fix(native): a proxy sign-in the address check never met loads in the app instead of the browser

A proxy that lets /api through (an Authelia or Authentik bypass for the app)
still sends the page itself to its sign-in. The app took that redirect for a
foreign link and handed it to the browser, so the sign-in happened there and
the app stayed black on every launch. A redirect away from the server while
its first page loads is now kept as the proxy's sign-in host, on Android and
iOS, and the iOS bridge guard is always in place for hosts learned that way.

.github/workflows/docker.yml

@@ -140,7 +140,9 @@ jobs:
           set -eu
 
           # Derive version from git tags, no package.json dependency
-          STABLE_TAG=$(git tag -l 'v[0-9]*.[0-9]*.[0-9]*' | grep -v '\-pre\.' | sort -V | tail -1)
+          # Only a plain vX.Y.Z is a release: the glob alone also matches the apps' TestFlight tags
+          # (v5.1.0-tf.15), whose suffix then broke the arithmetic below.
+          STABLE_TAG=$(git tag -l 'v[0-9]*.[0-9]*.[0-9]*' | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -1)
           STABLE="${STABLE_TAG#v}"
           STABLE="${STABLE:-0.0.0}"
 

.github/workflows/native.yml

@@ -17,6 +17,7 @@ on:
       - 'client/ios/**'
       - 'client/native-shell/**'
       - 'client/src/native/trekShell.ts'
+      - 'client/src/native/watch.ts'
       - 'client/src/native/serverAddress.ts'
       - 'client/capacitor.config.ts'
       - 'client/vite.native.config.js'
@@ -103,7 +104,7 @@ jobs:
           xcodebuild -version
 
       - name: Check the property lists
-        run: plutil -lint client/ios/App/App/Info.plist client/ios/ExportOptions.plist client/ios/App/NotificationService/Info.plist client/ios/App/NotificationService/NotificationService.entitlements client/ios/App/App/App.entitlements client/ios/App/TREKWidgets/Info.plist client/ios/App/TREKWidgets/TREKWidgets.entitlements client/ios/App/TREKWidgets/*.lproj/Localizable.strings
+        run: plutil -lint client/ios/App/App/Info.plist client/ios/ExportOptions.plist client/ios/App/NotificationService/Info.plist client/ios/App/NotificationService/NotificationService.entitlements client/ios/App/App/App.entitlements client/ios/App/TREKWidgets/Info.plist client/ios/App/TREKWidgets/TREKWidgets.entitlements client/ios/App/TREKWidgets/*.lproj/Localizable.strings client/ios/App/ShareExtension/Info.plist client/ios/App/ShareExtension/ShareExtension.entitlements client/ios/App/ShareExtension/*.lproj/Localizable.strings client/ios/App/TREKWatch/Info.plist client/ios/App/TREKWatch/TREKWatch.entitlements client/ios/App/TREKWatch/*.lproj/Localizable.strings client/ios/App/TREKWatchWidgets/Info.plist client/ios/App/TREKWatchWidgets/TREKWatchWidgets.entitlements
 
       - uses: actions/setup-node@v6
         with:
@@ -120,6 +121,23 @@ jobs:
         working-directory: client
         run: npm run cap:sync -- ios
 
+      # Capacitor's xcframeworks come from GitHub release downloads, which answer
+      # 504 now and then; SwiftPM then reports the half-written file as "already
+      # exists in file system". Resolve on a clean artifact cache, a few times
+      # with growing pauses, before the build needs the packages.
+      - name: Resolve the Swift packages
+        working-directory: client/ios/App
+        run: |
+          for attempt in 1 2 3 4 5; do
+            rm -rf ~/Library/Caches/org.swift.swiftpm/artifacts
+            if xcodebuild -resolvePackageDependencies -project App.xcodeproj -scheme App; then exit 0; fi
+            echo "Resolving the Swift packages failed (attempt $attempt of 5)"
+            sleep $((attempt * 30))
+          done
+          exit 1
+
+      # No -sdk: the scheme builds the embedded watch app and its complications
+      # against the watchOS simulator SDK and the rest against the iOS one.
       - name: Build for the simulator
         working-directory: client/ios/App
         run: |
@@ -127,14 +145,16 @@ jobs:
             -project App.xcodeproj \
             -scheme App \
             -configuration Debug \
-            -sdk iphonesimulator \
             -destination 'generic/platform=iOS Simulator' \
             CODE_SIGNING_ALLOWED=NO
 
   # The widgets drawn to PNGs (client/ios/WidgetPreviews): every size, light and
   # dark, for a trip ahead, a trip under way and none, plus a home screen and
   # a lock screen of them. Nobody has to install a build to see a widget change.
+  # Started by hand only (Run workflow): the apps are on TestFlight and Play now,
+  # where a change is looked at on a device; on every PR it only held the queue.
   widget-previews:
+    if: github.event_name == 'workflow_dispatch'
     runs-on: macos-15
     timeout-minutes: 20
     steps:
@@ -159,3 +179,99 @@ jobs:
           name: widget-previews
           path: client/ios/WidgetPreviews/out
           retention-days: 14
+
+  # The watch's half in the UI (client/src/native/watch.ts): the snapshot it
+  # builds and the ticks it takes back, typechecked and tested here as well,
+  # so a change to the bridge is checked next to the Swift that reads it.
+  watch-bridge:
+    runs-on: ubuntu-24.04
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version-file: .nvmrc
+          cache: npm
+
+      - name: Install
+        run: npm ci --workspace=shared --workspace=client
+
+      - name: Build shared
+        run: npm run build --workspace=shared
+
+      - name: Typecheck the client
+        working-directory: client
+        run: npm run typecheck
+
+      - name: Test the widget and watch snapshots
+        working-directory: client
+        run: npx vitest run src/native/watch.test.ts src/native/widgets.test.ts src/native/widgetExtras.test.ts
+
+  # The watch app on watchOS simulators in its screenshot mode (DemoMode.swift):
+  # every screen on the largest and the smallest watch, the main ones in every
+  # language, and the complications, as PNGs to look at without a watch.
+  # Started by hand only, like the widget previews: up to 90 minutes of macOS.
+  watch-screens:
+    if: github.event_name == 'workflow_dispatch'
+    runs-on: macos-15
+    timeout-minutes: 90
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Select Xcode 26
+        run: |
+          XCODE=$(ls -d /Applications/Xcode_26*.app | sort -V | tail -1)
+          test -n "$XCODE"
+          sudo xcode-select -s "$XCODE"
+
+      # The project resolves the Capacitor packages from node_modules, even for
+      # a target that uses none of them.
+      - uses: actions/setup-node@v6
+        with:
+          node-version-file: .nvmrc
+          cache: npm
+
+      - name: Install
+        run: npm ci --workspace=shared --workspace=client
+
+      - name: Make sure a watchOS simulator runtime is there
+        run: |
+          xcrun simctl list runtimes | grep -q watchOS || xcodebuild -downloadPlatform watchOS
+          xcrun simctl list runtimes
+
+      # Capacitor's xcframeworks come from GitHub release downloads, which answer
+      # 504 now and then; SwiftPM then reports the half-written file as "already
+      # exists in file system". Resolve on a clean artifact cache, a few times
+      # with growing pauses, before the build needs the packages.
+      - name: Resolve the Swift packages
+        working-directory: client/ios/App
+        run: |
+          for attempt in 1 2 3 4 5; do
+            rm -rf ~/Library/Caches/org.swift.swiftpm/artifacts
+            if xcodebuild -resolvePackageDependencies -project App.xcodeproj -scheme App; then exit 0; fi
+            echo "Resolving the Swift packages failed (attempt $attempt of 5)"
+            sleep $((attempt * 30))
+          done
+          exit 1
+
+      - name: Build the watch app for the simulator
+        working-directory: client/ios/App
+        run: |
+          xcodebuild build \
+            -project App.xcodeproj \
+            -target TREKWatch \
+            -configuration Debug \
+            -sdk watchsimulator \
+            SYMROOT="$PWD/build" \
+            CODE_SIGNING_ALLOWED=NO
+
+      - name: Capture the screens
+        run: bash client/ios/scripts/watch-screens.sh client/ios/App/build/Debug-watchsimulator/TREKWatch.app "$PWD/watch-screens"
+
+      - uses: actions/upload-artifact@v6
+        if: always()
+        with:
+          name: watch-screens
+          path: watch-screens
+          retention-days: 14

.github/workflows/test.yml

@@ -1236,10 +1236,12 @@ jobs:
           bin="$RUNNER_TEMP/bin"
           mkdir -p "$bin"
           cd "$RUNNER_TEMP"
-          curl -sSfLo helm.tgz "https://get.helm.sh/helm-$HELM_VERSION-linux-amd64.tar.gz"
+          # GitHub's release downloads answer 504 now and then: retry, the checksum still decides.
+          fetch() { curl -sSfL --retry 5 --retry-delay 15 --retry-all-errors -o "$1" "$2"; }
+          fetch helm.tgz "https://get.helm.sh/helm-$HELM_VERSION-linux-amd64.tar.gz"
           echo "$HELM_SHA256  helm.tgz" | sha256sum -c -
           tar -xzf helm.tgz --strip-components=1 -C "$bin" linux-amd64/helm
-          curl -sSfLo kubeconform.tgz "https://github.com/yannh/kubeconform/releases/download/$KUBECONFORM_VERSION/kubeconform-linux-amd64.tar.gz"
+          fetch kubeconform.tgz "https://github.com/yannh/kubeconform/releases/download/$KUBECONFORM_VERSION/kubeconform-linux-amd64.tar.gz"
           echo "$KUBECONFORM_SHA256  kubeconform.tgz" | sha256sum -c -
           tar -xzf kubeconform.tgz -C "$bin" kubeconform
           echo "$bin" >> "$GITHUB_PATH"

Dockerfile

@@ -70,7 +70,10 @@ COPY server/package.json ./server/
 # gypfile:false (npm/cli#9837). The only other install scripts among the runtime
 # deps are esbuild's binary check, redundant next to its optional platform
 # package, and a telemetry ping.
+# The upgrade takes the Debian security fixes the base image was built before
+# (zlib, 11/2026, failed the image scan until node:24-trixie-slim caught up).
 RUN apt-get update && \
+    apt-get upgrade -y --no-install-recommends && \
     apt-get install -y --no-install-recommends tzdata dumb-init wget ca-certificates \
     libkitinerary-bin libsqlite3-0 && \
     npm ci --workspace=server --omit=dev --ignore-scripts && \

charts/trek/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
 name: trek
-version: 5.1.0
+version: 5.1.2
 description: Minimal Helm chart for TREK app
-appVersion: "5.1.0"
+appVersion: "5.1.2"

charts/trek/templates/configmap.yaml

@@ -127,6 +127,9 @@ data:
   {{- if .Values.env.TREK_VALHALLA_URL }}
   TREK_VALHALLA_URL: {{ .Values.env.TREK_VALHALLA_URL | quote }}
   {{- end }}
+  {{- if .Values.env.TREK_WALLET_SIGNER_URL }}
+  TREK_WALLET_SIGNER_URL: {{ .Values.env.TREK_WALLET_SIGNER_URL | quote }}
+  {{- end }}
   {{- if .Values.env.GOOGLE_LIST_DATA_BASE }}
   GOOGLE_LIST_DATA_BASE: {{ .Values.env.GOOGLE_LIST_DATA_BASE | quote }}
   {{- end }}

charts/trek/values.yaml

@@ -159,6 +159,10 @@ env:
   # TREK_VALHALLA_URL: ""
   # The Valhalla of the TREK services, which this server relays routing to unless the admin picks another
   # routing service. The browser never talks to it. Defaults to https://valhalla.liketrek.com.
+  # TREK_WALLET_SIGNER_URL: ""
+  # Signs the Apple Wallet pass of a booking when someone taps "Add to Apple Wallet" in the iOS app.
+  # Only the pass's texts go there, once per tap. Never asked with TREK_SERVICES=off.
+  # Defaults to https://push.liketrek.com/v1/wallet/pass.
   # AMAP_API_BASE: ""
   # Send the Amap (高德地图) calls through an egress proxy, a cache or a gateway that speaks the same API instead of
   # restapi.amap.com directly. The key itself is a credential and goes under secretEnv.AMAP_API_KEY, or into

client/android/.gitignore

@@ -106,3 +106,6 @@ app/src/main/assets/public
 app/src/main/assets/capacitor.config.json
 app/src/main/assets/capacitor.plugins.json
 app/src/main/res/xml/config.xml
+
+# Kotlin compiler caches
+.kotlin/

client/android/app/build.gradle

@@ -1,4 +1,6 @@
 apply plugin: 'com.android.application'
+apply plugin: 'org.jetbrains.kotlin.android'
+apply plugin: 'org.jetbrains.kotlin.plugin.compose'
 
 android {
     namespace = "com.liketrek.trek"
@@ -32,6 +34,25 @@ android {
             }
         }
     }
+    // java.time in the widgets and the travel-day notification, back to Android 7.
+    compileOptions {
+        coreLibraryDesugaringEnabled true
+    }
+    buildFeatures {
+        compose = true
+        buildConfig = true
+    }
+    // The app's languages, for the system's per-app language setting (Android 13+):
+    // generated from the values-* folders, so a language added there is offered too.
+    androidResources {
+        generateLocaleConfig = true
+    }
+    testOptions {
+        unitTests {
+            includeAndroidResources = true
+            returnDefaultValues = true
+        }
+    }
     buildTypes {
         release {
             if (project.hasProperty('trekKeystore')) {
@@ -57,14 +78,39 @@ dependencies {
     implementation "androidx.core:core-splashscreen:$coreSplashScreenVersion"
     implementation "androidx.browser:browser:$androidxBrowserVersion"
     implementation "androidx.biometric:biometric:1.1.0"
+    implementation "androidx.core:core-ktx:$androidxCoreVersion"
+    coreLibraryDesugaring "com.android.tools:desugar_jdk_libs:2.1.5"
+    // Home-screen widgets.
+    implementation "androidx.glance:glance-appwidget:$glanceVersion"
+    implementation "androidx.glance:glance-material3:$glanceVersion"
+    // The share sheet and the widget's trip picker.
+    implementation platform("androidx.compose:compose-bom:$composeBomVersion")
+    implementation "androidx.compose.material3:material3"
+    implementation "androidx.compose.material:material-icons-extended"
+    implementation "androidx.compose.ui:ui-tooling-preview"
+    debugImplementation "androidx.compose.ui:ui-tooling"
+    implementation "androidx.activity:activity-compose:$androidxActivityVersion"
+    // A foldable's posture and hinge, and the window's size, for the UI.
+    implementation "androidx.window:window:1.4.0"
+    // Ranks the trip shortcuts in the share sheet on Android 10 and earlier.
+    implementation "androidx.sharetarget:sharetarget:1.2.0"
+    // TREK Cloud subscriptions through Google Play, the counterpart of StoreKit.
+    implementation "com.android.billingclient:billing:$playBillingVersion"
     // Push through liketrek's relay. No google-services plugin: Firebase reads
     // its project from res/values/firebase.xml, the strings the plugin would generate.
     implementation "com.google.firebase:firebase-messaging:24.1.2"
     implementation project(':capacitor-android')
     testImplementation "junit:junit:$junitVersion"
+    testImplementation "org.json:json:20250517"
     androidTestImplementation "androidx.test.ext:junit:$androidxJunitVersion"
     androidTestImplementation "androidx.test.espresso:espresso-core:$androidxEspressoCoreVersion"
     implementation project(':capacitor-cordova-android-plugins')
 }
 
 apply from: 'capacitor.build.gradle'
+
+kotlin {
+    compilerOptions {
+        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_21
+    }
+}

client/android/app/capacitor.build.gradle

@@ -9,7 +9,9 @@ android {
 
 apply from: "../capacitor-cordova-android-plugins/cordova.variables.gradle"
 dependencies {
+    implementation project(':capacitor-action-sheet')
     implementation project(':capacitor-app')
+    implementation project(':capacitor-dialog')
     implementation project(':capacitor-filesystem')
     implementation project(':capacitor-haptics')
     implementation project(':capacitor-keyboard')

client/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Debug builds only: the widget gallery (debug/WidgetGalleryActivity.kt). -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application>
+        <activity
+            android:name=".debug.WidgetGalleryActivity"
+            android:theme="@style/AppTheme.NoActionBar"
+            android:exported="true" />
+    </application>
+</manifest>

client/android/app/src/debug/java/com/liketrek/trek/debug/WidgetGalleryActivity.kt

@@ -0,0 +1,125 @@
+package com.liketrek.trek.debug
+
+import android.app.Activity
+import android.content.res.Configuration
+import android.graphics.Color
+import android.os.Bundle
+import android.util.TypedValue
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import android.widget.LinearLayout
+import android.widget.ScrollView
+import android.widget.TextView
+import androidx.glance.appwidget.ExperimentalGlanceRemoteViewsApi
+import androidx.glance.appwidget.GlanceRemoteViews
+import com.liketrek.trek.tripday.TripDayNotification
+import com.liketrek.trek.widget.AtlasWidget
+import com.liketrek.trek.widget.BookingsWidget
+import com.liketrek.trek.widget.CollabWidget
+import com.liketrek.trek.widget.PackingWidget
+import com.liketrek.trek.widget.TodayWidget
+import com.liketrek.trek.widget.TodosWidget
+import com.liketrek.trek.widget.TrekSizes
+import com.liketrek.trek.widget.TrekWidget
+import com.liketrek.trek.widget.TrekWidgetTheme
+import com.liketrek.trek.widget.TripWidget
+import com.liketrek.trek.widget.WidgetSamples
+import com.liketrek.trek.widget.WidgetStore
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+
+/**
+ * Debug builds only: every widget at every size, drawn by the real Glance code
+ * into real RemoteViews, so they can be looked at and screenshot without placing
+ * each on a home screen.
+ *
+ *   adb shell am start -n com.liketrek.trek/.debug.WidgetGalleryActivity --es widget trip --ez running true --ez dark false
+ *
+ * --es seed sample also writes the sample trip as the app's snapshot, so the
+ * placed widgets, the share sheet and the shortcuts have a trip to show; and
+ * --ez tripday true posts the travel day's Live Update from the sample.
+ */
+@OptIn(ExperimentalGlanceRemoteViewsApi::class)
+class WidgetGalleryActivity : Activity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val running = intent.getBooleanExtra("running", true)
+        val dark = intent.getBooleanExtra("dark", false)
+        val only = intent.getStringExtra("widget")
+        if (intent.getStringExtra("seed") == "sample") seed()
+        if (intent.getBooleanExtra("tripday", false)) {
+            TripDayNotification.show(
+                this,
+                TripDayNotification.State(
+                    "Autumn in Kyoto", "/trips/1", "Day 3 of 9", "Kiyomizu-dera", "13:30", 810, 2, 5,
+                    listOf("#D6273B", "#E8A13A", "#2FA37A", "#4A7DDB", "#8E6CD9"),
+                ),
+            )
+        }
+
+        val config = Configuration(resources.configuration).apply {
+            uiMode = (uiMode and Configuration.UI_MODE_NIGHT_MASK.inv()) or if (dark) Configuration.UI_MODE_NIGHT_YES else Configuration.UI_MODE_NIGHT_NO
+        }
+        val themed = createConfigurationContext(config)
+        val list = LinearLayout(this).apply {
+            orientation = LinearLayout.VERTICAL
+            setPadding(px(16), px(if (intent.getBooleanExtra("bare", false)) 96 else 32), px(16), px(32))
+            val bg = intent.getStringExtra("bg")
+            setBackgroundColor(if (bg != null) Color.parseColor("#$bg") else if (dark) Color.rgb(28, 27, 31) else Color.rgb(222, 226, 236))
+        }
+        setContentView(ScrollView(this).apply { addView(list) })
+
+        val widgets: List<Pair<String, TrekWidget>> = listOf(
+            "trip" to TripWidget(),
+            "today" to TodayWidget(),
+            "bookings" to BookingsWidget(),
+            "todos" to TodosWidget(),
+            "packing" to PackingWidget(),
+            "atlas" to AtlasWidget(),
+            "collab" to CollabWidget(),
+        ).filter { only == null || it.first == only }
+        // --ez store true draws what the app really wrote, instead of the sample trip.
+        val snapshot = if (intent.getBooleanExtra("store", false)) WidgetStore.load(this) else WidgetSamples.snapshot(running)
+        CoroutineScope(Dispatchers.Main).launch {
+            for ((name, widget) in widgets) {
+                if (!intent.getBooleanExtra("bare", false)) list.addView(TextView(this@WidgetGalleryActivity).apply {
+                    text = name
+                    setTextColor(if (dark) Color.WHITE else Color.DKGRAY)
+                    setPadding(0, px(12), 0, px(6))
+                })
+                val onlySize = intent.getStringExtra("size")
+                val sizes = listOf("small" to TrekSizes.SMALL, "wide" to TrekSizes.WIDE, "large" to TrekSizes.LARGE)
+                for ((sizeName, size) in sizes) {
+                    if (onlySize != null && onlySize != sizeName) continue
+                    val result = GlanceRemoteViews().compose(themed, size) {
+                        TrekWidgetTheme.Themed { widget.Content(snapshot) }
+                    }
+                    val host = FrameLayout(this@WidgetGalleryActivity)
+                    host.addView(result.remoteViews.apply(themed, host), FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT))
+                    list.addView(host, LinearLayout.LayoutParams(px(size.width.value), px(size.height.value)).apply { bottomMargin = px(12) })
+                }
+            }
+        }
+    }
+
+    private fun seed() {
+        WidgetStore.write(this, "snapshot", WidgetSamples.json(running = true))
+        WidgetStore.write(this, "trip.1", WidgetSamples.json(running = true))
+        WidgetStore.write(this, "trip.2", WidgetSamples.json(running = false).replace("Autumn in Kyoto", "Lisbon long weekend"))
+        WidgetStore.write(
+            this,
+            "trips",
+            """[{"id":1,"title":"Autumn in Kyoto","start":"${java.time.LocalDate.now().minusDays(2)}","end":"${java.time.LocalDate.now().plusDays(6)}"},
+               {"id":2,"title":"Lisbon long weekend","start":"${java.time.LocalDate.now().plusDays(12)}","end":"${java.time.LocalDate.now().plusDays(15)}"},
+               {"id":3,"title":"Norway by train","start":"2026-06-02","end":"2026-06-12"}]""",
+        )
+        com.liketrek.trek.widget.TrekWidgetUpdater.refreshAll(this)
+        com.liketrek.trek.share.TrekShortcuts.publish(this)
+    }
+
+    private fun px(dp: Float): Int = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, resources.displayMetrics).toInt()
+
+    private fun px(dp: Int): Int = px(dp.toFloat())
+
+}

client/android/app/src/main/AndroidManifest.xml

@@ -9,31 +9,33 @@
         android:networkSecurityConfig="@xml/network_security_config"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
+        android:enableOnBackInvokedCallback="true"
+        android:resizeableActivity="true"
         android:theme="@style/AppTheme">
 
+        <!-- Every window shape a tablet, a foldable, ChromeOS or desktop windowing
+             offers. The UI lays itself out by the window's size (hooks/sizeClass.ts),
+             so the activity takes size, fold and orientation changes itself
+             (configChanges) instead of restarting and losing the page. -->
+        <meta-data android:name="android.supports_size_changes" android:value="true" />
+
         <activity
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode|navigation|density"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|smallestScreenSize|screenLayout|uiMode|navigation|density|fontScale|touchscreen|colorMode|fontWeightAdjustment"
             android:name=".MainActivity"
             android:label="@string/title_activity_main"
             android:theme="@style/AppTheme.NoActionBarLaunch"
             android:launchMode="singleTask"
+            android:screenOrientation="fullUser"
+            android:windowSoftInputMode="adjustResize"
             android:exported="true">
 
+            <!-- The trips as launcher and direct-share shortcuts (TrekShortcuts). -->
+            <meta-data android:name="android.app.shortcuts" android:resource="@xml/shortcuts" />
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
-            <!-- "Open in TREK" / share a booking document into the import. -->
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW" />
-                <action android:name="android.intent.action.SEND" />
-                <category android:name="android.intent.category.DEFAULT" />
-                <data android:mimeType="application/pdf" />
-                <data android:mimeType="text/calendar" />
-                <data android:mimeType="application/vnd.apple.pkpass" />
-                <data android:mimeType="message/rfc822" />
-            </intent-filter>
-
             <!-- Deep links.
 
                  The scheme is @string/custom_url_scheme (com.liketrek.trek).
@@ -60,6 +62,122 @@
 
         </activity>
 
+        <!-- "TREK" in the share sheet and "Open with TREK": a booking document, a
+             mail, a page or a link, into a trip (share/ShareActivity.kt). -->
+        <activity
+            android:name=".share.ShareActivity"
+            android:theme="@style/AppTheme.Sheet"
+            android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|keyboard|keyboardHidden|navigation"
+            android:excludeFromRecents="true"
+            android:taskAffinity="com.liketrek.trek.share"
+            android:launchMode="standard"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="application/pdf" />
+                <data android:mimeType="application/vnd.apple.pkpass" />
+                <data android:mimeType="message/rfc822" />
+                <data android:mimeType="text/calendar" />
+                <data android:mimeType="text/html" />
+                <data android:mimeType="text/plain" />
+                <data android:mimeType="image/*" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND_MULTIPLE" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="application/pdf" />
+                <data android:mimeType="image/*" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <!-- content:// only: a file:// path would be read with TREK's own rights. -->
+                <data android:scheme="content" />
+                <data android:mimeType="application/pdf" />
+                <data android:mimeType="text/calendar" />
+                <data android:mimeType="application/vnd.apple.pkpass" />
+                <data android:mimeType="message/rfc822" />
+            </intent-filter>
+            <!-- Lets the share sheet rank the trip shortcuts for this target. -->
+            <meta-data android:name="android.service.chooser.chooser_target_service" android:value="androidx.sharetarget.ChooserTargetServiceCompat" />
+        </activity>
+
+        <!-- "Choose trip" for a placed widget. -->
+        <activity
+            android:name=".widget.WidgetConfigActivity"
+            android:theme="@style/AppTheme.Native"
+            android:excludeFromRecents="true"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+            </intent-filter>
+        </activity>
+
+        <!-- The home-screen widgets (widget/TrekWidgets.kt). -->
+        <receiver
+            android:name=".widget.TripWidgetReceiver"
+            android:label="@string/widget_trip_name"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_trip" />
+        </receiver>
+        <receiver
+            android:name=".widget.TodayWidgetReceiver"
+            android:label="@string/widget_today_name"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_today" />
+        </receiver>
+        <receiver
+            android:name=".widget.BookingsWidgetReceiver"
+            android:label="@string/widget_bookings_name"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_bookings" />
+        </receiver>
+        <receiver
+            android:name=".widget.TodosWidgetReceiver"
+            android:label="@string/widget_todos_name"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_todos" />
+        </receiver>
+        <receiver
+            android:name=".widget.PackingWidgetReceiver"
+            android:label="@string/widget_packing_name"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_packing" />
+        </receiver>
+        <receiver
+            android:name=".widget.AtlasWidgetReceiver"
+            android:label="@string/widget_atlas_name"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_atlas" />
+        </receiver>
+        <receiver
+            android:name=".widget.CollabWidgetReceiver"
+            android:label="@string/widget_collab_name"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_collab" />
+        </receiver>
         <!-- Push: the relay's data messages, decrypted and shown here. -->
         <service
             android:name=".TrekPushService"
@@ -97,5 +215,10 @@
     <uses-permission android:name="android.permission.CAMERA" />
     <!-- Android 13 and later ask before an app may show notifications. -->
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <!-- Android 16: the travel day's Live Update may be promoted to the top of the shade. -->
+    <uses-permission android:name="android.permission.POST_PROMOTED_NOTIFICATIONS" />
     <uses-feature android:name="android.hardware.camera" android:required="false" />
+    <!-- Tablets, Chromebooks and TVs without these still get the app on Play. -->
+    <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
+    <uses-feature android:name="android.hardware.screen.portrait" android:required="false" />
 </manifest>

client/android/app/src/main/java/com/liketrek/trek/MainActivity.java

@@ -2,14 +2,25 @@ package com.liketrek.trek;
 
 import android.content.Intent;
 import android.os.Bundle;
+import android.view.KeyEvent;
+import android.view.KeyboardShortcutGroup;
+import android.view.Menu;
 import android.view.View;
 import com.getcapacitor.BridgeActivity;
+import com.liketrek.trek.screen.TrekKeyCommands;
+import com.liketrek.trek.tiles.TrekTileStore;
+import com.liketrek.trek.widget.TrekWidgetUpdater;
+import java.util.List;
 
 public class MainActivity extends BridgeActivity {
 
+    /** The share sheet (share/ShareActivity.kt) left an item for the import. */
+    public static final String ACTION_SHARE_HANDOFF = "com.liketrek.trek.SHARE_HANDOFF";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         registerPlugin(TrekShellPlugin.class);
+        TrekTileStore.INSTANCE.init(this);
         // With a server picked, the WebView loads that server instead of the
         // bundled address screen, so the UI arrives in the version the server
         // runs and on its own origin. BridgeActivity reads `config` while it
@@ -25,8 +36,28 @@ public class MainActivity extends BridgeActivity {
         // scroller natively. It scales the whole view, top bar and bottom dock included.
         bridge.getWebView().setOverScrollMode(View.OVER_SCROLL_NEVER);
         // Set before any WebView callback can run: they are posted to this thread.
-        if (onServer) bridge.setWebViewClient(new TrekWebViewClient(bridge, this::showAddressScreen));
+        if (onServer) bridge.setWebViewClient(new TrekWebViewClient(bridge, this::showAddressScreen, TrekServerStore.getSignInHosts(this)));
         TrekSharedFiles.receive(this, getIntent());
+        // Android 15's widget picker draws the widgets live from a sample trip.
+        TrekWidgetUpdater.publishPreviews(this);
+    }
+
+    /**
+     * A hardware keyboard's shortcut runs the UI's command (TrekKeyCommands),
+     * wherever the focus is; everything else goes on to the WebView as usual.
+     */
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        if (TrekKeyCommands.INSTANCE.dispatch(event)) return true;
+        return super.dispatchKeyEvent(event);
+    }
+
+    /** The UI's shortcuts in the system's list (Meta + /), under their names. */
+    @Override
+    public void onProvideKeyboardShortcuts(List<KeyboardShortcutGroup> data, Menu menu, int deviceId) {
+        super.onProvideKeyboardShortcuts(data, menu, deviceId);
+        KeyboardShortcutGroup group = TrekKeyCommands.INSTANCE.shortcutGroup(getString(R.string.app_name));
+        if (group != null) data.add(group);
     }
 
     @Override

client/android/app/src/main/java/com/liketrek/trek/SignInRedirect.java

@@ -0,0 +1,57 @@
+package com.liketrek.trek;
+
+import java.net.URI;
+import java.util.Locale;
+
+/**
+ * A sign-in page in front of the server that the address screen never saw.
+ * A proxy can let the app's check through (an Authelia or Authentik rule that
+ * bypasses /api) and still send the page itself to its sign-in. Handed to the
+ * browser, that sign-in leaves its session there and the app stays blank on
+ * every launch. So a redirect away from the server, while the server's first
+ * page is still loading, is taken as the proxy's sign-in: it loads in the web
+ * view and its host is kept, the way the address screen keeps the ones it saw.
+ * A link the user follows is no redirect, and once a page of the server has
+ * shown, nothing is learned any more.
+ */
+final class SignInRedirect {
+
+    private SignInRedirect() {}
+
+    /** The host (host:port with an explicit port) to keep as a sign-in host, or null. */
+    static String learnedHost(String server, String target, boolean mainFrame, boolean redirect, boolean serverShown) {
+        if (!mainFrame || !redirect || serverShown || server == null || target == null) return null;
+        URI from;
+        URI to;
+        try {
+            from = new URI(server);
+            to = new URI(target);
+        } catch (Exception e) {
+            return null;
+        }
+        String fromHost = lower(from.getHost());
+        String toHost = lower(to.getHost());
+        String toScheme = lower(to.getScheme());
+        if (fromHost == null || toHost == null) return null;
+        if (!"https".equals(toScheme) && !"http".equals(toScheme)) return null;
+        // Never from https down to plain http: the sign-in would send a password in the clear.
+        if ("https".equals(lower(from.getScheme())) && !"https".equals(toScheme)) return null;
+        if (toHost.equals(fromHost)) return null;
+        return to.getPort() == -1 ? toHost : toHost + ":" + to.getPort();
+    }
+
+    /** Whether `url` is on the server's host, where the app's own pages come from. */
+    static boolean onServer(String server, String url) {
+        if (server == null || url == null) return false;
+        try {
+            String serverHost = lower(new URI(server).getHost());
+            return serverHost != null && serverHost.equals(lower(new URI(url).getHost()));
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    private static String lower(String value) {
+        return value == null ? null : value.toLowerCase(Locale.ROOT);
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/TrekPushService.java

@@ -37,6 +37,7 @@ public class TrekPushService extends FirebaseMessagingService {
         String body = getString(R.string.push_fallback_body);
         String url = null;
         String tag = null;
+        String event = null;
         try {
             TrekPushKeys keys = TrekPushKeys.load(this);
             if (keys != null) {
@@ -46,30 +47,74 @@ public class TrekPushService extends FirebaseMessagingService {
                 body = payload.optString("body", body);
                 url = payload.optString("url", null);
                 tag = payload.optString("tag", null);
+                event = payload.optString("event", null);
             }
         } catch (Exception unreadable) {
             // Shown with the neutral text: the tap still opens the app.
         }
-        show(this, title, body, url, tag);
+        show(this, title, body, url, tag, event);
     }
 
     /** A new token means a new endpoint; the UI re-registers on its next start (resyncPushSubscription). */
     @Override
     public void onNewToken(@NonNull String token) {}
 
+    /** The channels, so each kind can be silenced, raised or kept on its own in the system settings. */
+    static final String CHANNEL_CHAT = "chat";
+    static final String CHANNEL_TRIPS = "trips";
+    static final String CHANNEL_INVITES = "invites";
+
+    /**
+     * The channel of a notification by the event the server names (PushPayload.event,
+     * notification-events.ts). A server too old to send one lands in the general channel.
+     */
+    static String channelFor(String event) {
+        if (event == null) return CHANNEL;
+        switch (event) {
+            case "collab_message":
+                return CHANNEL_CHAT;
+            case "booking_change":
+            case "trip_reminder":
+            case "todo_due":
+            case "packing_tagged":
+                return CHANNEL_TRIPS;
+            case "trip_invite":
+            case "vacay_invite":
+            case "vacay_share":
+            case "collection_invite":
+            case "photos_shared":
+                return CHANNEL_INVITES;
+            default:
+                return CHANNEL;
+        }
+    }
+
     static void ensureChannel(Context context) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return;
         NotificationManager manager = context.getSystemService(NotificationManager.class);
-        if (manager == null || manager.getNotificationChannel(CHANNEL) != null) return;
-        NotificationChannel channel = new NotificationChannel(
-            CHANNEL,
-            context.getString(R.string.push_channel_name),
-            NotificationManager.IMPORTANCE_DEFAULT
-        );
-        manager.createNotificationChannel(channel);
+        if (manager == null) return;
+        create(manager, CHANNEL_CHAT, context.getString(R.string.push_channel_chat), NotificationManager.IMPORTANCE_HIGH);
+        create(manager, CHANNEL_TRIPS, context.getString(R.string.push_channel_trips), NotificationManager.IMPORTANCE_DEFAULT);
+        create(manager, CHANNEL_INVITES, context.getString(R.string.push_channel_invites), NotificationManager.IMPORTANCE_DEFAULT);
+        create(manager, CHANNEL, context.getString(R.string.push_channel_name), NotificationManager.IMPORTANCE_DEFAULT);
+        com.liketrek.trek.tripday.TripDayNotification.INSTANCE.ensureChannel(context);
     }
 
-    private static void show(Context context, String title, String body, String url, String tag) {
+    @androidx.annotation.RequiresApi(Build.VERSION_CODES.O)
+    private static void create(NotificationManager manager, String id, String name, int importance) {
+        NotificationChannel existing = manager.getNotificationChannel(id);
+        if (existing != null) {
+            // Only the name follows the app's language; what the user set stays theirs.
+            if (!name.contentEquals(existing.getName())) {
+                existing.setName(name);
+                manager.createNotificationChannel(existing);
+            }
+            return;
+        }
+        manager.createNotificationChannel(new NotificationChannel(id, name, importance));
+    }
+
+    private static void show(Context context, String title, String body, String url, String tag, String event) {
         ensureChannel(context);
         Intent open = new Intent(context, MainActivity.class)
             .setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
@@ -81,12 +126,17 @@ public class TrekPushService extends FirebaseMessagingService {
             open,
             PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE
         );
-        NotificationCompat.Builder builder = new NotificationCompat.Builder(context, CHANNEL)
+        String channel = channelFor(event);
+        NotificationCompat.Builder builder = new NotificationCompat.Builder(context, channel)
             .setSmallIcon(R.drawable.ic_stat_trek)
             .setContentTitle(title)
             .setContentText(body)
             .setStyle(new NotificationCompat.BigTextStyle().bigText(body))
             .setAutoCancel(true)
+            .setColor(ContextCompat.getColor(context, R.color.notification_accent))
+            .setCategory(CHANNEL_CHAT.equals(channel) ? NotificationCompat.CATEGORY_MESSAGE : NotificationCompat.CATEGORY_EVENT)
+            // One stack per kind in the shade, rather than a loose pile.
+            .setGroup("trek." + channel)
             .setContentIntent(tap);
         if (Build.VERSION.SDK_INT >= 33
             && ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED) {
@@ -94,6 +144,15 @@ public class TrekPushService extends FirebaseMessagingService {
         }
         try {
             NotificationManagerCompat.from(context).notify(tag, id, builder.build());
+            // The stack's head: the system folds the group under it from two notifications on.
+            NotificationCompat.Builder summary = new NotificationCompat.Builder(context, channel)
+                .setSmallIcon(R.drawable.ic_stat_trek)
+                .setColor(ContextCompat.getColor(context, R.color.notification_accent))
+                .setGroup("trek." + channel)
+                .setGroupSummary(true)
+                .setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_CHILDREN)
+                .setAutoCancel(true);
+            NotificationManagerCompat.from(context).notify("trek.summary", channel.hashCode(), summary.build());
         } catch (SecurityException notAllowed) {
             // Notifications switched off for the app since it subscribed.
         }

client/android/app/src/main/java/com/liketrek/trek/TrekServerStore.java

@@ -10,6 +10,10 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -18,26 +22,80 @@ final class TrekServerStore {
 
     private static final String PREFS = "trek_shell";
     private static final String KEY_URL = "server_url";
+    private static final String KEY_SIGN_IN_HOSTS = "sign_in_hosts";
     private static final String KEY_SHELL_ONCE = "shell_once";
     private static final String KEY_RESTART = "restart";
+    private static final String KEY_WELCOME = "welcome";
     private static final String CONFIG_DIR = "trek-server-config";
 
     private TrekServerStore() {}
 
+    /**
+     * The one-time code of a TREK Cloud purchase (setServer's `welcome`). The
+     * server's first page opens its welcome page with it once, which signs the
+     * buyer in (TrekWebViewClient). Kept only until the restart has loaded.
+     */
+    static void setWelcome(Context context, String code) {
+        SharedPreferences.Editor editor = prefs(context).edit();
+        if (code == null) editor.remove(KEY_WELCOME);
+        else editor.putString(KEY_WELCOME, code);
+        editor.commit();
+    }
+
+    /** The welcome page for the pending code, handed out once; null when there is none. */
+    static String takeWelcomeUrl(Context context) {
+        String code = prefs(context).getString(KEY_WELCOME, null);
+        String server = getUrl(context);
+        if (code == null) return null;
+        prefs(context).edit().remove(KEY_WELCOME).commit();
+        if (server == null) return null;
+        return (server.endsWith("/") ? server : server + "/") + "api/managed/welcome#" + code;
+    }
+
     static String getUrl(Context context) {
         return prefs(context).getString(KEY_URL, null);
     }
 
+    /** Remembers the server; its sign-in hosts go with it and are replaced or dropped too. */
     static void setUrl(Context context, String url) {
+        setServer(context, url, null);
+    }
+
+    static void setServer(Context context, String url, Set<String> signInHosts) {
         SharedPreferences.Editor editor = prefs(context).edit();
         if (url == null) {
             editor.remove(KEY_URL);
         } else {
             editor.putString(KEY_URL, url);
         }
+        if (signInHosts == null || signInHosts.isEmpty()) {
+            editor.remove(KEY_SIGN_IN_HOSTS);
+        } else {
+            Set<String> lower = new HashSet<>();
+            for (String host : signInHosts) lower.add(host.toLowerCase(Locale.ROOT));
+            editor.putStringSet(KEY_SIGN_IN_HOSTS, lower);
+        }
         editor.commit();
     }
 
+    /**
+     * The hosts of a sign-in page that stands in front of the server (a proxy
+     * such as Cloudflare Access or Pangolin), as the address screen found them.
+     * Only these may load inside the web view besides the server itself, so
+     * the proxy's session lands where the app can use it (TrekWebViewClient).
+     */
+    static Set<String> getSignInHosts(Context context) {
+        Set<String> hosts = prefs(context).getStringSet(KEY_SIGN_IN_HOSTS, null);
+        return hosts == null ? Collections.emptySet() : Collections.unmodifiableSet(new HashSet<>(hosts));
+    }
+
+    /** Keeps one more sign-in host for the remembered server, as the web view met it (SignInRedirect). */
+    static void addSignInHost(Context context, String host) {
+        Set<String> hosts = new HashSet<>(getSignInHosts(context));
+        if (!hosts.add(host.toLowerCase(Locale.ROOT))) return;
+        prefs(context).edit().putStringSet(KEY_SIGN_IN_HOSTS, hosts).commit();
+    }
+
     /** Start the next launch on the bundled address screen, even with a server remembered. */
     static void showShellOnce(Context context) {
         prefs(context).edit().putBoolean(KEY_SHELL_ONCE, true).commit();

client/android/app/src/main/java/com/liketrek/trek/TrekSharedFiles.java

@@ -39,10 +39,19 @@ final class TrekSharedFiles {
 
     static void receive(Context context, Intent intent) {
         if (intent == null) return;
+        if (MainActivity.ACTION_SHARE_HANDOFF.equals(intent.getAction())) {
+            receiveHandoff(context);
+            return;
+        }
         Uri uri = null;
-        if (Intent.ACTION_VIEW.equals(intent.getAction())) uri = intent.getData();
+        // A view intent also brings sign-in callbacks and widget links; only a file is a document.
+        if (Intent.ACTION_VIEW.equals(intent.getAction()) && intent.getData() != null
+            && "content".equals(intent.getData().getScheme())) {
+            uri = intent.getData();
+        }
         else if (Intent.ACTION_SEND.equals(intent.getAction())) uri = intent.getParcelableExtra(Intent.EXTRA_STREAM);
-        if (uri == null) return;
+        // content:// only: a file:// path would be read with TREK's own rights.
+        if (uri == null || !"content".equals(uri.getScheme())) return;
         try (InputStream in = context.getContentResolver().openInputStream(uri)) {
             if (in == null) return;
             ByteArrayOutputStream out = new ByteArrayOutputStream();
@@ -64,6 +73,26 @@ final class TrekSharedFiles {
         }
     }
 
+    /** The item the share sheet left (share/ShareHandoff.kt), with the trip picked for it there. */
+    static void receiveHandoff(Context context) {
+        kotlin.Pair<org.json.JSONObject, byte[]> item = com.liketrek.trek.share.ShareHandoff.INSTANCE.take(context);
+        if (item == null || item.getSecond().length > MAX_BYTES) return;
+        org.json.JSONObject meta = item.getFirst();
+        JSObject file = new JSObject();
+        file.put("name", meta.optString("name", "booking"));
+        file.put("mimeType", meta.optString("mimeType", "application/octet-stream"));
+        file.put("data", Base64.encodeToString(item.getSecond(), Base64.NO_WRAP));
+        if (meta.has("tripId")) file.put("tripId", meta.optLong("tripId"));
+        // A page or a link: where it came from, so the UI can keep it among the trip's links.
+        String url = meta.optString("url", "");
+        if (url.startsWith("https://") || url.startsWith("http://")) {
+            file.put("url", url);
+            file.put("title", meta.optString("title", url));
+        }
+        pending = file;
+        if (listener != null) listener.onFile(file);
+    }
+
     private static String displayName(Context context, Uri uri) {
         try (Cursor cursor = context.getContentResolver().query(uri, new String[] { OpenableColumns.DISPLAY_NAME }, null, null, null)) {
             if (cursor != null && cursor.moveToFirst()) return cursor.getString(0);

client/android/app/src/main/java/com/liketrek/trek/TrekShellPlugin.java

@@ -6,26 +6,39 @@ import android.net.Uri;
 import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
+import android.util.Log;
+import androidx.activity.result.ActivityResult;
+import com.liketrek.trek.clientcert.ClientCertActions;
+import com.liketrek.trek.clientcert.TrekClientIdentity;
 import androidx.browser.customtabs.CustomTabsIntent;
 import androidx.core.app.NotificationManagerCompat;
+import com.getcapacitor.JSArray;
 import com.getcapacitor.JSObject;
 import com.getcapacitor.PermissionState;
 import com.getcapacitor.Plugin;
 import com.getcapacitor.PluginCall;
 import com.getcapacitor.PluginMethod;
+import com.getcapacitor.annotation.ActivityCallback;
 import com.getcapacitor.annotation.CapacitorPlugin;
 import com.getcapacitor.annotation.Permission;
 import com.getcapacitor.annotation.PermissionCallback;
 import com.google.firebase.messaging.FirebaseMessaging;
+import java.util.HashSet;
+import java.util.Set;
 import org.json.JSONObject;
 
 /** The native half of client/src/native/trekShell.ts. */
 @CapacitorPlugin(
     name = "TrekShell",
-    permissions = { @Permission(strings = { Manifest.permission.POST_NOTIFICATIONS }, alias = "notifications") }
+    permissions = {
+        @Permission(strings = { Manifest.permission.POST_NOTIFICATIONS }, alias = "notifications"),
+        @Permission(strings = { Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION }, alias = "location"),
+    }
 )
 public class TrekShellPlugin extends Plugin {
 
+    private static final String TAG = "TrekShell";
+
     /** How long to wait after returning from the browser for the redirect to land. */
     private static final long CANCEL_GRACE_MS = 600;
 
@@ -41,7 +54,23 @@ public class TrekShellPlugin extends Plugin {
      */
     static final int SHELL_API = 2;
     /** The native features by name, so the UI can turn each on by itself. */
-    static final String[] FEATURES = { "capabilities", "biometricLock", "sharedFiles", "nativePush" };
+    static final String[] FEATURES = {
+        "capabilities",
+        "biometricLock",
+        "sharedFiles",
+        "nativePush",
+        "geolocation",
+        "tileCache",
+        "widgets",
+        "widgetTrips",
+        "liveActivity",
+        "shareSheet",
+        "playBilling",
+        "googleWallet",
+        "keyCommands",
+        "windowLayout",
+        "clientCertificate",
+    };
 
     /** liketrek's push relay: the endpoint for this device's FCM token (trek-hosted push-relay.ts). */
     static final String PUSH_RELAY = "https://push.liketrek.com/v1/fcm/";
@@ -76,6 +105,26 @@ public class TrekShellPlugin extends Plugin {
     @Override
     public void load() {
         TrekSharedFiles.setListener(file -> notifyListeners("sharedFile", file));
+        // A reloaded page starts without a stream; whatever the old one ran is stopped.
+        if (location != null) location.stop();
+        locationActive = false;
+        // A pending purchase that cleared while the shell runs: redeemed like a restore.
+        com.liketrek.trek.billing.TrekBilling.INSTANCE.setOnTransaction(receipt -> {
+            notifyListeners("storeTransaction", receipt);
+            return kotlin.Unit.INSTANCE;
+        });
+        com.liketrek.trek.screen.TrekKeyCommands.INSTANCE.setOnPress(id -> {
+            JSObject pressed = new JSObject();
+            pressed.put("id", id);
+            notifyListeners("keyCommand", pressed);
+            return kotlin.Unit.INSTANCE;
+        });
+        if (getActivity() != null) {
+            com.liketrek.trek.screen.TrekWindowLayout.INSTANCE.observe(getActivity(), layout -> {
+                notifyListeners("windowLayout", layout);
+                return kotlin.Unit.INSTANCE;
+            });
+        }
         if (getActivity() != null && getActivity().getIntent() != null) {
             openedPushUrl = getActivity().getIntent().getStringExtra(TrekPushService.EXTRA_URL);
             getActivity().getIntent().removeExtra(TrekPushService.EXTRA_URL);
@@ -234,11 +283,26 @@ public class TrekShellPlugin extends Plugin {
             call.reject("A http(s) URL is required");
             return;
         }
-        TrekServerStore.setUrl(getContext(), url);
+        TrekServerStore.setServer(getContext(), url, signInHostsOf(call));
+        // A TREK Cloud purchase: the code that signs the buyer in, opened once after the first page.
+        String welcome = call.getString("welcome");
+        TrekServerStore.setWelcome(getContext(), welcome != null && welcome.matches("[A-Za-z0-9_-]{43}") ? welcome : null);
         call.resolve();
         restart();
     }
 
+    /** The sign-in hosts the address screen passes along, plain host names only. */
+    private static Set<String> signInHostsOf(PluginCall call) {
+        Set<String> hosts = new HashSet<>();
+        JSArray list = call.getArray("signInHosts");
+        if (list == null) return hosts;
+        for (int i = 0; i < list.length(); i++) {
+            String host = list.optString(i, "");
+            if (host.matches("[A-Za-z0-9.-]+(:[0-9]+)?")) hosts.add(host);
+        }
+        return hosts;
+    }
+
     @PluginMethod
     public void resetServer(PluginCall call) {
         TrekServerStore.setUrl(getContext(), null);
@@ -254,6 +318,8 @@ public class TrekShellPlugin extends Plugin {
 
     /** The server URL is part of the bridge's configuration, so it takes a new activity. */
     private void restart() {
+        locationActive = false;
+        if (location != null) location.stop();
         TrekServerStore.markRestart(getContext());
         getActivity().runOnUiThread(() -> getActivity().recreate());
     }
@@ -275,7 +341,32 @@ public class TrekShellPlugin extends Plugin {
         // A Custom Tab shares the browser's cookies, so a running SSO session at
         // the identity provider carries over. The redirect back to the app's
         // scheme arrives through the intent-filter in AndroidManifest.xml.
-        new CustomTabsIntent.Builder().build().launchUrl(getActivity(), Uri.parse(url));
+        Uri target = Uri.parse(url);
+        getActivity().runOnUiThread(() -> openSignIn(target));
+    }
+
+    /**
+     * Opens the sign-in in a Custom Tab, or in the browser itself where no
+     * Custom Tab can come up. Launched on the UI thread: some devices dropped a
+     * launch from the bridge's thread without a word, and the sign-in then
+     * looked cancelled. A browser that cannot open at all is reported as such.
+     */
+    private void openSignIn(Uri target) {
+        try {
+            new CustomTabsIntent.Builder().build().launchUrl(getActivity(), target);
+            return;
+        } catch (RuntimeException tabFailed) {
+            Log.w(TAG, "No Custom Tab for the sign-in, trying the browser", tabFailed);
+        }
+        try {
+            getActivity().startActivity(new Intent(Intent.ACTION_VIEW, target).addCategory(Intent.CATEGORY_BROWSABLE));
+        } catch (RuntimeException browserFailed) {
+            Log.w(TAG, "No browser for the sign-in", browserFailed);
+            PluginCall call = pendingAuthCall();
+            if (call == null) return;
+            call.reject("No browser could open the sign-in", "NO_BROWSER");
+            finishAuth(call);
+        }
     }
 
     @Override
@@ -306,6 +397,7 @@ public class TrekShellPlugin extends Plugin {
     @Override
     protected void handleOnResume() {
         super.handleOnResume();
+        if (locationActive && location != null && locationAllowed()) location.start(locationHighAccuracy);
         if (!authBrowserOpen) return;
         authBrowserOpen = false;
         handler.postDelayed(() -> {
@@ -348,4 +440,370 @@ public class TrekShellPlugin extends Plugin {
         result.put("opened", false);
         call.resolve(result);
     }
+
+    // ---- Widgets, shortcuts and the travel day ----
+
+    /**
+     * What the home-screen widgets show (native/widgets.ts), as JSON: "snapshot"
+     * (the dashboard's), "trip.<id>" or "trips" (the list a widget and the share
+     * sheet pick from). The widgets redraw, and a new trip list rebuilds the
+     * trip shortcuts.
+     */
+    @PluginMethod
+    public void setWidgetSnapshot(PluginCall call) {
+        String json = call.getString("json");
+        String key = call.getString("key", "snapshot");
+        if (json == null) {
+            call.reject("json is required");
+            return;
+        }
+        if (!com.liketrek.trek.widget.WidgetStore.INSTANCE.isValidKey(key)) {
+            call.reject("key must be snapshot, trips or trip.<id>");
+            return;
+        }
+        android.content.Context context = getContext().getApplicationContext();
+        try {
+            com.liketrek.trek.widget.WidgetStore.INSTANCE.write(context, key, json);
+        } catch (Exception e) {
+            call.reject("Could not store the widget snapshot", e);
+            return;
+        }
+        if ("trips".equals(key)) {
+            new Thread(() -> com.liketrek.trek.share.TrekShortcuts.INSTANCE.publish(context)).start();
+        } else {
+            com.liketrek.trek.widget.TrekWidgetUpdater.refreshAll(context);
+        }
+        call.resolve();
+    }
+
+    /** Starts the travel day's Live Update, or updates the one showing. */
+    @PluginMethod
+    public void syncTripDay(PluginCall call) {
+        String title = call.getString("tripTitle");
+        String path = call.getString("path");
+        String dayLabel = call.getString("dayLabel");
+        String nextName = call.getString("nextName");
+        if (title == null || path == null || dayLabel == null || nextName == null) {
+            call.reject("tripTitle, path, dayLabel and nextName are required");
+            return;
+        }
+        java.util.List<String> colors = new java.util.ArrayList<>();
+        com.getcapacitor.JSArray raw = call.getArray("colors");
+        if (raw != null) {
+            for (int i = 0; i < raw.length(); i++) colors.add(raw.isNull(i) ? null : raw.optString(i, null));
+        }
+        com.liketrek.trek.tripday.TripDayNotification.State state = new com.liketrek.trek.tripday.TripDayNotification.State(
+            title,
+            path,
+            dayLabel,
+            nextName,
+            call.getString("nextTime"),
+            call.getInt("nextMinutes"),
+            call.getInt("done", 0),
+            call.getInt("total", 0),
+            colors
+        );
+        boolean running = com.liketrek.trek.tripday.TripDayNotification.INSTANCE.show(getContext(), state);
+        JSObject result = new JSObject();
+        result.put("running", running);
+        call.resolve(result);
+    }
+
+    @PluginMethod
+    public void endTripDay(PluginCall call) {
+        com.liketrek.trek.tripday.TripDayNotification.INSTANCE.end(getContext());
+        call.resolve();
+    }
+
+    // ---- Location ----
+
+    private com.liketrek.trek.location.TrekLocation location;
+    private boolean locationHighAccuracy;
+
+    private com.liketrek.trek.location.TrekLocation location() {
+        if (location == null) {
+            location = new com.liketrek.trek.location.TrekLocation(getContext(), payload -> {
+                notifyListeners("location", payload);
+                return kotlin.Unit.INSTANCE;
+            });
+        }
+        return location;
+    }
+
+    /** Whether the app may know where the device is: precisely, or "Approximate" only. */
+    private boolean locationAllowed() {
+        return androidx.core.content.ContextCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION)
+                == android.content.pm.PackageManager.PERMISSION_GRANTED
+            || androidx.core.content.ContextCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION)
+                == android.content.pm.PackageManager.PERMISSION_GRANTED;
+    }
+
+    /** True while the UI has a stream running, so it resumes after the app was in the background. */
+    private boolean locationActive;
+
+    /**
+     * One location stream for the UI's navigator.geolocation, asking for the
+     * permission the first time. "Approximate" counts as allowed; the stream then
+     * runs on the coarse fixes Android gives.
+     */
+    @PluginMethod
+    public void startLocation(PluginCall call) {
+        locationHighAccuracy = Boolean.TRUE.equals(call.getBoolean("highAccuracy", false));
+        if (!locationAllowed()) {
+            requestPermissionForAlias("location", call, "locationPermissionAnswered");
+            return;
+        }
+        locationActive = true;
+        location().start(locationHighAccuracy);
+        call.resolve();
+    }
+
+    @PermissionCallback
+    private void locationPermissionAnswered(PluginCall call) {
+        if (!locationAllowed()) {
+            location().emitError(1, "Location permission denied");
+        } else {
+            locationActive = true;
+            location().start(locationHighAccuracy);
+        }
+        call.resolve();
+    }
+
+    @PluginMethod
+    public void stopLocation(PluginCall call) {
+        locationActive = false;
+        if (location != null) location.stop();
+        call.resolve();
+    }
+
+    /** No location in the background, as in a browser: paused with the app, resumed with it. */
+    @Override
+    protected void handleOnPause() {
+        super.handleOnPause();
+        if (location != null) location.stop();
+    }
+
+    /** The page and the activity are gone: nothing can stop the stream any more but this. */
+    @Override
+    protected void handleOnDestroy() {
+        locationActive = false;
+        if (location != null) location.stop();
+        super.handleOnDestroy();
+    }
+
+    // ---- Map tile store ----
+
+    @PluginMethod
+    public void getTileCacheUsage(PluginCall call) {
+        new Thread(() -> {
+            JSObject result = new JSObject();
+            result.put("bytes", com.liketrek.trek.tiles.TrekTileStore.INSTANCE.usage());
+            result.put("limit", com.liketrek.trek.tiles.TrekTileStore.MAX_BYTES);
+            call.resolve(result);
+        }).start();
+    }
+
+    @PluginMethod
+    public void clearTileCache(PluginCall call) {
+        new Thread(() -> {
+            com.liketrek.trek.tiles.TrekTileStore.INSTANCE.clear();
+            call.resolve();
+        }).start();
+    }
+
+    // ---- Google Play Billing (the StoreKit methods' Android side) ----
+
+    @PluginMethod
+    public void storeProducts(PluginCall call) {
+        com.liketrek.trek.billing.TrekBilling.INSTANCE.products(getContext(), call);
+    }
+
+    @PluginMethod
+    public void storePurchase(PluginCall call) {
+        com.liketrek.trek.billing.TrekBilling.INSTANCE.purchase(getActivity(), call);
+    }
+
+    @PluginMethod
+    public void storeFinish(PluginCall call) {
+        com.liketrek.trek.billing.TrekBilling.INSTANCE.finish(getContext(), call);
+    }
+
+    @PluginMethod
+    public void storeRestore(PluginCall call) {
+        com.liketrek.trek.billing.TrekBilling.INSTANCE.restore(getContext(), call);
+    }
+
+    /** A paid subscription never delivered (it cleared while the app was closed), for the shell to redeem. */
+    @PluginMethod
+    public void storeUnfinished(PluginCall call) {
+        com.liketrek.trek.billing.TrekBilling.INSTANCE.unfinished(getContext(), call);
+    }
+
+    // ---- Google Wallet ----
+
+    /** The only links this hands on: Google Wallet's save-to-wallet page. */
+    static final String GOOGLE_WALLET_SAVE = "https://pay.google.com/gp/v/save/";
+
+    /**
+     * Feature googleWallet: a booking's pass, by the save link the TREK services
+     * signed, into Google Wallet. The Wallet app takes the link where it is
+     * installed, the browser otherwise.
+     */
+    @PluginMethod
+    public void addToGoogleWallet(PluginCall call) {
+        String url = call.getString("url");
+        if (url == null || !url.startsWith(GOOGLE_WALLET_SAVE)) {
+            call.reject("not a Google Wallet save link", "INVALID");
+            return;
+        }
+        try {
+            getActivity().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)).addCategory(Intent.CATEGORY_BROWSABLE));
+            JSObject result = new JSObject();
+            result.put("result", "opened");
+            call.resolve(result);
+        } catch (android.content.ActivityNotFoundException e) {
+            call.reject("Nothing can open Google Wallet", "UNAVAILABLE");
+        }
+    }
+
+    // ---- Large screens and keyboards ----
+
+    /** Feature keyCommands: the UI's keyboard shortcuts for the screen it shows. */
+    @PluginMethod
+    public void setKeyCommands(PluginCall call) {
+        com.liketrek.trek.screen.TrekKeyCommands.INSTANCE.set(call.getArray("commands"));
+        call.resolve();
+    }
+
+    /** Feature windowLayout: the window's size classes and a foldable's posture and hinge. */
+    @PluginMethod
+    public void getWindowLayout(PluginCall call) {
+        // The last layout WindowManager reported, posture and hinge included; the bare window before the first.
+        getActivity().runOnUiThread(() -> call.resolve(com.liketrek.trek.screen.TrekWindowLayout.INSTANCE.current(getActivity())));
+    }
+
+    // ---- Client certificates (mutual TLS) ----
+
+    /**
+     * The address screen's check of a server, made natively so it notices
+     * whether the server asks for a client certificate and can show the stored
+     * one (clientcert/ClientCertActions.request).
+     */
+    @PluginMethod
+    public void requestServer(PluginCall call) {
+        String url = call.getString("url");
+        Uri parsed = url == null ? null : Uri.parse(url);
+        if (parsed == null || parsed.getHost() == null || !("https".equals(parsed.getScheme()) || "http".equals(parsed.getScheme()))) {
+            call.reject("A http(s) URL is required");
+            return;
+        }
+        int timeout = Math.max(1000, Math.min(call.getInt("timeoutMs", 10000), 30000));
+        new Thread(() -> {
+            try {
+                call.resolve(ClientCertActions.request(getContext(), url, timeout));
+            } catch (Exception e) {
+                call.reject(e.getMessage() == null ? "request failed" : e.getMessage());
+            }
+        }, "trek-request-server").start();
+    }
+
+    /** The stored certificate's details, or none. */
+    @PluginMethod
+    public void clientCertificate(PluginCall call) {
+        TrekClientIdentity.Info info = TrekClientIdentity.info(getContext());
+        JSObject result = new JSObject();
+        result.put("certificate", info == null ? JSONObject.NULL : ClientCertActions.infoObject(info));
+        TrekClientIdentity.Request asked = TrekClientIdentity.INSTANCE.getLastRequest();
+        if (asked != null) {
+            JSObject request = new JSObject();
+            request.put("host", asked.getHost());
+            request.put("port", asked.getPort());
+            request.put("served", asked.getServed());
+            result.put("request", request);
+        }
+        call.resolve(result);
+    }
+
+    @PluginMethod
+    public void removeClientCertificate(PluginCall call) {
+        TrekClientIdentity.remove(getContext());
+        forgetCertificateAnswers();
+        call.resolve();
+    }
+
+    /** The WebView keeps its answer to a certificate request per host; a changed certificate needs a fresh one. */
+    private void forgetCertificateAnswers() {
+        com.liketrek.trek.clientcert.ClientCertWatch.reset();
+        getActivity().runOnUiThread(() -> android.webkit.WebView.clearClientCertPreferences(null));
+    }
+
+    /**
+     * Picks a .p12/.pfx file, asks for its password until it opens or the user
+     * gives up, and keeps it for the server at host and port. Resolves with
+     * result "imported" (and the certificate), "cancelled", or "failed" and why.
+     */
+    @PluginMethod
+    public void importClientCertificate(PluginCall call) {
+        String host = call.getString("host");
+        if (host == null || !host.matches("[A-Za-z0-9.-]+")) {
+            call.reject("A host is required");
+            return;
+        }
+        Intent pick = new Intent(Intent.ACTION_OPEN_DOCUMENT).addCategory(Intent.CATEGORY_OPENABLE).setType("*/*");
+        pick.putExtra(Intent.EXTRA_MIME_TYPES, new String[] { "application/x-pkcs12", "application/pkcs12", "application/octet-stream" });
+        startActivityForResult(call, pick, "clientCertificatePicked");
+    }
+
+    @ActivityCallback
+    private void clientCertificatePicked(PluginCall call, ActivityResult picked) {
+        if (call == null) return;
+        Uri uri = picked.getData() == null ? null : picked.getData().getData();
+        if (picked.getResultCode() != android.app.Activity.RESULT_OK || uri == null) {
+            resolveImport(call, "cancelled", null);
+            return;
+        }
+        new Thread(() -> {
+            byte[] bytes = ClientCertActions.readFile(getContext(), uri);
+            if (bytes == null) resolveImport(call, "failed", TrekClientIdentity.Failure.FORMAT.name());
+            else askPasswordFor(call, bytes, false);
+        }, "trek-client-cert").start();
+    }
+
+    private void askPasswordFor(PluginCall call, byte[] bytes, boolean wrong) {
+        JSObject labels = call.getObject("labels", new JSObject());
+        ClientCertActions.askPassword(getActivity(), labels, wrong, password -> {
+            if (password == null) {
+                resolveImport(call, "cancelled", null);
+                return kotlin.Unit.INSTANCE;
+            }
+            new Thread(() -> openWith(call, bytes, password), "trek-client-cert").start();
+            return kotlin.Unit.INSTANCE;
+        });
+    }
+
+    private void openWith(PluginCall call, byte[] bytes, char[] password) {
+        try {
+            TrekClientIdentity.Identity identity = TrekClientIdentity.read(bytes, password);
+            TrekClientIdentity.save(getContext(), identity, call.getString("host"), call.getInt("port", 443));
+            forgetCertificateAnswers();
+            resolveImport(call, "imported", null);
+        } catch (TrekClientIdentity.ImportException e) {
+            if (e.getReason() == TrekClientIdentity.Failure.PASSWORD) askPasswordFor(call, bytes, true);
+            else resolveImport(call, "failed", e.getReason().name());
+        } catch (Exception e) {
+            Log.w(TAG, "client certificate not kept", e);
+            resolveImport(call, "failed", "STORE");
+        } finally {
+            java.util.Arrays.fill(password, '\0');
+        }
+    }
+
+    private void resolveImport(PluginCall call, String result, String failure) {
+        JSObject out = new JSObject();
+        out.put("result", result);
+        if (failure != null) out.put("failure", failure.toLowerCase(java.util.Locale.ROOT));
+        TrekClientIdentity.Info info = TrekClientIdentity.info(getContext());
+        if ("imported".equals(result) && info != null) out.put("certificate", ClientCertActions.infoObject(info));
+        call.resolve(out);
+    }
 }

client/android/app/src/main/java/com/liketrek/trek/TrekWebViewClient.java

@@ -1,11 +1,17 @@
 package com.liketrek.trek;
 
+import android.net.Uri;
+import android.webkit.ClientCertRequest;
 import android.webkit.WebResourceError;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebResourceResponse;
 import android.webkit.WebView;
 import com.getcapacitor.Bridge;
 import com.getcapacitor.BridgeWebViewClient;
+import com.liketrek.trek.clientcert.TrekClientIdentity;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
 
 /**
  * Used while the WebView shows the user's server. When that server cannot be
@@ -18,10 +24,90 @@ import com.getcapacitor.BridgeWebViewClient;
 class TrekWebViewClient extends BridgeWebViewClient {
 
     private final Runnable onUnreachable;
+    private final Set<String> signInHosts;
+    /** A page of the server has shown since launch; from then on no sign-in host is learned (SignInRedirect). */
+    private boolean serverShown;
 
-    TrekWebViewClient(Bridge bridge, Runnable onUnreachable) {
+    TrekWebViewClient(Bridge bridge, Runnable onUnreachable, Set<String> signInHosts) {
         super(bridge);
         this.onUnreachable = onUnreachable;
+        this.signInHosts = new HashSet<>(signInHosts);
+    }
+
+    /**
+     * The sign-in page of a proxy in front of the server loads here rather than
+     * in the browser, so its session cookie is the web view's and every request
+     * of the app carries it, as in a browser. Only the hosts the address screen
+     * saw that proxy send it to (TrekServerStore.getSignInHosts), and only as a
+     * page: Capacitor injects its bridge into the server's origin alone, so the
+     * proxy's page gets no access to the app. Everything else goes on to
+     * Capacitor, which opens a foreign page in the browser.
+     */
+    @Override
+    public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
+        if (request.isForMainFrame() && isSignInHost(request.getUrl())) return false;
+        String learned = SignInRedirect.learnedHost(
+            TrekServerStore.getUrl(view.getContext()),
+            request.getUrl().toString(),
+            request.isForMainFrame(),
+            request.isRedirect(),
+            serverShown
+        );
+        if (learned != null) {
+            signInHosts.add(learned);
+            TrekServerStore.addSignInHost(view.getContext(), learned);
+            return false;
+        }
+        return super.shouldOverrideUrlLoading(view, request);
+    }
+
+    /** After the server's first page, a pending welcome code opens the welcome page once (TrekServerStore.takeWelcomeUrl). */
+    @Override
+    public void onPageFinished(WebView view, String url) {
+        super.onPageFinished(view, url);
+        if (SignInRedirect.onServer(TrekServerStore.getUrl(view.getContext()), url)) serverShown = true;
+        String welcome = TrekServerStore.takeWelcomeUrl(view.getContext());
+        if (welcome != null) view.loadUrl(welcome);
+    }
+
+    private boolean isSignInHost(Uri url) {
+        String scheme = url.getScheme();
+        String host = url.getHost();
+        if (host == null || !("https".equals(scheme) || "http".equals(scheme))) return false;
+        String key = host.toLowerCase(Locale.ROOT);
+        return signInHosts.contains(key) || (url.getPort() != -1 && signInHosts.contains(key + ":" + url.getPort()));
+    }
+
+    /** Mapbox's map resources go through the app's own store (tiles/TrekTileStore.kt). */
+    @Override
+    public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
+        if (com.liketrek.trek.tiles.TrekTileStore.INSTANCE.handles(request)) {
+            WebResourceResponse stored = com.liketrek.trek.tiles.TrekTileStore.INSTANCE.serve(request);
+            if (stored != null) return stored;
+        }
+        return super.shouldInterceptRequest(view, request);
+    }
+
+    /**
+     * A proxy in front of the server asks for a client certificate (mutual TLS).
+     * The stored one goes only to the host and port it was imported for; every
+     * other site that asks is told there is none, as a browser without a
+     * matching certificate would. The WebView remembers either answer for the
+     * host until the app restarts, which a new certificate always brings along.
+     */
+    @Override
+    public void onReceivedClientCertRequest(WebView view, ClientCertRequest request) {
+        TrekClientIdentity.Identity identity = TrekClientIdentity.identityFor(view.getContext(), request.getHost(), request.getPort());
+        TrekClientIdentity.noteRequest(request.getHost(), request.getPort(), identity != null);
+        if (identity != null) request.proceed(identity.getKey(), identity.getChain());
+        else request.ignore();
+        // The page may still come from the service worker's cache while every
+        // request fails: check natively whether the server lets the app in.
+        String server = TrekServerStore.getUrl(view.getContext());
+        Uri serverUri = server == null ? null : Uri.parse(server);
+        if (serverUri != null && TrekClientIdentity.matches(String.valueOf(serverUri.getHost()), serverUri.getPort() > 0 ? serverUri.getPort() : 443, request.getHost(), request.getPort())) {
+            com.liketrek.trek.clientcert.ClientCertWatch.serverAsked(view.getContext(), server, onUnreachable);
+        }
     }
 
     @Override
@@ -36,14 +122,22 @@ class TrekWebViewClient extends BridgeWebViewClient {
     /**
      * Only a 5xx on the page itself means the server is down (a proxy's 502 or
      * 503 while TREK restarts). A 4xx page is left alone: the server answered,
-     * and TREK serves its UI for every other path.
+     * and TREK serves its UI for every other path. The exception is a proxy
+     * that asked this page for a client certificate and got none, as Cloudflare
+     * does with a 403: the address screen then says so and offers to add one.
      */
     @Override
     public void onReceivedHttpError(WebView view, WebResourceRequest request, WebResourceResponse errorResponse) {
+        int status = errorResponse.getStatusCode();
         if (!request.isForMainFrame()) {
             super.onReceivedHttpError(view, request, errorResponse);
-        } else if (errorResponse.getStatusCode() >= 500) {
+        } else if (status >= 500 || (status >= 400 && wantedCertificate(request.getUrl()))) {
             onUnreachable.run();
         }
     }
+
+    private static boolean wantedCertificate(Uri url) {
+        TrekClientIdentity.Request asked = TrekClientIdentity.INSTANCE.getLastRequest();
+        return asked != null && !asked.getServed() && TrekClientIdentity.matches(asked.getHost(), asked.getPort(), url.getHost(), url.getPort());
+    }
 }

client/android/app/src/main/java/com/liketrek/trek/billing/TrekBilling.kt

@@ -0,0 +1,254 @@
+package com.liketrek.trek.billing
+
+import android.app.Activity
+import android.content.Context
+import com.android.billingclient.api.AcknowledgePurchaseParams
+import com.android.billingclient.api.BillingClient
+import com.android.billingclient.api.BillingClientStateListener
+import com.android.billingclient.api.BillingFlowParams
+import com.android.billingclient.api.BillingResult
+import com.android.billingclient.api.PendingPurchasesParams
+import com.android.billingclient.api.ProductDetails
+import com.android.billingclient.api.Purchase
+import com.android.billingclient.api.PurchasesUpdatedListener
+import com.android.billingclient.api.QueryProductDetailsParams
+import com.android.billingclient.api.QueryPurchasesParams
+import com.getcapacitor.JSArray
+import com.getcapacitor.JSObject
+import com.getcapacitor.PluginCall
+import com.liketrek.trek.BuildConfig
+
+/**
+ * TREK Cloud subscriptions through Google Play Billing, the counterpart of the
+ * iOS app's StoreKit 2 (TrekShellPlugin.swift, feature storeKit). The UI drives
+ * it through the same TrekShell methods (storeProducts, storePurchase,
+ * storeFinish, storeRestore) behind native/iap.ts's IapClient, so the shell's
+ * plan screens work unchanged; a purchase's token is the receipt the control
+ * plane verifies with Google (iap-google.ts in trek-hosted).
+ *
+ * Products are subscriptions with the ids `cloud.<plan>.monthly|yearly`, one base
+ * plan each. A purchase stays unacknowledged until storeFinish, after the
+ * instance exists, so a purchase whose redeem never happened is offered again
+ * by a restore rather than lost (Play refunds what is not acknowledged within
+ * three days, and the control plane acknowledges too once it has verified).
+ */
+object TrekBilling {
+    private var client: BillingClient? = null
+    private var pendingPurchase: PluginCall? = null
+    private var pendingProduct: String? = null
+    private val waiting = mutableListOf<(Boolean) -> Unit>()
+    private var connecting = false
+
+    private val listener = PurchasesUpdatedListener { result, purchases -> onPurchasesUpdated(result, purchases) }
+
+    /**
+     * Told of a purchase that went through outside a purchase sheet: a payment
+     * that was pending (cash, some carrier billing) and cleared later. The shell
+     * redeems it like a restore (the "storeTransaction" event), since Play refunds
+     * what is not acknowledged within three days.
+     */
+    var onTransaction: ((JSObject) -> Unit)? = null
+
+    private fun client(context: Context): BillingClient = client ?: BillingClient.newBuilder(context.applicationContext)
+        .setListener(listener)
+        .enablePendingPurchases(PendingPurchasesParams.newBuilder().enableOneTimeProducts().enablePrepaidPlans().build())
+        .enableAutoServiceReconnection()
+        .build()
+        .also { client = it }
+
+    /** Runs [then] once connected; false when Play is not there (no Play Store, a sideloaded device). */
+    private fun ready(context: Context, then: (Boolean) -> Unit) {
+        val billing = client(context)
+        if (billing.isReady) return then(true)
+        synchronized(waiting) {
+            waiting += then
+            if (connecting) return
+            connecting = true
+        }
+        billing.startConnection(object : BillingClientStateListener {
+            override fun onBillingSetupFinished(result: BillingResult) = flush(result.responseCode == BillingClient.BillingResponseCode.OK)
+
+            override fun onBillingServiceDisconnected() = flush(false)
+        })
+    }
+
+    private fun flush(ok: Boolean) {
+        val callbacks = synchronized(waiting) {
+            connecting = false
+            waiting.toList().also { waiting.clear() }
+        }
+        callbacks.forEach { it(ok) }
+    }
+
+    private fun details(context: Context, ids: List<String>, done: (List<ProductDetails>) -> Unit) {
+        if (ids.isEmpty()) return done(emptyList())
+        val params = QueryProductDetailsParams.newBuilder()
+            .setProductList(ids.map { QueryProductDetailsParams.Product.newBuilder().setProductId(it).setProductType(BillingClient.ProductType.SUBS).build() })
+            .build()
+        client(context).queryProductDetailsAsync(params) { result, found ->
+            done(if (result.responseCode == BillingClient.BillingResponseCode.OK) found.productDetailsList else emptyList())
+        }
+    }
+
+    /** The recurring price of a subscription's base plan, as Play formats it for the buyer. */
+    internal fun displayPrice(product: ProductDetails): String? {
+        val offer = baseOffer(product) ?: return null
+        return offer.pricingPhases.pricingPhaseList.lastOrNull()?.formattedPrice
+    }
+
+    /** The base plan's own offer: the one without an offer id (free trials and promotions carry one). */
+    private fun baseOffer(product: ProductDetails): ProductDetails.SubscriptionOfferDetails? {
+        val offers = product.subscriptionOfferDetails ?: return null
+        return offers.firstOrNull { it.offerId == null } ?: offers.firstOrNull()
+    }
+
+    fun products(context: Context, call: PluginCall) {
+        val ids = call.getArray("ids")?.toList<String>().orEmpty()
+        ready(context) { ok ->
+            val result = JSObject().put("sandbox", BuildConfig.DEBUG)
+            if (!ok) return@ready call.resolve(result.put("products", JSArray()))
+            details(context, ids) { found ->
+                val list = JSArray()
+                for (product in found) displayPrice(product)?.let { list.put(JSObject().put("id", product.productId).put("displayPrice", it)) }
+                call.resolve(result.put("products", list))
+            }
+        }
+    }
+
+    fun purchase(activity: Activity, call: PluginCall) {
+        val id = call.getString("productId") ?: return call.reject("productId is required")
+        ready(activity) { ok ->
+            if (!ok) return@ready call.resolve(JSObject().put("kind", "failed"))
+            details(activity, listOf(id)) { found ->
+                val product = found.firstOrNull()
+                val offer = product?.let(::baseOffer)
+                if (product == null || offer == null) return@details call.resolve(JSObject().put("kind", "failed"))
+                pendingPurchase?.resolve(JSObject().put("kind", "cancelled"))
+                pendingPurchase = call
+                pendingProduct = id
+                val params = BillingFlowParams.newBuilder()
+                    .setProductDetailsParamsList(
+                        listOf(BillingFlowParams.ProductDetailsParams.newBuilder().setProductDetails(product).setOfferToken(offer.offerToken).build()),
+                    )
+                    .build()
+                activity.runOnUiThread {
+                    val launch = client(activity).launchBillingFlow(activity, params)
+                    if (launch.responseCode != BillingClient.BillingResponseCode.OK) {
+                        settle(if (launch.responseCode == BillingClient.BillingResponseCode.USER_CANCELED) "cancelled" else "failed", null)
+                    }
+                }
+            }
+        }
+    }
+
+    private fun onPurchasesUpdated(result: BillingResult, purchases: List<Purchase>?) {
+        if (pendingPurchase == null) {
+            // No sheet waiting: a pending purchase that cleared, or a renewal. Only an
+            // undelivered one matters; renewals are acknowledged already.
+            if (result.responseCode == BillingClient.BillingResponseCode.OK) {
+                undelivered(purchases.orEmpty(), PREFIX)?.let { onTransaction?.invoke(receipt(it)) }
+            }
+            return
+        }
+        when (result.responseCode) {
+            BillingClient.BillingResponseCode.OK -> {
+                val purchase = purchases?.firstOrNull { pendingProduct in it.products } ?: purchases?.firstOrNull()
+                when (purchase?.purchaseState) {
+                    Purchase.PurchaseState.PURCHASED -> settle("bought", purchase)
+                    Purchase.PurchaseState.PENDING -> settle("pending", null)
+                    else -> settle("failed", null)
+                }
+            }
+            BillingClient.BillingResponseCode.USER_CANCELED -> settle("cancelled", null)
+            // Already subscribed on this Google account (a reinstall, another phone, a
+            // redeem that never happened): that subscription is the purchase, and the
+            // shell redeems it as it would a new one.
+            BillingClient.BillingResponseCode.ITEM_ALREADY_OWNED -> settleOwned()
+            else -> settle("failed", null)
+        }
+    }
+
+    private fun settleOwned() {
+        val call = pendingPurchase ?: return
+        val params = QueryPurchasesParams.newBuilder().setProductType(BillingClient.ProductType.SUBS).build()
+        client?.queryPurchasesAsync(params) { result, purchases ->
+            val owned = if (result.responseCode == BillingClient.BillingResponseCode.OK) newest(purchases, PREFIX) else null
+            if (pendingPurchase !== call) return@queryPurchasesAsync
+            settle(if (owned != null) "bought" else "failed", owned)
+        } ?: settle("failed", null)
+    }
+
+    private fun receipt(purchase: Purchase): JSObject = JSObject()
+        .put("purchaseToken", purchase.purchaseToken)
+        .put("transactionId", purchase.purchaseToken)
+        .put("productId", purchase.products.firstOrNull { it.startsWith(PREFIX) } ?: purchase.products.firstOrNull())
+
+    private fun settle(kind: String, purchase: Purchase?) {
+        val call = pendingPurchase ?: return
+        pendingPurchase = null
+        val product = pendingProduct
+        pendingProduct = null
+        val out = JSObject().put("kind", kind)
+        if (purchase != null) {
+            out.put("purchaseToken", purchase.purchaseToken)
+            out.put("transactionId", purchase.purchaseToken)
+            out.put("productId", purchase.products.firstOrNull() ?: product)
+            purchase.orderId?.let { out.put("orderId", it) }
+        }
+        call.resolve(out)
+    }
+
+    /** Marks the purchase delivered, once its instance exists: acknowledged with Play. */
+    fun finish(context: Context, call: PluginCall) {
+        val token = call.getString("transactionId") ?: return call.reject("transactionId is required")
+        ready(context) { ok ->
+            if (!ok) return@ready call.resolve()
+            val params = AcknowledgePurchaseParams.newBuilder().setPurchaseToken(token).build()
+            client(context).acknowledgePurchase(params) { call.resolve() }
+        }
+    }
+
+    /** The newest active subscription under `prefix` on this Google account, if any. */
+    fun restore(context: Context, call: PluginCall) {
+        val prefix = call.getString("prefix") ?: "cloud."
+        ready(context) { ok ->
+            if (!ok) return@ready call.resolve(JSObject())
+            val params = QueryPurchasesParams.newBuilder().setProductType(BillingClient.ProductType.SUBS).build()
+            client(context).queryPurchasesAsync(params) { result, purchases ->
+                val found = if (result.responseCode == BillingClient.BillingResponseCode.OK) newest(purchases, prefix) else null
+                if (found == null) return@queryPurchasesAsync call.resolve(JSObject())
+                call.resolve(
+                    JSObject()
+                        .put("purchaseToken", found.purchaseToken)
+                        .put("transactionId", found.purchaseToken)
+                        .put("productId", found.products.first { it.startsWith(prefix) }),
+                )
+            }
+        }
+    }
+
+    /**
+     * A paid cloud purchase that was never delivered (not acknowledged), for the
+     * shell to redeem at its start: one that cleared while the app was closed.
+     */
+    fun unfinished(context: Context, call: PluginCall) {
+        val prefix = call.getString("prefix") ?: PREFIX
+        ready(context) { ok ->
+            if (!ok) return@ready call.resolve(JSObject())
+            val params = QueryPurchasesParams.newBuilder().setProductType(BillingClient.ProductType.SUBS).build()
+            client(context).queryPurchasesAsync(params) { result, purchases ->
+                val found = if (result.responseCode == BillingClient.BillingResponseCode.OK) undelivered(purchases, prefix) else null
+                call.resolve(found?.let(::receipt) ?: JSObject())
+            }
+        }
+    }
+
+    internal fun undelivered(purchases: List<Purchase>, prefix: String): Purchase? =
+        newest(purchases.filter { !it.isAcknowledged }, prefix)
+
+    private const val PREFIX = "cloud."
+
+    internal fun newest(purchases: List<Purchase>, prefix: String): Purchase? = purchases
+        .filter { p -> p.purchaseState == Purchase.PurchaseState.PURCHASED && p.products.any { it.startsWith(prefix) } }
+        .maxByOrNull { it.purchaseTime }
+}

client/android/app/src/main/java/com/liketrek/trek/clientcert/ClientCertActions.kt

@@ -0,0 +1,151 @@
+package com.liketrek.trek.clientcert
+
+import android.app.Activity
+import android.app.AlertDialog
+import android.content.Context
+import android.net.Uri
+import android.text.InputType
+import android.view.ViewGroup
+import android.widget.EditText
+import android.widget.FrameLayout
+import com.getcapacitor.JSObject
+import java.io.ByteArrayOutputStream
+import java.io.IOException
+import java.io.InputStream
+import java.net.HttpURLConnection
+import java.net.URL
+import javax.net.ssl.HttpsURLConnection
+
+/**
+ * What TrekShellPlugin does for client certificates (TrekClientIdentity):
+ * check a server while noticing whether it asks for one, read a picked file,
+ * and ask for its password.
+ */
+object ClientCertActions {
+
+    private const val MAX_BODY_BYTES = 512 * 1024
+    private const val MAX_FILE_BYTES = 256 * 1024
+    private const val MAX_REDIRECTS = 5
+
+    /**
+     * A GET against the user's server for the address screen: status, body, final
+     * URL and headers, plus whether the server asked for a client certificate and
+     * whether one was shown. A failed connection answers status 0 instead of
+     * throwing, so a handshake the server broke off for want of a certificate
+     * still reports that it asked.
+     */
+    @JvmStatic
+    fun request(context: Context, url: String, timeoutMs: Int): JSObject {
+        var asked: Triple<String, Int, Boolean>? = null
+        val factory = TrekClientIdentity.socketFactory(context) { host, port, served -> asked = Triple(host, port, served) }
+        val result = JSObject()
+        var current = URL(url)
+        try {
+            for (hop in 0..MAX_REDIRECTS) {
+                val connection = current.openConnection() as HttpURLConnection
+                if (connection is HttpsURLConnection) connection.sslSocketFactory = factory
+                connection.instanceFollowRedirects = false
+                connection.connectTimeout = timeoutMs
+                connection.readTimeout = timeoutMs
+                connection.setRequestProperty("Accept", "application/json, text/html;q=0.9, */*;q=0.8")
+                try {
+                    val status = connection.responseCode
+                    val location = connection.getHeaderField("Location")
+                    if (status in 300..399 && location != null && hop < MAX_REDIRECTS) {
+                        current = URL(current, location)
+                        continue
+                    }
+                    val stream = if (status >= 400) connection.errorStream else connection.inputStream
+                    result.put("status", status)
+                    result.put("data", stream?.use { readCapped(it, MAX_BODY_BYTES) }?.toString(Charsets.UTF_8) ?: "")
+                    result.put("url", current.toString())
+                    val headers = JSObject()
+                    for ((name, values) in connection.headerFields) if (name != null && values.isNotEmpty()) headers.put(name, values.first())
+                    result.put("headers", headers)
+                } finally {
+                    connection.disconnect()
+                }
+                break
+            }
+        } catch (e: IOException) {
+            result.put("status", 0)
+            result.put("data", "")
+            result.put("url", current.toString())
+            result.put("error", e.javaClass.simpleName)
+        }
+        val seen = asked
+        result.put("certRequested", seen != null)
+        result.put("certSent", seen?.third == true)
+        if (seen != null) result.put("certHost", "${seen.first}:${seen.second}")
+        return result
+    }
+
+    /** The bytes of a picked file, or null when it cannot be read or is far too big for a certificate. */
+    @JvmStatic
+    fun readFile(context: Context, uri: Uri): ByteArray? = try {
+        context.contentResolver.openInputStream(uri)?.use { readCapped(it, MAX_FILE_BYTES + 1) }?.takeIf { it.size <= MAX_FILE_BYTES }
+    } catch (e: Exception) {
+        null
+    }
+
+    /**
+     * The password prompt, with the UI's own words (`labels`: title, message,
+     * placeholder, ok, cancel, wrongPassword). `wrong` shows that the last try
+     * did not open the file. `done` gets the password, or null when cancelled.
+     */
+    @JvmStatic
+    fun askPassword(activity: Activity, labels: JSObject, wrong: Boolean, done: (CharArray?) -> Unit) {
+        activity.runOnUiThread {
+            val input = EditText(activity).apply {
+                inputType = InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_PASSWORD
+                hint = labels.getString("placeholder") ?: ""
+            }
+            val frame = FrameLayout(activity).apply {
+                val pad = (20 * activity.resources.displayMetrics.density).toInt()
+                setPadding(pad, pad / 2, pad, 0)
+                addView(input, FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT))
+            }
+            val message = if (wrong) labels.getString("wrongPassword") else labels.getString("message")
+            var answered = false
+            val dialog = AlertDialog.Builder(activity)
+                .setTitle(labels.getString("title"))
+                .setMessage(message)
+                .setView(frame)
+                .setPositiveButton(labels.getString("ok") ?: "OK") { _, _ ->
+                    answered = true
+                    val text = input.text
+                    val password = CharArray(text.length) { text[it] }
+                    done(password)
+                }
+                .setNegativeButton(labels.getString("cancel") ?: "Cancel") { _, _ ->
+                    answered = true
+                    done(null)
+                }
+                .setOnDismissListener { if (!answered) done(null) }
+                .create()
+            dialog.show()
+            input.requestFocus()
+        }
+    }
+
+    /** The settings' view of the stored certificate. */
+    @JvmStatic
+    fun infoObject(info: TrekClientIdentity.Info): JSObject = JSObject().apply {
+        put("host", info.host)
+        put("port", info.port)
+        put("subject", info.subject)
+        put("issuer", info.issuer)
+        put("notAfter", info.notAfter)
+    }
+
+    private fun readCapped(stream: InputStream, max: Int): ByteArray {
+        val out = ByteArrayOutputStream()
+        val buffer = ByteArray(8192)
+        while (out.size() < max) {
+            val n = stream.read(buffer, 0, minOf(buffer.size, max - out.size()))
+            if (n < 0) break
+            out.write(buffer, 0, n)
+        }
+        return out.toByteArray()
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/clientcert/ClientCertWatch.kt

@@ -0,0 +1,50 @@
+package com.liketrek.trek.clientcert
+
+import android.content.Context
+import java.util.concurrent.atomic.AtomicLong
+
+/**
+ * Notices when the user's server stops letting the app in for want of a
+ * client certificate: one removed, expired, or no longer trusted by the proxy.
+ *
+ * The page alone does not show it. The service worker serves TREK's start page
+ * from its cache, so the page loads and only its requests fail, and the UI
+ * reports a server it cannot reach with no way to add a certificate. So when
+ * the server asks for one, the app checks once natively whether TREK answers
+ * with what it holds. Only a check that fails at the certificate (the handshake
+ * broke off, or the proxy answered with its own 4xx) sends the app to the
+ * address screen, which says so and offers to add one. A server that merely
+ * asks and lets everyone in answers TREK's 200, and nothing happens.
+ */
+object ClientCertWatch {
+
+    private const val MIN_INTERVAL_MS = 60_000L
+    private const val FEATURES_PATH = "/api/health/features"
+    private const val TIMEOUT_MS = 8000
+
+    private val lastCheck = AtomicLong(0)
+
+    /** Called where the server asked for a certificate; `onRefused` runs at most once a minute, on a background thread. */
+    @JvmStatic
+    fun serverAsked(context: Context, serverUrl: String?, onRefused: Runnable) {
+        if (serverUrl == null) return
+        val now = System.currentTimeMillis()
+        val last = lastCheck.get()
+        if (now - last < MIN_INTERVAL_MS || !lastCheck.compareAndSet(last, now)) return
+        val appContext = context.applicationContext
+        Thread({
+            val result = ClientCertActions.request(appContext, serverUrl.trimEnd('/') + FEATURES_PATH, TIMEOUT_MS)
+            if (refused(result.optBoolean("certRequested"), result.optInt("status"))) onRefused.run()
+        }, "trek-client-cert-watch").start()
+    }
+
+    /** A new or removed certificate is worth a check of its own, whenever the last one ran. */
+    @JvmStatic
+    fun reset() {
+        lastCheck.set(0)
+    }
+
+    /** The server asked for a certificate and did not answer with TREK. */
+    @JvmStatic
+    fun refused(certRequested: Boolean, status: Int): Boolean = certRequested && (status == 0 || status in 400..499)
+}

client/android/app/src/main/java/com/liketrek/trek/clientcert/TrekClientIdentity.kt

@@ -0,0 +1,261 @@
+package com.liketrek.trek.clientcert
+
+import android.content.Context
+import android.security.keystore.KeyGenParameterSpec
+import android.security.keystore.KeyProperties
+import android.util.Base64
+import java.io.ByteArrayInputStream
+import java.io.IOException
+import java.net.Socket
+import java.security.KeyFactory
+import java.security.KeyStore
+import java.security.Principal
+import java.security.PrivateKey
+import java.security.UnrecoverableKeyException
+import java.security.cert.CertificateFactory
+import java.security.cert.X509Certificate
+import java.security.spec.PKCS8EncodedKeySpec
+import java.util.Date
+import java.util.Locale
+import javax.crypto.Cipher
+import javax.crypto.KeyGenerator
+import javax.crypto.SecretKey
+import javax.crypto.spec.GCMParameterSpec
+import javax.net.ssl.SSLContext
+import javax.net.ssl.SSLEngine
+import javax.net.ssl.SSLSocket
+import javax.net.ssl.SSLSocketFactory
+import javax.net.ssl.X509ExtendedKeyManager
+
+/**
+ * The client certificate a user's TREK server asks for (mutual TLS): a proxy
+ * such as Cloudflare, nginx, Caddy or Traefik in front of TREK lets through only
+ * devices that show one. The app holds at most one, for one server.
+ *
+ * It comes in as a PKCS#12 file (.p12, .pfx) and its password. Neither is kept:
+ * the private key is sealed with an AES key of the Android keystore, which
+ * never leaves it, and stored with the certificate chain in the app's private
+ * preferences. In memory the key is an ordinary one, which TLS 1.2 and 1.3 and
+ * the WebView all take, whatever its kind; a key imported into the keystore
+ * itself would be refused by some of them for its padding or digest rules.
+ *
+ * Only the host and port it was imported for ever see it (`identityFor`), so a
+ * login page, a map tile provider or liketrek.com never learns of it.
+ */
+object TrekClientIdentity {
+
+    private const val PREFS = "trek_client_identity"
+    private const val WRAP_ALIAS = "trek-client-identity-wrap"
+    private const val KEYMANAGER_ALIAS = "trek-client-identity"
+    private const val GCM_TAG_BITS = 128
+
+    /** Why a file could not be taken. */
+    enum class Failure { PASSWORD, FORMAT, NO_KEY, EXPIRED, NOT_YET_VALID }
+
+    class ImportException(val reason: Failure) : Exception(reason.name)
+
+    class Identity(val key: PrivateKey, val chain: Array<X509Certificate>)
+
+    /** What the settings show: who the certificate names, who issued it, until when, and for which server. */
+    data class Info(val host: String, val port: Int, val subject: String, val issuer: String, val notAfter: Long)
+
+    /** The opened identity, with the sealed key text it was opened from: opened once, not per request. */
+    @Volatile private var cached: Pair<String, Identity>? = null
+
+    /** The last time a server asked for a certificate while the app showed it: for the address screen. */
+    @Volatile var lastRequest: Request? = null
+        private set
+
+    data class Request(val host: String, val port: Int, val served: Boolean)
+
+    private class Stored(val host: String, val port: Int, val algorithm: String, val sealedText: String, val iv: ByteArray, val chain: List<ByteArray>)
+
+    /**
+     * Reads a PKCS#12 file: the first entry that holds a private key, with its chain.
+     * Throws ImportException naming what is wrong with it.
+     */
+    @JvmStatic
+    @JvmOverloads
+    @Throws(ImportException::class)
+    fun read(bytes: ByteArray, password: CharArray, now: Date = Date()): Identity {
+        val store = KeyStore.getInstance("PKCS12")
+        try {
+            store.load(ByteArrayInputStream(bytes), password)
+        } catch (e: IOException) {
+            throw ImportException(if (isPasswordFailure(e)) Failure.PASSWORD else Failure.FORMAT)
+        } catch (e: Exception) {
+            throw ImportException(Failure.FORMAT)
+        }
+        val alias = store.aliases().toList().firstOrNull { store.isKeyEntry(it) } ?: throw ImportException(Failure.NO_KEY)
+        val key = try {
+            store.getKey(alias, password) as? PrivateKey
+        } catch (e: UnrecoverableKeyException) {
+            throw ImportException(Failure.PASSWORD)
+        } ?: throw ImportException(Failure.NO_KEY)
+        val chain = store.getCertificateChain(alias)?.mapNotNull { it as? X509Certificate }?.toTypedArray()
+        if (chain.isNullOrEmpty()) throw ImportException(Failure.NO_KEY)
+        val leaf = chain[0]
+        if (now.after(leaf.notAfter)) throw ImportException(Failure.EXPIRED)
+        if (now.before(leaf.notBefore)) throw ImportException(Failure.NOT_YET_VALID)
+        return Identity(key, chain)
+    }
+
+    /** A wrong password shows up as a failed MAC check or an unrecoverable key, wrapped in an IOException. */
+    private fun isPasswordFailure(e: Throwable): Boolean {
+        var cause: Throwable? = e
+        while (cause != null) {
+            if (cause is UnrecoverableKeyException || cause is javax.crypto.BadPaddingException) return true
+            if (cause.message?.lowercase(Locale.ROOT)?.contains("password") == true) return true
+            cause = cause.cause
+        }
+        return false
+    }
+
+    /** Keeps the identity for this host and port, replacing any other. */
+    @JvmStatic
+    fun save(context: Context, identity: Identity, host: String, port: Int) {
+        val cipher = Cipher.getInstance("AES/GCM/NoPadding")
+        cipher.init(Cipher.ENCRYPT_MODE, wrapKey())
+        val sealed = cipher.doFinal(identity.key.encoded)
+        prefs(context).edit()
+            .putString("host", host.lowercase(Locale.ROOT))
+            .putInt("port", port)
+            .putString("algorithm", identity.key.algorithm)
+            .putString("key", encode(sealed))
+            .putString("iv", encode(cipher.iv))
+            .putString("chain", identity.chain.joinToString(",") { encode(it.encoded) })
+            .apply()
+        cached = null
+    }
+
+    @JvmStatic
+    fun remove(context: Context) {
+        prefs(context).edit().clear().apply()
+        cached = null
+    }
+
+    @JvmStatic
+    fun info(context: Context): Info? {
+        val stored = stored(context) ?: return null
+        val leaf = runCatching { certificate(stored.chain.first()) }.getOrNull() ?: return null
+        return Info(stored.host, stored.port, commonName(leaf.subjectX500Principal), commonName(leaf.issuerX500Principal), leaf.notAfter.time)
+    }
+
+    /** The identity for a server at this host and port, or null when there is none for it. */
+    @JvmStatic
+    fun identityFor(context: Context, host: String?, port: Int): Identity? {
+        val stored = stored(context) ?: return null
+        if (!matches(stored.host, stored.port, host, port)) return null
+        return opened(stored)
+    }
+
+    private fun opened(stored: Stored): Identity? {
+        cached?.let { (from, identity) -> if (from == stored.sealedText) return identity }
+        val identity = runCatching { open(stored) }.getOrNull() ?: return null
+        cached = stored.sealedText to identity
+        return identity
+    }
+
+    /** Whether a request to host and port (-1 or 0 for the scheme's default) goes to the server the identity is for. */
+    @JvmStatic
+    fun matches(storedHost: String, storedPort: Int, host: String?, port: Int): Boolean {
+        if (host == null || !host.equals(storedHost, ignoreCase = true)) return false
+        val effective = if (port <= 0) 443 else port
+        return effective == storedPort
+    }
+
+    /** Called where a server asked for a certificate, so the address screen can offer one. */
+    @JvmStatic
+    fun noteRequest(host: String?, port: Int, served: Boolean) {
+        if (host == null) return
+        lastRequest = Request(host.lowercase(Locale.ROOT), if (port <= 0) 443 else port, served)
+    }
+
+    /**
+     * A socket factory for the app's own requests (the server check, map tiles).
+     * It offers the identity only when the server it is talking to asks for one
+     * and is the one the identity is for, and tells `onAsked` about every ask.
+     */
+    @JvmStatic
+    fun socketFactory(context: Context, onAsked: ((host: String, port: Int, served: Boolean) -> Unit)? = null): SSLSocketFactory {
+        val appContext = context.applicationContext
+        val manager = object : X509ExtendedKeyManager() {
+            // Decided per handshake in choose(); the key and chain are then read for
+            // the one alias, so parallel connections never see each other's choice.
+            private fun choose(host: String?, port: Int): String? {
+                val identity = identityFor(appContext, host, port)
+                if (host != null) {
+                    noteRequest(host, port, identity != null)
+                    onAsked?.invoke(host.lowercase(Locale.ROOT), if (port <= 0) 443 else port, identity != null)
+                }
+                return if (identity != null) KEYMANAGER_ALIAS else null
+            }
+
+            override fun chooseClientAlias(keyType: Array<out String>?, issuers: Array<out Principal>?, socket: Socket?): String? {
+                val session = (socket as? SSLSocket)?.handshakeSession
+                return choose(session?.peerHost, session?.peerPort ?: -1)
+            }
+
+            override fun chooseEngineClientAlias(keyType: Array<out String>?, issuers: Array<out Principal>?, engine: SSLEngine?): String? =
+                choose(engine?.peerHost, engine?.peerPort ?: -1)
+
+            override fun getCertificateChain(alias: String?): Array<X509Certificate>? =
+                if (alias == KEYMANAGER_ALIAS) stored(appContext)?.let { opened(it) }?.chain else null
+            override fun getPrivateKey(alias: String?): PrivateKey? =
+                if (alias == KEYMANAGER_ALIAS) stored(appContext)?.let { opened(it) }?.key else null
+            override fun getClientAliases(keyType: String?, issuers: Array<out Principal>?): Array<String>? = null
+            override fun getServerAliases(keyType: String?, issuers: Array<out Principal>?): Array<String>? = null
+            override fun chooseServerAlias(keyType: String?, issuers: Array<out Principal>?, socket: Socket?): String? = null
+        }
+        val tls = SSLContext.getInstance("TLS")
+        tls.init(arrayOf(manager), null, null)
+        return tls.socketFactory
+    }
+
+    private fun open(stored: Stored): Identity {
+        val cipher = Cipher.getInstance("AES/GCM/NoPadding")
+        cipher.init(Cipher.DECRYPT_MODE, wrapKey(), GCMParameterSpec(GCM_TAG_BITS, stored.iv))
+        val key = KeyFactory.getInstance(stored.algorithm).generatePrivate(PKCS8EncodedKeySpec(cipher.doFinal(decode(stored.sealedText))))
+        return Identity(key, stored.chain.map { certificate(it) }.toTypedArray())
+    }
+
+    private fun stored(context: Context): Stored? {
+        val p = prefs(context)
+        val host = p.getString("host", null) ?: return null
+        val algorithm = p.getString("algorithm", null) ?: return null
+        val key = p.getString("key", null) ?: return null
+        val iv = p.getString("iv", null) ?: return null
+        val chain = p.getString("chain", null)?.split(",")?.filter { it.isNotEmpty() }?.map { decode(it) } ?: return null
+        if (chain.isEmpty()) return null
+        return Stored(host, p.getInt("port", 443), algorithm, key, decode(iv), chain)
+    }
+
+    /** The keystore's AES key that seals the private key; made once, never leaves the keystore. */
+    private fun wrapKey(): SecretKey {
+        val keystore = KeyStore.getInstance("AndroidKeyStore").apply { load(null) }
+        (keystore.getKey(WRAP_ALIAS, null) as? SecretKey)?.let { return it }
+        val generator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, "AndroidKeyStore")
+        generator.init(
+            KeyGenParameterSpec.Builder(WRAP_ALIAS, KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT)
+                .setBlockModes(KeyProperties.BLOCK_MODE_GCM)
+                .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
+                .setKeySize(256)
+                .build()
+        )
+        return generator.generateKey()
+    }
+
+    private fun certificate(der: ByteArray): X509Certificate =
+        CertificateFactory.getInstance("X.509").generateCertificate(ByteArrayInputStream(der)) as X509Certificate
+
+    /** The CN of a name, or the whole name when it has none. */
+    @JvmStatic
+    fun commonName(principal: javax.security.auth.x500.X500Principal): String {
+        val name = principal.getName(javax.security.auth.x500.X500Principal.RFC2253)
+        return Regex("(?:^|,)CN=((?:\\\\.|[^,])*)").find(name)?.groupValues?.get(1)?.replace("\\", "") ?: name
+    }
+
+    private fun prefs(context: Context) = context.applicationContext.getSharedPreferences(PREFS, Context.MODE_PRIVATE)
+    private fun encode(bytes: ByteArray) = Base64.encodeToString(bytes, Base64.NO_WRAP)
+    private fun decode(text: String) = Base64.decode(text, Base64.NO_WRAP)
+}

client/android/app/src/main/java/com/liketrek/trek/location/TrekLocation.kt

@@ -0,0 +1,91 @@
+package com.liketrek.trek.location
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.location.Location
+import android.location.LocationManager
+import android.os.Build
+import androidx.core.location.LocationListenerCompat
+import androidx.core.location.LocationManagerCompat
+import androidx.core.location.LocationRequestCompat
+import androidx.core.content.ContextCompat
+import com.getcapacitor.JSObject
+import org.json.JSONObject
+
+/**
+ * One location stream for the UI's navigator.geolocation (native/geolocation.ts),
+ * the counterpart of TrekLocation in TrekShellPlugin.swift: the system's fused
+ * provider where there is one (Android 12+), GPS and network before, with
+ * positions and errors shaped like the Geolocation API's. Asking for the
+ * permission is the plugin's part; this starts once it is granted.
+ */
+class TrekLocation(context: Context, private val emit: (JSObject) -> Unit) {
+    private val manager = context.getSystemService(LocationManager::class.java)
+    private val executor = ContextCompat.getMainExecutor(context)
+    private val listeners = mutableListOf<LocationListenerCompat>()
+
+    @SuppressLint("MissingPermission")
+    fun start(highAccuracy: Boolean) {
+        stop()
+        if (manager == null || !LocationManagerCompat.isLocationEnabled(manager)) {
+            emitError(2, "Location services are off")
+            return
+        }
+        val request = LocationRequestCompat.Builder(if (highAccuracy) 2_000L else 10_000L)
+            .setQuality(if (highAccuracy) LocationRequestCompat.QUALITY_HIGH_ACCURACY else LocationRequestCompat.QUALITY_BALANCED_POWER_ACCURACY)
+            .setMinUpdateDistanceMeters(if (highAccuracy) 2f else 25f)
+            .build()
+        val providers = when {
+            Build.VERSION.SDK_INT >= Build.VERSION_CODES.S && manager.hasProvider(LocationManager.FUSED_PROVIDER) -> listOf(LocationManager.FUSED_PROVIDER)
+            else -> listOf(LocationManager.GPS_PROVIDER, LocationManager.NETWORK_PROVIDER).filter { manager.isProviderEnabled(it) }
+        }
+        if (providers.isEmpty()) {
+            emitError(2, "No location provider")
+            return
+        }
+        // The last known fix answers getCurrentPosition at once; a fresh one follows.
+        providers.mapNotNull { runCatching { manager.getLastKnownLocation(it) }.getOrNull() }
+            .maxByOrNull { it.time }
+            ?.takeIf { System.currentTimeMillis() - it.time < 120_000 }
+            ?.let { emit(payload(it)) }
+        for (provider in providers) {
+            val listener = LocationListenerCompat { location -> emit(payload(location)) }
+            try {
+                LocationManagerCompat.requestLocationUpdates(manager, provider, request, executor, listener)
+                listeners += listener
+            } catch (e: SecurityException) {
+                emitError(1, "Location permission denied")
+                return
+            }
+        }
+    }
+
+    // Removing updates needs no permission of its own; one revoked meanwhile only means there is nothing left to stop.
+    @SuppressLint("MissingPermission")
+    fun stop() {
+        val m = manager ?: return
+        for (listener in listeners) {
+            try {
+                LocationManagerCompat.removeUpdates(m, listener)
+            } catch (e: SecurityException) {
+                // Nothing to stop.
+            }
+        }
+        listeners.clear()
+    }
+
+    fun emitError(code: Int, message: String) {
+        emit(JSObject().put("error", JSObject().put("code", code).put("message", message)))
+    }
+
+    companion object {
+        fun payload(location: Location): JSObject = JSObject()
+            .put("latitude", location.latitude)
+            .put("longitude", location.longitude)
+            .put("accuracy", location.accuracy.toDouble())
+            .put("altitude", if (location.hasAltitude()) location.altitude else JSONObject.NULL)
+            .put("speed", if (location.hasSpeed()) location.speed.toDouble() else JSONObject.NULL)
+            .put("heading", if (location.hasBearing()) location.bearing.toDouble() else JSONObject.NULL)
+            .put("timestamp", location.time.toDouble())
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/screen/TrekKeyCommands.kt

@@ -0,0 +1,101 @@
+package com.liketrek.trek.screen
+
+import android.view.KeyEvent
+import android.view.KeyboardShortcutGroup
+import android.view.KeyboardShortcutInfo
+import org.json.JSONArray
+import org.json.JSONObject
+
+/**
+ * The UI's keyboard shortcuts as the app's own (TrekShell.setKeyCommands, feature
+ * keyCommands), the Android side of TrekKeyCommands in the iOS shell: a hardware
+ * keyboard's shortcut runs the UI's command even while the focus sits outside the
+ * page, and the system's shortcut list (Meta + /) shows them under their names in
+ * the UI's language. Each screen replaces the list, so only what works here is on it.
+ *
+ * "command" is Ctrl on Android (Meta is accepted too, for keyboards made for a Mac),
+ * "option" is Alt.
+ */
+object TrekKeyCommands {
+    data class Command(val id: String, val title: String, val keyCode: Int, val modifiers: Int)
+
+    @Volatile var current: List<Command> = emptyList()
+        private set
+
+    var onPress: ((String) -> Unit)? = null
+
+    fun set(raw: JSONArray?) {
+        current = parse(raw)
+    }
+
+    fun parse(raw: JSONArray?): List<Command> {
+        if (raw == null) return emptyList()
+        return (0 until raw.length()).mapNotNull { i ->
+            val o: JSONObject = raw.optJSONObject(i) ?: return@mapNotNull null
+            val id = o.optString("id").ifEmpty { return@mapNotNull null }
+            val title = o.optString("title").ifEmpty { return@mapNotNull null }
+            val key = keyCode(o.optString("input")) ?: return@mapNotNull null
+            var meta = 0
+            val mods = o.optJSONArray("modifiers")
+            for (j in 0 until (mods?.length() ?: 0)) {
+                meta = meta or when (mods!!.optString(j)) {
+                    "command", "control" -> KeyEvent.META_CTRL_ON
+                    "shift" -> KeyEvent.META_SHIFT_ON
+                    "option" -> KeyEvent.META_ALT_ON
+                    else -> 0
+                }
+            }
+            Command(id, title, key, meta)
+        }
+    }
+
+    /** The key a UI input names: a letter, a digit, an arrow, escape or a punctuation mark. */
+    fun keyCode(input: String): Int? = when (input.lowercase()) {
+        "left" -> KeyEvent.KEYCODE_DPAD_LEFT
+        "right" -> KeyEvent.KEYCODE_DPAD_RIGHT
+        "up" -> KeyEvent.KEYCODE_DPAD_UP
+        "down" -> KeyEvent.KEYCODE_DPAD_DOWN
+        "escape" -> KeyEvent.KEYCODE_ESCAPE
+        "enter", "\r" -> KeyEvent.KEYCODE_ENTER
+        "," -> KeyEvent.KEYCODE_COMMA
+        "." -> KeyEvent.KEYCODE_PERIOD
+        "/" -> KeyEvent.KEYCODE_SLASH
+        "[" -> KeyEvent.KEYCODE_LEFT_BRACKET
+        "]" -> KeyEvent.KEYCODE_RIGHT_BRACKET
+        "-" -> KeyEvent.KEYCODE_MINUS
+        "=" -> KeyEvent.KEYCODE_EQUALS
+        " ", "space" -> KeyEvent.KEYCODE_SPACE
+        else -> when {
+            input.length == 1 && input[0].lowercaseChar() in 'a'..'z' -> KeyEvent.KEYCODE_A + (input[0].lowercaseChar() - 'a')
+            input.length == 1 && input[0] in '0'..'9' -> KeyEvent.KEYCODE_0 + (input[0] - '0')
+            else -> null
+        }
+    }
+
+    private const val MASK = KeyEvent.META_CTRL_ON or KeyEvent.META_SHIFT_ON or KeyEvent.META_ALT_ON
+
+    /** The command a key press stands for, if any. Meta counts as Ctrl. */
+    fun match(keyCode: Int, metaState: Int): Command? {
+        var state = metaState
+        if (state and KeyEvent.META_META_ON != 0) state = state or KeyEvent.META_CTRL_ON
+        val pressed = state and MASK
+        return current.firstOrNull { it.keyCode == keyCode && it.modifiers == pressed }
+    }
+
+    /** Runs the matching command for a key going down. True when one took it. */
+    fun dispatch(event: KeyEvent): Boolean {
+        if (event.action != KeyEvent.ACTION_DOWN || event.repeatCount > 0) return false
+        val command = match(event.keyCode, event.metaState) ?: return false
+        // A plain key (no modifier) is left to a text field that has the focus.
+        if (command.modifiers == 0 && event.keyCode != KeyEvent.KEYCODE_ESCAPE) return false
+        val press = onPress ?: return false
+        press(command.id)
+        return true
+    }
+
+    /** The list the system shows for Meta + /. */
+    fun shortcutGroup(label: CharSequence): KeyboardShortcutGroup? {
+        val items = current.map { KeyboardShortcutInfo(it.title, it.keyCode, it.modifiers) }
+        return if (items.isEmpty()) null else KeyboardShortcutGroup(label, items)
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/screen/TrekWindowLayout.kt

@@ -0,0 +1,82 @@
+package com.liketrek.trek.screen
+
+import android.app.Activity
+import android.graphics.Rect
+import androidx.activity.ComponentActivity
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
+import androidx.window.layout.FoldingFeature
+import androidx.window.layout.WindowInfoTracker
+import androidx.window.layout.WindowLayoutInfo
+import androidx.window.layout.WindowMetricsCalculator
+import com.getcapacitor.JSObject
+import kotlinx.coroutines.launch
+
+/**
+ * The window's shape for the UI (TrekShell.getWindowLayout and the
+ * "windowLayout" event, feature windowLayout): its size class by Android's
+ * breakpoints, and a foldable's posture and hinge through Jetpack WindowManager.
+ *
+ * The layouts themselves follow the CSS size classes (hooks/sizeClass.ts), which
+ * the WebView answers from the window like any browser; this adds what CSS cannot
+ * see: that a Galaxy Z Fold or Pixel Fold is half open like a laptop or a book,
+ * and where the hinge runs, so a layout can keep content off the fold. Lengths
+ * are in CSS pixels, relative to the window.
+ */
+object TrekWindowLayout {
+    /** The last WindowLayoutInfo WindowManager reported, with the fold in it. */
+    @Volatile private var lastInfo: WindowLayoutInfo? = null
+
+    /** The window now, with the posture last reported: what getWindowLayout answers. */
+    fun current(activity: Activity): JSObject = describe(activity, lastInfo)
+
+    fun observe(activity: ComponentActivity, emit: (JSObject) -> Unit) {
+        activity.lifecycleScope.launch {
+            activity.repeatOnLifecycle(Lifecycle.State.STARTED) {
+                WindowInfoTracker.getOrCreate(activity).windowLayoutInfo(activity).collect { info ->
+                    lastInfo = info
+                    emit(describe(activity, info))
+                }
+            }
+        }
+    }
+
+    fun describe(activity: Activity, info: WindowLayoutInfo?): JSObject {
+        val density = activity.resources.displayMetrics.density
+        val bounds = WindowMetricsCalculator.getOrCreate().computeCurrentWindowMetrics(activity).bounds
+        val widthDp = bounds.width() / density
+        val heightDp = bounds.height() / density
+        val result = JSObject()
+            .put("width", widthDp.toInt())
+            .put("height", heightDp.toInt())
+            .put("widthClass", sizeClass(widthDp, 600f, 840f))
+            .put("heightClass", sizeClass(heightDp, 480f, 900f))
+        val fold = info?.displayFeatures?.filterIsInstance<FoldingFeature>()?.firstOrNull()
+        if (fold == null) {
+            result.put("posture", "none")
+        } else {
+            val r: Rect = fold.bounds
+            result.put("posture", if (fold.state == FoldingFeature.State.HALF_OPENED) "halfOpened" else "flat")
+                .put("orientation", if (fold.orientation == FoldingFeature.Orientation.VERTICAL) "vertical" else "horizontal")
+                .put("separating", fold.isSeparating)
+                .put("occluding", fold.occlusionType == FoldingFeature.OcclusionType.FULL)
+                .put(
+                    "hinge",
+                    JSObject()
+                        .put("left", ((r.left - bounds.left) / density).toInt())
+                        .put("top", ((r.top - bounds.top) / density).toInt())
+                        .put("right", ((r.right - bounds.left) / density).toInt())
+                        .put("bottom", ((r.bottom - bounds.top) / density).toInt()),
+                )
+        }
+        return result
+    }
+
+    /** Android's window size classes: compact, medium, expanded. */
+    fun sizeClass(dp: Float, medium: Float, expanded: Float): String = when {
+        dp < medium -> "compact"
+        dp < expanded -> "medium"
+        else -> "expanded"
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/share/ShareActivity.kt

@@ -0,0 +1,431 @@
+package com.liketrek.trek.share
+
+import android.content.Intent
+import android.graphics.Bitmap
+import android.os.Bundle
+import android.text.format.Formatter
+import android.view.HapticFeedbackConstants
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import androidx.compose.animation.AnimatedContent
+import androidx.compose.animation.core.spring
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.scaleIn
+import androidx.compose.animation.togetherWith
+import androidx.compose.foundation.BorderStroke
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyRow
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.CalendarMonth
+import androidx.compose.material.icons.rounded.Check
+import androidx.compose.material.icons.rounded.Description
+import androidx.compose.material.icons.rounded.Email
+import androidx.compose.material.icons.rounded.Image
+import androidx.compose.material.icons.rounded.Language
+import androidx.compose.material.icons.rounded.PictureAsPdf
+import androidx.compose.material.icons.rounded.Schedule
+import androidx.compose.material.icons.rounded.ShortText
+import androidx.compose.material.icons.rounded.Wallet
+import androidx.compose.material.icons.rounded.ErrorOutline
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.rememberModalBottomSheetState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalView
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.core.content.pm.ShortcutManagerCompat
+import androidx.lifecycle.lifecycleScope
+import com.liketrek.trek.MainActivity
+import com.liketrek.trek.R
+import com.liketrek.trek.ui.TrekMaterialTheme
+import com.liketrek.trek.widget.WidgetArt
+import java.time.LocalDate
+import java.time.temporal.ChronoUnit
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+/**
+ * "TREK" in the system share sheet (and "Open with TREK"): a Material bottom
+ * sheet over the app that shared, showing what came in, the trip it goes to and
+ * one button, the counterpart of the iOS share extension (ShareView.swift). The
+ * item and the trip are left for the app (ShareHandoff) and TREK opens, where
+ * the booking import takes over. A direct-share shortcut of a trip
+ * (TrekShortcuts) arrives with that trip already picked.
+ */
+class ShareActivity : ComponentActivity() {
+    private sealed interface Phase {
+        data object Loading : Phase
+        data object Ready : Phase
+        data object Saving : Phase
+        data object Done : Phase
+        data class Failed(val message: Int) : Phase
+    }
+
+    private var phase by mutableStateOf<Phase>(Phase.Loading)
+    private var item by mutableStateOf<ShareItem?>(null)
+    private var trips by mutableStateOf<List<ShareHandoff.Trip>>(emptyList())
+    private var selected by mutableStateOf<Long?>(null)
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        super.onCreate(savedInstanceState)
+        trips = ShareHandoff.trips(this)
+        val shortcutTrip = intent.getStringExtra(ShortcutManagerCompat.EXTRA_SHORTCUT_ID)?.removePrefix("trip.")?.toLongOrNull()
+        selected = if (savedInstanceState?.containsKey(SELECTED) == true) {
+            // The trip picked before the system recreated the sheet; -1 is "choose later".
+            savedInstanceState.getLong(SELECTED).takeIf { it >= 0 }
+        } else {
+            shortcutTrip?.takeIf { id -> trips.any { it.id == id } } ?: trips.firstOrNull()?.id
+        }
+        val incoming = intent
+        lifecycleScope.launch {
+            phase = try {
+                item = withContext(Dispatchers.IO) { ShareLoader.load(incoming, contentResolver) }
+                Phase.Ready
+            } catch (e: ShareLoadException) {
+                Phase.Failed(if (e.reason == ShareLoadException.Reason.TOO_LARGE) R.string.share_too_large else R.string.share_unsupported)
+            } catch (e: Exception) {
+                Phase.Failed(R.string.share_unsupported)
+            }
+        }
+        setContent {
+            TrekMaterialTheme {
+                Sheet()
+            }
+        }
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putLong(SELECTED, selected ?: -1L)
+    }
+
+    private fun add() {
+        val current = item ?: return
+        if (phase != Phase.Ready) return
+        phase = Phase.Saving
+        lifecycleScope.launch {
+            val stored = withContext(Dispatchers.IO) { ShareHandoff.store(this@ShareActivity, current, selected) }
+            if (!stored) {
+                window.decorView.performHapticFeedback(HapticFeedbackConstants.REJECT)
+                phase = Phase.Failed(R.string.share_failed)
+                return@launch
+            }
+            window.decorView.performHapticFeedback(HapticFeedbackConstants.CONFIRM)
+            phase = Phase.Done
+            delay(850)
+            startActivity(
+                Intent(this@ShareActivity, MainActivity::class.java)
+                    .setAction(MainActivity.ACTION_SHARE_HANDOFF)
+                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_SINGLE_TOP),
+            )
+            finish()
+        }
+    }
+
+    @OptIn(ExperimentalMaterial3Api::class)
+    @Composable
+    private fun Sheet() {
+        val state = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+        val scope = rememberCoroutineScope()
+        val dismiss: () -> Unit = {
+            scope.launch { state.hide() }.invokeOnCompletion { finish() }
+        }
+        ModalBottomSheet(
+            onDismissRequest = { finish() },
+            sheetState = state,
+            containerColor = MaterialTheme.colorScheme.surfaceContainerLow,
+        ) {
+            Column(modifier = Modifier.fillMaxWidth().navigationBarsPadding().padding(bottom = 12.dp)) {
+                Header(onClose = dismiss)
+                Spacer(Modifier.height(16.dp))
+                when (val now = phase) {
+                    is Phase.Failed -> Failure(stringResource(now.message), onClose = dismiss)
+                    else -> Content(now)
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun Header(onClose: () -> Unit) {
+        Row(modifier = Modifier.fillMaxWidth().padding(horizontal = 20.dp), verticalAlignment = Alignment.CenterVertically) {
+            Box(
+                modifier = Modifier.size(40.dp).clip(RoundedCornerShape(12.dp)).background(MaterialTheme.colorScheme.primary),
+                contentAlignment = Alignment.Center,
+            ) {
+                Text("T", color = MaterialTheme.colorScheme.onPrimary, fontWeight = FontWeight.Black, fontSize = 21.sp)
+            }
+            Spacer(Modifier.width(12.dp))
+            Column(modifier = Modifier.weight(1f)) {
+                Text("TREK", style = MaterialTheme.typography.labelMedium, color = MaterialTheme.colorScheme.onSurfaceVariant, letterSpacing = 2.4.sp)
+                Text(stringResource(R.string.share_title), style = MaterialTheme.typography.titleLarge, fontWeight = FontWeight.Bold)
+            }
+            TextButton(onClick = onClose) { Text(stringResource(R.string.share_cancel)) }
+        }
+    }
+
+    @Composable
+    private fun Content(now: Phase) {
+        Column(verticalArrangement = Arrangement.spacedBy(18.dp)) {
+            ItemCard(item, Modifier.padding(horizontal = 20.dp))
+            Column(verticalArrangement = Arrangement.spacedBy(10.dp)) {
+                Text(
+                    stringResource(R.string.share_trip).uppercase(),
+                    style = MaterialTheme.typography.labelMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    fontWeight = FontWeight.Bold,
+                    letterSpacing = 1.2.sp,
+                    modifier = Modifier.padding(horizontal = 22.dp),
+                )
+                if (trips.isEmpty()) {
+                    Text(
+                        stringResource(R.string.share_no_trips),
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.padding(horizontal = 22.dp),
+                    )
+                } else {
+                    TripRail()
+                }
+            }
+            Text(
+                stringResource(R.string.share_hint),
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier.padding(horizontal = 22.dp),
+            )
+            AddButton(now)
+        }
+    }
+
+    @Composable
+    private fun ItemCard(item: ShareItem?, modifier: Modifier) {
+        val context = LocalContext.current
+        Surface(
+            shape = RoundedCornerShape(20.dp),
+            color = MaterialTheme.colorScheme.surfaceContainerHigh,
+            modifier = modifier.fillMaxWidth(),
+        ) {
+            Row(modifier = Modifier.padding(14.dp), verticalAlignment = Alignment.CenterVertically) {
+                Box(
+                    modifier = Modifier.size(46.dp).clip(RoundedCornerShape(14.dp)).background(MaterialTheme.colorScheme.secondaryContainer),
+                    contentAlignment = Alignment.Center,
+                ) {
+                    if (item == null) {
+                        CircularProgressIndicator(modifier = Modifier.size(20.dp), strokeWidth = 2.dp)
+                    } else {
+                        Icon(kindIcon(item.kind), null, tint = MaterialTheme.colorScheme.onSecondaryContainer)
+                    }
+                }
+                Spacer(Modifier.width(14.dp))
+                Column(modifier = Modifier.weight(1f)) {
+                    Text(
+                        item?.title ?: stringResource(R.string.share_reading),
+                        style = MaterialTheme.typography.titleMedium,
+                        maxLines = 2,
+                        overflow = TextOverflow.Ellipsis,
+                    )
+                    if (item != null) {
+                        val parts = listOfNotNull(stringResource(kindLabel(item.kind)), Formatter.formatShortFileSize(context, item.data.size.toLong()), item.source)
+                        Text(parts.joinToString(", "), style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant, maxLines = 1)
+                    }
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun TripRail() {
+        LazyRow(contentPadding = PaddingValues(horizontal = 20.dp), horizontalArrangement = Arrangement.spacedBy(10.dp)) {
+            items(trips, key = { it.id }) { trip ->
+                TripCard(trip, selected == trip.id) { selected = trip.id }
+            }
+            item {
+                FilterChip(
+                    selected = selected == null,
+                    onClick = { selected = null },
+                    label = { Text(stringResource(R.string.share_later)) },
+                    leadingIcon = { Icon(Icons.Rounded.Schedule, null, modifier = Modifier.size(18.dp)) },
+                    modifier = Modifier.height(132.dp).padding(vertical = 44.dp),
+                )
+            }
+        }
+    }
+
+    @Composable
+    private fun TripCard(trip: ShareHandoff.Trip, isSelected: Boolean, onClick: () -> Unit) {
+        val view = LocalView.current
+        val cover: Bitmap? = remember(trip.id) { WidgetArt.cover(trip.cover, 360) ?: WidgetArt.sky(trip.title, 300, 200) }
+        val border = if (isSelected) BorderStroke(3.dp, MaterialTheme.colorScheme.primary) else BorderStroke(1.dp, MaterialTheme.colorScheme.outlineVariant)
+        Surface(
+            shape = RoundedCornerShape(20.dp),
+            border = border,
+            modifier = Modifier.width(168.dp).height(132.dp).clip(RoundedCornerShape(20.dp)).clickable {
+                view.performHapticFeedback(HapticFeedbackConstants.CLOCK_TICK)
+                onClick()
+            },
+        ) {
+            Box {
+                if (cover != null) {
+                    Image(cover.asImageBitmap(), null, contentScale = ContentScale.Crop, modifier = Modifier.fillMaxSize())
+                }
+                Box(
+                    modifier = Modifier.fillMaxSize().background(
+                        Brush.verticalGradient(listOf(Color.Black.copy(alpha = 0.1f), Color.Black.copy(alpha = 0.68f))),
+                    ),
+                )
+                if (isSelected) {
+                    Box(
+                        modifier = Modifier.padding(8.dp).size(24.dp).clip(CircleShape).background(MaterialTheme.colorScheme.primary).align(Alignment.TopEnd),
+                        contentAlignment = Alignment.Center,
+                    ) {
+                        Icon(Icons.Rounded.Check, null, tint = MaterialTheme.colorScheme.onPrimary, modifier = Modifier.size(16.dp))
+                    }
+                }
+                Column(modifier = Modifier.align(Alignment.BottomStart).padding(12.dp)) {
+                    Text(when_(trip), color = Color.White.copy(alpha = 0.82f), style = MaterialTheme.typography.labelSmall, fontWeight = FontWeight.Bold)
+                    Text(trip.title, color = Color.White, style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.Bold, maxLines = 2, overflow = TextOverflow.Ellipsis)
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun when_(trip: ShareHandoff.Trip): String {
+        val today = LocalDate.now()
+        val start = trip.start
+        val end = trip.end
+        return when {
+            end != null && end < today -> stringResource(R.string.share_past)
+            start == null || start <= today -> stringResource(R.string.share_now)
+            ChronoUnit.DAYS.between(today, start) == 1L -> stringResource(R.string.share_tomorrow)
+            else -> stringResource(R.string.share_in_days, ChronoUnit.DAYS.between(today, start).toInt())
+        }
+    }
+
+    @Composable
+    private fun AddButton(now: Phase) {
+        val title = trips.firstOrNull { it.id == selected }?.title
+        Button(
+            onClick = ::add,
+            enabled = now == Phase.Ready,
+            shape = RoundedCornerShape(18.dp),
+            colors = if (now == Phase.Done) {
+                ButtonDefaults.buttonColors(containerColor = Color(0xFF2FA37A), disabledContainerColor = Color(0xFF2FA37A), disabledContentColor = Color.White)
+            } else {
+                ButtonDefaults.buttonColors()
+            },
+            contentPadding = PaddingValues(vertical = 16.dp),
+            modifier = Modifier.fillMaxWidth().padding(horizontal = 20.dp),
+        ) {
+            AnimatedContent(
+                targetState = now,
+                transitionSpec = { (fadeIn() + scaleIn(spring(dampingRatio = 0.6f))) togetherWith fadeOut() },
+                label = "add",
+            ) { target ->
+                when (target) {
+                    Phase.Saving, Phase.Loading -> CircularProgressIndicator(modifier = Modifier.size(20.dp), strokeWidth = 2.dp, color = MaterialTheme.colorScheme.onPrimary)
+                    Phase.Done -> Row(verticalAlignment = Alignment.CenterVertically) {
+                        Icon(Icons.Rounded.Check, null)
+                        Spacer(Modifier.width(8.dp))
+                        Text(stringResource(R.string.share_added), fontWeight = FontWeight.Bold)
+                    }
+                    else -> Text(
+                        if (title != null) stringResource(R.string.share_add_to, title) else stringResource(R.string.share_add),
+                        fontWeight = FontWeight.Bold,
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis,
+                    )
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun Failure(message: String, onClose: () -> Unit) {
+        Column(modifier = Modifier.fillMaxWidth().padding(20.dp), horizontalAlignment = Alignment.CenterHorizontally) {
+            Icon(Icons.Rounded.ErrorOutline, null, tint = MaterialTheme.colorScheme.error, modifier = Modifier.size(40.dp))
+            Spacer(Modifier.height(12.dp))
+            Text(message, style = MaterialTheme.typography.bodyLarge)
+            Spacer(Modifier.height(16.dp))
+            Button(onClick = onClose, shape = RoundedCornerShape(18.dp)) { Text(stringResource(R.string.share_close)) }
+        }
+    }
+
+    private fun kindIcon(kind: ShareItem.Kind): ImageVector = when (kind) {
+        ShareItem.Kind.PASS -> Icons.Rounded.Wallet
+        ShareItem.Kind.PDF -> Icons.Rounded.PictureAsPdf
+        ShareItem.Kind.MAIL -> Icons.Rounded.Email
+        ShareItem.Kind.CALENDAR -> Icons.Rounded.CalendarMonth
+        ShareItem.Kind.PAGE -> Icons.Rounded.Language
+        ShareItem.Kind.TEXT -> Icons.Rounded.ShortText
+        ShareItem.Kind.IMAGE -> Icons.Rounded.Image
+        ShareItem.Kind.FILE -> Icons.Rounded.Description
+    }
+
+    private fun kindLabel(kind: ShareItem.Kind): Int = when (kind) {
+        ShareItem.Kind.PASS -> R.string.share_kind_pass
+        ShareItem.Kind.PDF -> R.string.share_kind_pdf
+        ShareItem.Kind.MAIL -> R.string.share_kind_mail
+        ShareItem.Kind.CALENDAR -> R.string.share_kind_file
+        ShareItem.Kind.PAGE -> R.string.share_kind_page
+        ShareItem.Kind.TEXT -> R.string.share_kind_text
+        ShareItem.Kind.IMAGE -> R.string.share_kind_image
+        ShareItem.Kind.FILE -> R.string.share_kind_file
+    }
+
+    private companion object {
+        const val SELECTED = "trek.share.selected"
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/share/ShareHandoff.kt

@@ -0,0 +1,69 @@
+package com.liketrek.trek.share
+
+import android.content.Context
+import com.liketrek.trek.widget.WidgetSnapshot
+import com.liketrek.trek.widget.WidgetStore
+import java.io.File
+import java.time.LocalDate
+import org.json.JSONObject
+
+/**
+ * The trips the share sheet offers, and the hand-over of the shared item to the
+ * app. The trip list is the one the app keeps for the widgets (WidgetStore, key
+ * "trips"); the item waits in the app's cache until MainActivity hands it to the
+ * UI (TrekSharedFiles.receiveHandoff), the way ShareHandoff.swift does through
+ * the keychain on iOS.
+ */
+object ShareHandoff {
+    data class Trip(
+        val id: Long,
+        val title: String,
+        val start: LocalDate?,
+        val end: LocalDate?,
+        val place: String?,
+        /** The small cover from the trip's widget snapshot, base64, when the app wrote one. */
+        val cover: String?,
+    )
+
+    /** The trips that have not ended yet, soonest first, then the six most recent past ones. */
+    fun trips(context: Context, today: LocalDate = LocalDate.now()): List<Trip> {
+        val all = WidgetStore.trips(context).map { ref ->
+            val snapshot = WidgetStore.read(context, "trip.${ref.id}")?.let(WidgetSnapshot::parse)
+            Trip(ref.id, ref.title, WidgetSnapshot.day(ref.start), WidgetSnapshot.day(ref.end), snapshot?.trip?.place, snapshot?.trip?.cover)
+        }
+        return order(all, today)
+    }
+
+    internal fun order(all: List<Trip>, today: LocalDate): List<Trip> {
+        val ahead = all.filter { (it.end ?: LocalDate.MAX) >= today }.sortedBy { it.start ?: LocalDate.MAX }
+        val past = all.filter { (it.end ?: LocalDate.MAX) < today }.sortedByDescending { it.end ?: LocalDate.MIN }
+        return ahead + past.take(6)
+    }
+
+    private fun dir(context: Context) = File(context.cacheDir, "share").apply { mkdirs() }
+
+    /** Leaves the item for the app, with the trip it goes to (null: the app asks). */
+    fun store(context: Context, item: ShareItem, tripId: Long?): Boolean = runCatching {
+        val meta = JSONObject().put("name", item.name).put("mimeType", item.mimeType)
+        if (tripId != null) meta.put("tripId", tripId)
+        if (item.url != null) meta.put("url", item.url).put("title", item.title)
+        File(dir(context), "pending.data").writeBytes(item.data)
+        File(dir(context), "pending.json").writeText(meta.toString())
+        true
+    }.getOrDefault(false)
+
+    /** The item left by [store], taken once. */
+    fun take(context: Context): Pair<JSONObject, ByteArray>? {
+        val metaFile = File(dir(context), "pending.json")
+        val dataFile = File(dir(context), "pending.data")
+        if (!metaFile.exists() || !dataFile.exists()) return null
+        return try {
+            JSONObject(metaFile.readText()) to dataFile.readBytes()
+        } catch (e: Exception) {
+            null
+        } finally {
+            metaFile.delete()
+            dataFile.delete()
+        }
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/share/ShareItem.kt

@@ -0,0 +1,210 @@
+package com.liketrek.trek.share
+
+import android.content.ContentResolver
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.provider.OpenableColumns
+import java.io.ByteArrayOutputStream
+import java.io.InputStream
+import java.net.HttpURLConnection
+import java.net.URL
+
+/**
+ * What was shared to TREK, read into a file the booking import takes: a wallet
+ * pass, a PDF, a mail, a calendar entry, a web page, a piece of text or a photo.
+ * The import in the app (BookingImportModal) decides what it can read; this only
+ * carries the bytes over with a name and a type, like ShareItem.swift on iOS.
+ */
+data class ShareItem(
+    val kind: Kind,
+    /** The file name the import sees. */
+    val name: String,
+    val mimeType: String,
+    val data: ByteArray,
+    /** What the sheet shows: a page title, a file name, the first line of a text. */
+    val title: String,
+    /** A host, for a page. */
+    val source: String? = null,
+    /**
+     * The web address it came from, when it is a page or a link: the app offers to
+     * keep it among the trip's links as well as to read a booking out of it.
+     */
+    val url: String? = null,
+) {
+    enum class Kind { PASS, PDF, MAIL, CALENDAR, PAGE, TEXT, IMAGE, FILE }
+
+    override fun equals(other: Any?): Boolean = other is ShareItem && other.name == name && other.data.contentEquals(data)
+
+    override fun hashCode(): Int = name.hashCode() * 31 + data.contentHashCode()
+}
+
+class ShareLoadException(val reason: Reason) : Exception(reason.name) {
+    enum class Reason { UNSUPPORTED, TOO_LARGE }
+}
+
+object ShareLoader {
+    /** The same ceiling as the app's import of an opened file (TrekSharedFiles). */
+    const val MAX_BYTES = 15 * 1024 * 1024
+    private const val PAGE_TIMEOUT_MS = 10_000
+
+    /** Reads what [intent] carries. Runs on a background thread: it may read a file or fetch a page. */
+    fun load(intent: Intent, resolver: ContentResolver): ShareItem {
+        val stream = streamOf(intent)
+        if (stream != null) return fromUri(stream, intent.type, resolver)
+        val text = intent.getCharSequenceExtra(Intent.EXTRA_TEXT)?.toString()?.trim()
+        if (!text.isNullOrEmpty()) return fromText(text, intent.getStringExtra(Intent.EXTRA_SUBJECT))
+        throw ShareLoadException(ShareLoadException.Reason.UNSUPPORTED)
+    }
+
+    /**
+     * The shared document, content:// only. The share target is open to every app,
+     * and a file:// path would be read with TREK's rights, its own private files
+     * included; every sender today shares through a content provider anyway.
+     */
+    private fun streamOf(intent: Intent): Uri? = when (intent.action) {
+        Intent.ACTION_VIEW -> intent.data
+        Intent.ACTION_SEND -> parcelable(intent, Intent.EXTRA_STREAM)
+        Intent.ACTION_SEND_MULTIPLE -> parcelableList(intent)?.firstOrNull()
+        else -> null
+    }?.takeIf(::isShareable)
+
+    internal fun isShareable(uri: Uri): Boolean = uri.scheme == ContentResolver.SCHEME_CONTENT
+
+    @Suppress("DEPRECATION")
+    private fun parcelable(intent: Intent, key: String): Uri? =
+        if (Build.VERSION.SDK_INT >= 33) intent.getParcelableExtra(key, Uri::class.java) else intent.getParcelableExtra(key)
+
+    @Suppress("DEPRECATION")
+    private fun parcelableList(intent: Intent): List<Uri>? =
+        if (Build.VERSION.SDK_INT >= 33) {
+            intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM, Uri::class.java)
+        } else {
+            intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM)
+        }
+
+    private fun fromUri(uri: Uri, intentType: String?, resolver: ContentResolver): ShareItem {
+        val name = displayName(uri, resolver)
+        val size = runCatching {
+            resolver.query(uri, arrayOf(OpenableColumns.SIZE), null, null, null)?.use { if (it.moveToFirst() && !it.isNull(0)) it.getLong(0) else null }
+        }.getOrNull()
+        if (size != null && size > MAX_BYTES) throw ShareLoadException(ShareLoadException.Reason.TOO_LARGE)
+        val data = resolver.openInputStream(uri)?.use { readCapped(it) } ?: throw ShareLoadException(ShareLoadException.Reason.UNSUPPORTED)
+        val mime = resolver.getType(uri) ?: intentType ?: "application/octet-stream"
+        val (kind, normalized) = classify(name, mime)
+        return checked(ShareItem(kind, withExtension(name, kind), normalized, data, name.substringBeforeLast('.').ifBlank { name }))
+    }
+
+    /**
+     * A link becomes the page it points at, or the bare link when the page cannot be
+     * read (a sign-in wall, an app-only page, no network), which the app can still
+     * keep among the trip's links. Anything else, a text file the import reads.
+     */
+    internal fun fromText(text: String, subject: String?): ShareItem {
+        val link = firstLink(text)
+        if (link != null) {
+            runCatching { return page(link, subject) }
+            return linkOnly(link, subject)
+        }
+        val firstLine = text.lineSequence().firstOrNull { it.isNotBlank() }?.trim() ?: text
+        return checked(ShareItem(ShareItem.Kind.TEXT, "shared-text.txt", "text/plain", text.toByteArray(), (subject ?: firstLine).take(80)))
+    }
+
+    /** The first http(s) link in a text, when the text is not much more than that link. */
+    internal fun firstLink(text: String): String? {
+        val match = Regex("https?://[^\\s<>\"]+").find(text) ?: return null
+        // A long mail body with a link in it is the booking itself, not a pointer to one.
+        return if (text.length - match.value.length <= 200) match.value.trimEnd('.', ',', ')', ']') else null
+    }
+
+    private fun page(link: String, subject: String?): ShareItem {
+        val connection = URL(link).openConnection() as HttpURLConnection
+        connection.connectTimeout = PAGE_TIMEOUT_MS
+        connection.readTimeout = PAGE_TIMEOUT_MS
+        connection.instanceFollowRedirects = true
+        connection.setRequestProperty("Accept", "text/html")
+        try {
+            val code = connection.responseCode
+            val type = connection.contentType.orEmpty()
+            if (code !in 200..299 || !type.contains("html")) throw ShareLoadException(ShareLoadException.Reason.UNSUPPORTED)
+            val data = connection.inputStream.use { readCapped(it) }
+            val html = String(data, Charsets.UTF_8)
+            val host = runCatching { Uri.parse(link).host }.getOrNull()
+            val title = pageTitle(html) ?: subject ?: host ?: "Page"
+            return checked(ShareItem(ShareItem.Kind.PAGE, "${slug(title)}.html", "text/html", data, title, host, link))
+        } finally {
+            connection.disconnect()
+        }
+    }
+
+    /** The link alone, as a text/uri-list the app recognises as nothing to read a booking from. */
+    internal fun linkOnly(link: String, subject: String?): ShareItem {
+        // java.net.URI rather than android.net.Uri: the same host, and readable in a JVM unit test.
+        val host = runCatching { java.net.URI(link).host }.getOrNull()
+        return ShareItem(ShareItem.Kind.PAGE, "link.url", "text/uri-list", link.toByteArray(), subject ?: host ?: link, host, link)
+    }
+
+    /** The kind and the MIME type the import should see, from the name when the type is vague. */
+    internal fun classify(name: String, mime: String): Pair<ShareItem.Kind, String> {
+        val ext = name.substringAfterLast('.', "").lowercase()
+        return when {
+            ext == "pkpass" || mime == "application/vnd.apple.pkpass" -> ShareItem.Kind.PASS to "application/vnd.apple.pkpass"
+            ext == "pdf" || mime == "application/pdf" -> ShareItem.Kind.PDF to "application/pdf"
+            ext == "eml" || mime == "message/rfc822" -> ShareItem.Kind.MAIL to "message/rfc822"
+            ext == "ics" || mime == "text/calendar" -> ShareItem.Kind.CALENDAR to "text/calendar"
+            ext == "html" || ext == "htm" || mime == "text/html" -> ShareItem.Kind.PAGE to "text/html"
+            mime.startsWith("image/") -> ShareItem.Kind.IMAGE to mime
+            ext == "txt" || mime == "text/plain" -> ShareItem.Kind.TEXT to "text/plain"
+            else -> ShareItem.Kind.FILE to mime
+        }
+    }
+
+    private fun withExtension(name: String, kind: ShareItem.Kind): String {
+        val ext = when (kind) {
+            ShareItem.Kind.PASS -> "pkpass"
+            ShareItem.Kind.PDF -> "pdf"
+            ShareItem.Kind.MAIL -> "eml"
+            ShareItem.Kind.CALENDAR -> "ics"
+            ShareItem.Kind.PAGE -> "html"
+            else -> return name
+        }
+        return if (name.lowercase().endsWith(".$ext")) name else "$name.$ext"
+    }
+
+    private fun displayName(uri: Uri, resolver: ContentResolver): String {
+        runCatching {
+            resolver.query(uri, arrayOf(OpenableColumns.DISPLAY_NAME), null, null, null)?.use {
+                if (it.moveToFirst() && !it.isNull(0)) return it.getString(0)
+            }
+        }
+        return uri.lastPathSegment?.substringAfterLast('/')?.ifBlank { null } ?: "booking"
+    }
+
+    private fun readCapped(input: InputStream): ByteArray {
+        val out = ByteArrayOutputStream()
+        val buffer = ByteArray(16 * 1024)
+        while (true) {
+            val read = input.read(buffer)
+            if (read < 0) break
+            out.write(buffer, 0, read)
+            if (out.size() > MAX_BYTES) throw ShareLoadException(ShareLoadException.Reason.TOO_LARGE)
+        }
+        return out.toByteArray()
+    }
+
+    private fun checked(item: ShareItem): ShareItem {
+        if (item.data.isEmpty()) throw ShareLoadException(ShareLoadException.Reason.UNSUPPORTED)
+        if (item.data.size > MAX_BYTES) throw ShareLoadException(ShareLoadException.Reason.TOO_LARGE)
+        return item
+    }
+
+    internal fun pageTitle(html: String): String? {
+        val match = Regex("<title[^>]*>(.*?)</title>", setOf(RegexOption.IGNORE_CASE, RegexOption.DOT_MATCHES_ALL)).find(html) ?: return null
+        return match.groupValues[1].trim().take(120).ifBlank { null }
+    }
+
+    internal fun slug(title: String): String {
+        val words = title.lowercase().split(Regex("[^\\p{L}\\p{N}]+")).filter { it.isNotEmpty() }
+        return words.take(8).joinToString("-").ifBlank { "page" }
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/share/TrekShortcuts.kt

@@ -0,0 +1,66 @@
+package com.liketrek.trek.share
+
+import android.content.Context
+import android.content.Intent
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.graphics.Rect
+import android.net.Uri
+import androidx.core.content.pm.ShortcutInfoCompat
+import androidx.core.content.pm.ShortcutManagerCompat
+import androidx.core.graphics.drawable.IconCompat
+import com.liketrek.trek.MainActivity
+import com.liketrek.trek.widget.WidgetArt
+import com.liketrek.trek.widget.WidgetSnapshot
+import com.liketrek.trek.widget.WidgetStore
+
+/**
+ * The trips as shortcuts: a long press on TREK's icon lists the coming ones and
+ * opens a trip straight away, and the system share sheet offers them as direct
+ * share targets, so a booking goes into its trip in one tap (ShareActivity
+ * reads the shortcut's id). Rebuilt whenever the app writes its trip list.
+ */
+object TrekShortcuts {
+    /** The category res/xml/shortcuts.xml's share-target names. */
+    const val SHARE_CATEGORY = "com.liketrek.trek.category.TRIP_SHARE"
+    private const val MAX = 4
+
+    fun publish(context: Context) {
+        val trips = ShareHandoff.trips(context).take(MAX)
+        val limit = ShortcutManagerCompat.getMaxShortcutCountPerActivity(context).coerceAtLeast(1)
+        val shortcuts = trips.take(limit).mapIndexed { rank, trip ->
+            val open = Intent(Intent.ACTION_VIEW, Uri.parse(WidgetSnapshot.link("/trips/${trip.id}")), context, MainActivity::class.java)
+            ShortcutInfoCompat.Builder(context, "trip.${trip.id}")
+                .setShortLabel(trip.title.take(24))
+                .setLongLabel(trip.title)
+                .setIcon(IconCompat.createWithAdaptiveBitmap(icon(trip)))
+                .setIntent(open)
+                .setCategories(setOf(SHARE_CATEGORY))
+                .setLongLived(true)
+                .setRank(rank)
+                .build()
+        }
+        runCatching {
+            // Trips no longer listed lose their shortcut; pinned ones stay but are disabled by the system.
+            val keep = shortcuts.map { it.id }.toSet()
+            val stale = ShortcutManagerCompat.getDynamicShortcuts(context).map { it.id }.filter { it !in keep }
+            if (stale.isNotEmpty()) ShortcutManagerCompat.removeLongLivedShortcuts(context, stale)
+            ShortcutManagerCompat.setDynamicShortcuts(context, shortcuts)
+        }
+    }
+
+    /** The trip's cover, else its own sky, cropped for an adaptive icon (108dp with a 72dp safe zone). */
+    private fun icon(trip: ShareHandoff.Trip): Bitmap {
+        val size = 216
+        val source = WidgetArt.cover(trip.cover, 432) ?: WidgetArt.sky(trip.title, size, size)
+        val out = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888)
+        val side = minOf(source.width, source.height)
+        val from = Rect((source.width - side) / 2, (source.height - side) / 2, (source.width + side) / 2, (source.height + side) / 2)
+        Canvas(out).drawBitmap(source, from, Rect(0, 0, size, size), Paint(Paint.FILTER_BITMAP_FLAG))
+        return out
+    }
+
+    /** Whether there is anything to publish: the app wrote a trip list. */
+    fun hasTrips(context: Context): Boolean = WidgetStore.trips(context).isNotEmpty()
+}

client/android/app/src/main/java/com/liketrek/trek/tiles/TrekTileStore.kt

@@ -0,0 +1,164 @@
+package com.liketrek.trek.tiles
+
+import android.content.Context
+import android.net.Uri
+import android.webkit.WebResourceRequest
+import android.webkit.WebResourceResponse
+import java.io.ByteArrayInputStream
+import java.io.File
+import java.net.HttpURLConnection
+import java.net.URL
+import java.security.MessageDigest
+
+/**
+ * The app's own store of Mapbox map resources, the counterpart of the iOS
+ * TrekTileStore (TrekBridgeViewController.swift).
+ *
+ * Android's WebView runs the server's service worker, which keeps every raster
+ * tile the user looked at. Mapbox's vector tiles, styles, sprites and glyphs it
+ * may not keep, but a device cache of what was viewed is allowed for 30 days,
+ * so the WebView client hands those requests here (TrekWebViewClient), and a
+ * Mapbox map keeps working offline for the places already seen. Nothing is
+ * prefetched; the store is pruned to [MAX_BYTES], least recently used first.
+ */
+object TrekTileStore {
+    const val MAX_AGE_MS = 30L * 24 * 60 * 60 * 1000
+    const val MAX_BYTES = 250L * 1024 * 1024
+    private const val PRUNE_TARGET = 0.8
+    private const val TIMEOUT_MS = 15_000
+    /** One resource is a tile, a style or a sprite sheet: far below this. */
+    private const val MAX_RESOURCE_BYTES = 8 * 1024 * 1024
+
+    private val HOST = Regex("^(api\\.mapbox\\.com|[a-z0-9-]+\\.tiles\\.mapbox\\.com)$", RegexOption.IGNORE_CASE)
+    /** What a map draws; telemetry, sessions and anything else go straight out. */
+    private val PATHS = listOf("/v4/", "/styles/", "/fonts/", "/models/", "/rasterarrays/", "/raster/")
+    private val DROPPED = setOf("access_token", "sku", "key", "api_key", "apikey")
+
+    @Volatile private var dir: File? = null
+    private var writesSincePrune = 0
+
+    fun init(context: Context) {
+        if (dir == null) dir = File(context.cacheDir, "tiles").apply { mkdirs() }
+    }
+
+    fun handles(request: WebResourceRequest): Boolean = request.method == "GET" && handles(request.url)
+
+    fun handles(url: Uri): Boolean = url.scheme == "https" && HOST.matches(url.host.orEmpty()) && PATHS.any { url.path.orEmpty().startsWith(it) }
+
+    /** The key of a resource: its URL without the credentials and the billing session, which change. */
+    fun key(url: Uri): String {
+        val builder = url.buildUpon().clearQuery()
+        url.queryParameterNames.filter { it.lowercase() !in DROPPED }.sorted().forEach { name ->
+            url.getQueryParameters(name).forEach { builder.appendQueryParameter(name, it) }
+        }
+        val digest = MessageDigest.getInstance("SHA-256").digest(builder.build().toString().toByteArray())
+        return digest.joinToString("") { "%02x".format(it) }
+    }
+
+    /**
+     * Answers a Mapbox request from the store when it is younger than 30 days,
+     * else from the network, keeping what came back. Null lets the WebView load
+     * it itself (no store, or the network failed).
+     */
+    fun serve(request: WebResourceRequest): WebResourceResponse? {
+        val root = dir ?: return null
+        val url = request.url
+        val key = key(url)
+        val body = File(root, "$key.bin")
+        val meta = File(root, "$key.type")
+        val now = System.currentTimeMillis()
+        if (body.exists() && now - created(meta) < MAX_AGE_MS) {
+            body.setLastModified(now)
+            val type = runCatching { meta.readLines().getOrNull(1) }.getOrNull() ?: "application/octet-stream"
+            return runCatching { response(body.readBytes(), type) }.getOrNull()
+        }
+        try {
+            val connection = URL(url.toString()).openConnection() as HttpURLConnection
+            connection.connectTimeout = TIMEOUT_MS
+            connection.readTimeout = TIMEOUT_MS
+            // The WebView's own headers go along: Mapbox checks a URL-restricted token
+            // against the Referer, and the server's origin is what the token allows.
+            for ((name, value) in forwardedHeaders(request.requestHeaders)) connection.setRequestProperty(name, value)
+            try {
+                val code = connection.responseCode
+                if (code == 200) {
+                    val bytes = connection.inputStream.use { it.readBytes() }
+                    if (bytes.size <= MAX_RESOURCE_BYTES) {
+                        val type = connection.contentType ?: "application/octet-stream"
+                        store(body, meta, bytes, type, now)
+                        return response(bytes, type)
+                    }
+                }
+                // Anything but a tile (401/403 for a token, 404, a 5xx) the WebView asks for
+                // itself, with everything a browser sends, and the map reports what it gets.
+            } finally {
+                connection.disconnect()
+            }
+        } catch (e: Exception) {
+            // Offline and never seen: the map shows the gap as it would in a browser.
+        }
+        return null
+    }
+
+    /** Headers that are the request's own; the connection sets the hop-by-hop ones itself. */
+    private val HOP_BY_HOP = setOf("connection", "keep-alive", "transfer-encoding", "te", "upgrade", "host", "content-length", "accept-encoding")
+
+    internal fun forwardedHeaders(headers: Map<String, String>?): Map<String, String> =
+        headers.orEmpty().filterKeys { it.lowercase() !in HOP_BY_HOP }
+
+    /** HttpURLConnection has already undone any gzip, so no Content-Encoding goes along. */
+    private fun response(bytes: ByteArray, type: String): WebResourceResponse {
+        val mime = type.substringBefore(';').trim()
+        val charset = Regex("charset=([^;]+)").find(type)?.groupValues?.get(1)
+        return WebResourceResponse(mime, charset, 200, "OK", cors(), ByteArrayInputStream(bytes))
+    }
+
+    /** The map fetches from the server's origin; the store's answer has to allow it as Mapbox's own does. */
+    private fun cors(): MutableMap<String, String> = mutableMapOf("Access-Control-Allow-Origin" to "*", "Cache-Control" to "no-store")
+
+    private fun created(meta: File): Long = runCatching { meta.readLines().first().toLong() }.getOrDefault(0L)
+
+    @Synchronized
+    private fun store(body: File, meta: File, bytes: ByteArray, type: String, now: Long) {
+        runCatching {
+            body.writeBytes(bytes)
+            meta.writeText("$now\n$type")
+        }
+        if (++writesSincePrune >= 200) {
+            writesSincePrune = 0
+            prune()
+        }
+    }
+
+    /** Drops what is past 30 days, then the least recently used while the store is over its limit. */
+    @Synchronized
+    fun prune() {
+        val root = dir ?: return
+        val now = System.currentTimeMillis()
+        val bodies = root.listFiles { f -> f.name.endsWith(".bin") }?.toMutableList() ?: return
+        bodies.filter { now - created(File(root, it.name.removeSuffix(".bin") + ".type")) > MAX_AGE_MS }.forEach {
+            remove(root, it)
+            bodies.remove(it)
+        }
+        var total = bodies.sumOf { it.length() }
+        if (total <= MAX_BYTES) return
+        val target = (MAX_BYTES * PRUNE_TARGET).toLong()
+        for (file in bodies.sortedBy { it.lastModified() }) {
+            if (total <= target) break
+            total -= file.length()
+            remove(root, file)
+        }
+    }
+
+    private fun remove(root: File, body: File) {
+        body.delete()
+        File(root, body.name.removeSuffix(".bin") + ".type").delete()
+    }
+
+    fun usage(): Long = dir?.listFiles()?.sumOf { it.length() } ?: 0L
+
+    @Synchronized
+    fun clear() {
+        dir?.listFiles()?.forEach { it.delete() }
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/tripday/TripDayNotification.kt

@@ -0,0 +1,146 @@
+package com.liketrek.trek.tripday
+
+import android.Manifest
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.os.Build
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.content.ContextCompat
+import androidx.core.graphics.drawable.IconCompat
+import com.liketrek.trek.MainActivity
+import com.liketrek.trek.R
+import com.liketrek.trek.widget.TrekIcons
+import com.liketrek.trek.widget.WidgetSnapshot
+import java.time.LocalDate
+import java.time.LocalTime
+import java.time.ZoneId
+
+/**
+ * The travel day as a Live Update, the Android counterpart of the iOS Live
+ * Activity (TripDayLiveActivity.swift): an ongoing notification with the next
+ * stop, its time as the status-bar chip and a countdown, and the day's stops as
+ * a segmented progress bar. Android 16 promotes it to the top of the shade and
+ * the lock screen (ProgressStyle, POST_PROMOTED_NOTIFICATIONS); older versions
+ * show the same content as a quiet ongoing notification with a plain bar.
+ *
+ * The UI starts, updates and ends it (TrekShell.syncTripDay / endTripDay), and
+ * it lapses on its own at midnight, so a forgotten one never lingers.
+ */
+object TripDayNotification {
+    const val CHANNEL = "tripday"
+    private const val ID = 0x7d1
+
+    data class State(
+        val tripTitle: String,
+        val path: String,
+        val dayLabel: String,
+        val nextName: String,
+        val nextTime: String?,
+        /** Minutes after midnight of the next stop, for the countdown. */
+        val nextMinutes: Int?,
+        val done: Int,
+        val total: Int,
+        /** #rrggbb of each stop, for the segments; may be empty. */
+        val colors: List<String?> = emptyList(),
+    )
+
+    fun ensureChannel(context: Context) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return
+        val manager = context.getSystemService(NotificationManager::class.java) ?: return
+        if (manager.getNotificationChannel(CHANNEL) != null) return
+        // Default importance: low would keep it out of the status bar chip and promotion.
+        val channel = NotificationChannel(CHANNEL, context.getString(R.string.push_channel_tripday), NotificationManager.IMPORTANCE_DEFAULT).apply {
+            description = context.getString(R.string.push_channel_tripday_description)
+            setSound(null, null)
+            enableVibration(false)
+            setShowBadge(false)
+        }
+        manager.createNotificationChannel(channel)
+    }
+
+    /** Whether it can be shown at all: notifications allowed, and the channel not switched off. */
+    fun allowed(context: Context): Boolean {
+        if (Build.VERSION.SDK_INT >= 33 &&
+            ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED
+        ) {
+            return false
+        }
+        val manager = NotificationManagerCompat.from(context)
+        if (!manager.areNotificationsEnabled()) return false
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val channel = context.getSystemService(NotificationManager::class.java)?.getNotificationChannel(CHANNEL)
+            if (channel != null && channel.importance == NotificationManager.IMPORTANCE_NONE) return false
+        }
+        return true
+    }
+
+    /** Shows the day, or updates the one showing. False when notifications are off. */
+    fun show(context: Context, state: State): Boolean {
+        ensureChannel(context)
+        if (!allowed(context)) return false
+        try {
+            NotificationManagerCompat.from(context).notify(ID, build(context, state))
+        } catch (e: SecurityException) {
+            return false
+        }
+        return true
+    }
+
+    fun end(context: Context) {
+        NotificationManagerCompat.from(context).cancel(ID)
+    }
+
+    fun build(context: Context, state: State, today: LocalDate = LocalDate.now()): android.app.Notification {
+        val open = Intent(Intent.ACTION_VIEW, Uri.parse(WidgetSnapshot.link(state.path)), context, MainActivity::class.java)
+            .addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
+        val tap = PendingIntent.getActivity(context, ID, open, PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE)
+        val zone = ZoneId.systemDefault()
+        val midnight = today.plusDays(1).atStartOfDay(zone).toInstant().toEpochMilli()
+        val remaining = (midnight - System.currentTimeMillis()).coerceAtLeast(60_000L)
+
+        val builder = NotificationCompat.Builder(context, CHANNEL)
+            .setSmallIcon(R.drawable.ic_stat_trek)
+            .setContentTitle(state.nextName)
+            .setContentText(listOfNotNull(state.nextTime, state.tripTitle).joinToString("  "))
+            .setSubText(state.dayLabel)
+            .setContentIntent(tap)
+            .setOngoing(true)
+            .setOnlyAlertOnce(true)
+            .setSilent(true)
+            .setCategory(NotificationCompat.CATEGORY_PROGRESS)
+            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+            .setTimeoutAfter(remaining)
+            .setRequestPromotedOngoing(true)
+
+        state.nextTime?.let { builder.setShortCriticalText(it) }
+        state.nextMinutes?.let { minutes ->
+            val at = today.atTime(LocalTime.of((minutes / 60).coerceIn(0, 23), minutes % 60)).atZone(zone).toInstant().toEpochMilli()
+            if (at > System.currentTimeMillis()) {
+                builder.setWhen(at).setShowWhen(true).setUsesChronometer(true).setChronometerCountDown(true)
+            }
+        }
+
+        val total = state.total.coerceAtLeast(1)
+        val done = state.done.coerceIn(0, total)
+        val style = NotificationCompat.ProgressStyle()
+            .setStyledByProgress(true)
+            .setProgressTrackerIcon(IconCompat.createWithBitmap(TrekIcons.bitmap(TrekIcons.vector("figure.walk"), 72, ContextCompat.getColor(context, R.color.notification_accent))))
+        for (i in 0 until total) {
+            val color = state.colors.getOrNull(i)?.let(::parseColor) ?: ContextCompat.getColor(context, R.color.tripday_segment)
+            style.addProgressSegment(NotificationCompat.ProgressStyle.Segment(1).setColor(color))
+        }
+        style.setProgress(done)
+        builder.setStyle(style)
+        // Before Android 16 the style falls back to nothing: the plain bar carries the progress.
+        if (Build.VERSION.SDK_INT < 36) builder.setProgress(total, done, false)
+        return builder.build()
+    }
+
+    private fun parseColor(css: String): Int? = runCatching { android.graphics.Color.parseColor(css) }.getOrNull()
+}

client/android/app/src/main/java/com/liketrek/trek/ui/TrekMaterialTheme.kt

@@ -0,0 +1,53 @@
+package com.liketrek.trek.ui
+
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+
+/**
+ * The theme of the app's own native screens (the share sheet, the widget's trip
+ * picker): Material You's wallpaper colours on Android 12 and later, TREK's
+ * neutral palette before that, light and dark with the system.
+ */
+@Composable
+fun TrekMaterialTheme(content: @Composable () -> Unit) {
+    val dark = isSystemInDarkTheme()
+    val context = LocalContext.current
+    val colors = when {
+        Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> if (dark) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        dark -> darkColorScheme(
+            primary = Color(0xFFE4E4E7),
+            onPrimary = Color(0xFF101013),
+            secondary = Color(0xFF8AAEF0),
+            secondaryContainer = Color(0xFF233250),
+            onSecondaryContainer = Color(0xFFDCE6FA),
+            surface = Color(0xFF0C0C0F),
+            surfaceContainerLow = Color(0xFF16161A),
+            surfaceContainer = Color(0xFF1B1B21),
+            surfaceContainerHigh = Color(0xFF232329),
+            onSurface = Color(0xFFF5F5F7),
+            onSurfaceVariant = Color(0xFF9C9CA3),
+        )
+        else -> lightColorScheme(
+            primary = Color(0xFF111827),
+            onPrimary = Color(0xFFFFFFFF),
+            secondary = Color(0xFF4A7DDB),
+            secondaryContainer = Color(0xFFE4EAF7),
+            onSecondaryContainer = Color(0xFF1B2F57),
+            surface = Color(0xFFFDFCF9),
+            surfaceContainerLow = Color(0xFFF4F2EE),
+            surfaceContainer = Color(0xFFEFEDE8),
+            surfaceContainerHigh = Color(0xFFE9E7E1),
+            onSurface = Color(0xFF101013),
+            onSurfaceVariant = Color(0xFF68686F),
+        )
+    }
+    MaterialTheme(colorScheme = colors, content = content)
+}

client/android/app/src/main/java/com/liketrek/trek/widget/TrekIcons.kt

@@ -0,0 +1,209 @@
+package com.liketrek.trek.widget
+
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Matrix
+import android.graphics.Paint
+import android.graphics.Path
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.AcUnit
+import androidx.compose.material.icons.rounded.AccountBalance
+import androidx.compose.material.icons.rounded.Backpack
+import androidx.compose.material.icons.rounded.BeachAccess
+import androidx.compose.material.icons.rounded.Bed
+import androidx.compose.material.icons.rounded.Bolt
+import androidx.compose.material.icons.rounded.Bookmark
+import androidx.compose.material.icons.rounded.CalendarMonth
+import androidx.compose.material.icons.rounded.CameraAlt
+import androidx.compose.material.icons.rounded.Chat
+import androidx.compose.material.icons.rounded.CheckCircle
+import androidx.compose.material.icons.rounded.Checklist
+import androidx.compose.material.icons.rounded.Cloud
+import androidx.compose.material.icons.rounded.CreditCard
+import androidx.compose.material.icons.rounded.DirectionsBoat
+import androidx.compose.material.icons.rounded.DirectionsBus
+import androidx.compose.material.icons.rounded.DirectionsCar
+import androidx.compose.material.icons.rounded.DirectionsRun
+import androidx.compose.material.icons.rounded.DirectionsWalk
+import androidx.compose.material.icons.rounded.Event
+import androidx.compose.material.icons.rounded.Favorite
+import androidx.compose.material.icons.rounded.FitnessCenter
+import androidx.compose.material.icons.rounded.Flag
+import androidx.compose.material.icons.rounded.Flight
+import androidx.compose.material.icons.rounded.FlightTakeoff
+import androidx.compose.material.icons.rounded.Dehaze
+import androidx.compose.material.icons.rounded.Forest
+import androidx.compose.material.icons.rounded.Grain
+import androidx.compose.material.icons.rounded.Group
+import androidx.compose.material.icons.rounded.Hiking
+import androidx.compose.material.icons.rounded.Home
+import androidx.compose.material.icons.rounded.Hotel
+import androidx.compose.material.icons.rounded.Landscape
+import androidx.compose.material.icons.rounded.LocalBar
+import androidx.compose.material.icons.rounded.LocalCafe
+import androidx.compose.material.icons.rounded.LocalHospital
+import androidx.compose.material.icons.rounded.LocalLibrary
+import androidx.compose.material.icons.rounded.Luggage
+import androidx.compose.material.icons.rounded.Map
+import androidx.compose.material.icons.rounded.MusicNote
+import androidx.compose.material.icons.rounded.Navigation
+import androidx.compose.material.icons.rounded.Park
+import androidx.compose.material.icons.rounded.Place
+import androidx.compose.material.icons.rounded.Poll
+import androidx.compose.material.icons.rounded.Public
+import androidx.compose.material.icons.rounded.Restaurant
+import androidx.compose.material.icons.rounded.Sailing
+import androidx.compose.material.icons.rounded.Schedule
+import androidx.compose.material.icons.rounded.ShoppingBag
+import androidx.compose.material.icons.rounded.Star
+import androidx.compose.material.icons.rounded.Storefront
+import androidx.compose.material.icons.rounded.Thunderstorm
+import androidx.compose.material.icons.rounded.TheaterComedy
+import androidx.compose.material.icons.rounded.ConfirmationNumber
+import androidx.compose.material.icons.rounded.Train
+import androidx.compose.material.icons.rounded.Water
+import androidx.compose.material.icons.rounded.WbCloudy
+import androidx.compose.material.icons.rounded.WbSunny
+import androidx.compose.material.icons.rounded.Cabin
+import androidx.compose.ui.graphics.asAndroidPath
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.graphics.vector.VectorGroup
+import androidx.compose.ui.graphics.vector.VectorNode
+import androidx.compose.ui.graphics.vector.VectorPath
+import androidx.compose.ui.graphics.vector.PathParser
+import androidx.glance.ImageProvider
+
+/**
+ * The widgets' icons: the Material Symbols (rounded) counterparts of the SF
+ * Symbols the snapshot names, so one snapshot draws on both platforms. A widget
+ * is RemoteViews, which cannot draw a Compose vector, so each icon is drawn
+ * once into a small white bitmap and tinted by the widget's theme colour.
+ */
+object TrekIcons {
+    /** The SF Symbol names client/src/native/widgetExtras.ts and widgets.ts use, and a few of the widgets' own. */
+    private val SYMBOLS: Map<String, ImageVector> = mapOf(
+        "airplane" to Icons.Rounded.Flight,
+        "airplane.departure" to Icons.Rounded.FlightTakeoff,
+        "tram.fill" to Icons.Rounded.Train,
+        "bus.fill" to Icons.Rounded.DirectionsBus,
+        "car.fill" to Icons.Rounded.DirectionsCar,
+        "ferry.fill" to Icons.Rounded.DirectionsBoat,
+        "sailboat.fill" to Icons.Rounded.Sailing,
+        "bed.double.fill" to Icons.Rounded.Hotel,
+        "house.fill" to Icons.Rounded.Home,
+        "tent.fill" to Icons.Rounded.Cabin,
+        "fork.knife" to Icons.Rounded.Restaurant,
+        "cup.and.saucer.fill" to Icons.Rounded.LocalCafe,
+        "mug.fill" to Icons.Rounded.LocalCafe,
+        "wineglass.fill" to Icons.Rounded.LocalBar,
+        "ticket.fill" to Icons.Rounded.ConfirmationNumber,
+        "theatermasks.fill" to Icons.Rounded.TheaterComedy,
+        "music.note" to Icons.Rounded.MusicNote,
+        "figure.hiking" to Icons.Rounded.Hiking,
+        "figure.walk" to Icons.Rounded.DirectionsWalk,
+        "figure.run" to Icons.Rounded.DirectionsRun,
+        "dumbbell.fill" to Icons.Rounded.FitnessCenter,
+        "bookmark.fill" to Icons.Rounded.Bookmark,
+        "building.columns.fill" to Icons.Rounded.AccountBalance,
+        "building.2.fill" to Icons.Rounded.AccountBalance,
+        "books.vertical.fill" to Icons.Rounded.LocalLibrary,
+        "storefront.fill" to Icons.Rounded.Storefront,
+        "bag.fill" to Icons.Rounded.ShoppingBag,
+        "backpack.fill" to Icons.Rounded.Backpack,
+        "suitcase.rolling.fill" to Icons.Rounded.Luggage,
+        "creditcard.fill" to Icons.Rounded.CreditCard,
+        "cross.case.fill" to Icons.Rounded.LocalHospital,
+        "camera.fill" to Icons.Rounded.CameraAlt,
+        "camera.macro" to Icons.Rounded.Park,
+        "leaf.fill" to Icons.Rounded.Park,
+        "tree.fill" to Icons.Rounded.Forest,
+        "mountain.2.fill" to Icons.Rounded.Landscape,
+        "water.waves" to Icons.Rounded.Water,
+        "beach.umbrella.fill" to Icons.Rounded.BeachAccess,
+        "sun.max.fill" to Icons.Rounded.WbSunny,
+        "bolt.fill" to Icons.Rounded.Bolt,
+        "heart.fill" to Icons.Rounded.Favorite,
+        "star.fill" to Icons.Rounded.Star,
+        "flag.fill" to Icons.Rounded.Flag,
+        "map.fill" to Icons.Rounded.Map,
+        "safari.fill" to Icons.Rounded.Navigation,
+        "location.north.fill" to Icons.Rounded.Navigation,
+        "location.fill" to Icons.Rounded.Place,
+        "globe.europe.africa.fill" to Icons.Rounded.Public,
+        "calendar" to Icons.Rounded.CalendarMonth,
+        "clock" to Icons.Rounded.Schedule,
+        "checklist" to Icons.Rounded.Checklist,
+        "checkmark.circle.fill" to Icons.Rounded.CheckCircle,
+        "person.2.fill" to Icons.Rounded.Group,
+        "bubble.left.fill" to Icons.Rounded.Chat,
+        "chart.bar.fill" to Icons.Rounded.Poll,
+        "event" to Icons.Rounded.Event,
+    )
+
+    /** A booking kind's symbol and colour, the same pairs as TrekStyle.swift. */
+    fun booking(kind: String): Pair<String, Int> = when (kind) {
+        "flight" -> "airplane" to 0xFF4A7DDB.toInt()
+        "train" -> "tram.fill" to 0xFF2FA37A.toInt()
+        "bus" -> "bus.fill" to 0xFF2BA6A6.toInt()
+        "car" -> "car.fill" to 0xFFD6673B.toInt()
+        "cruise", "ferry", "boat" -> "ferry.fill" to 0xFF2E8BC0.toInt()
+        "hotel" -> "bed.double.fill" to 0xFF8E6CD9.toInt()
+        "restaurant" -> "fork.knife" to 0xFFE8A13A.toInt()
+        "event" -> "ticket.fill" to 0xFFD6408B.toInt()
+        "tour" -> "figure.hiking" to 0xFF4E9F3D.toInt()
+        else -> "bookmark.fill" to 0xFF7A7A85.toInt()
+    }
+
+    /** The provider's main weather condition as an icon. */
+    fun weather(main: String): ImageVector = when (main.lowercase()) {
+        "clear" -> Icons.Rounded.WbSunny
+        "clouds" -> Icons.Rounded.WbCloudy
+        "rain", "drizzle" -> Icons.Rounded.Grain
+        "thunderstorm" -> Icons.Rounded.Thunderstorm
+        "snow" -> Icons.Rounded.AcUnit
+        "mist", "fog", "haze" -> Icons.Rounded.Dehaze
+        else -> Icons.Rounded.Cloud
+    }
+
+    fun vector(symbol: String?): ImageVector = symbol?.let { SYMBOLS[it] } ?: Icons.Rounded.Place
+
+    private val cache = HashMap<Pair<ImageVector, Int>, Bitmap>()
+
+    /** The icon as a white bitmap of [sizePx], tinted where it is drawn. */
+    @Synchronized
+    fun bitmap(vector: ImageVector, sizePx: Int = 48): Bitmap = cache.getOrPut(vector to sizePx) { render(vector, sizePx) }
+
+    fun provider(symbol: String?, sizePx: Int = 48): ImageProvider = ImageProvider(bitmap(vector(symbol), sizePx))
+
+    fun provider(vector: ImageVector, sizePx: Int = 48): ImageProvider = ImageProvider(bitmap(vector, sizePx))
+
+    /** The icon in [color], for places that draw it as it is (a notification's progress tracker). */
+    fun bitmap(vector: ImageVector, sizePx: Int, color: Int): Bitmap = render(vector, sizePx, color)
+
+    private fun render(vector: ImageVector, sizePx: Int, color: Int = android.graphics.Color.WHITE): Bitmap {
+        val bitmap = Bitmap.createBitmap(sizePx, sizePx, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        val scale = Matrix().apply { setScale(sizePx / vector.viewportWidth, sizePx / vector.viewportHeight) }
+        val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+            this.color = color
+            style = Paint.Style.FILL
+        }
+        fun draw(node: VectorNode) {
+            when (node) {
+                is VectorGroup -> node.forEach { draw(it) }
+                is VectorPath -> {
+                    val path: Path = PathParser().addPathNodes(node.pathData).toPath().asAndroidPath()
+                    path.fillType = if (node.pathFillType == androidx.compose.ui.graphics.PathFillType.EvenOdd) {
+                        Path.FillType.EVEN_ODD
+                    } else {
+                        Path.FillType.WINDING
+                    }
+                    path.transform(scale)
+                    canvas.drawPath(path, paint)
+                }
+            }
+        }
+        draw(vector.root)
+        return bitmap
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/TrekWidgetReceivers.kt

@@ -0,0 +1,100 @@
+package com.liketrek.trek.widget
+
+import android.content.Context
+import android.os.Build
+import androidx.glance.appwidget.GlanceAppWidget
+import androidx.glance.appwidget.GlanceAppWidgetManager
+import androidx.glance.appwidget.GlanceAppWidgetReceiver
+import androidx.glance.appwidget.updateAll
+import kotlin.reflect.KClass
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+
+/** The widget providers the manifest lists, one per widget in the picker. */
+abstract class TrekWidgetReceiver : GlanceAppWidgetReceiver() {
+    override fun onDeleted(context: Context, appWidgetIds: IntArray) {
+        super.onDeleted(context, appWidgetIds)
+        WidgetStore.forget(context, appWidgetIds)
+    }
+}
+
+class TripWidgetReceiver : TrekWidgetReceiver() {
+    override val glanceAppWidget: GlanceAppWidget = TripWidget()
+}
+
+class TodayWidgetReceiver : TrekWidgetReceiver() {
+    override val glanceAppWidget: GlanceAppWidget = TodayWidget()
+}
+
+class BookingsWidgetReceiver : TrekWidgetReceiver() {
+    override val glanceAppWidget: GlanceAppWidget = BookingsWidget()
+}
+
+class TodosWidgetReceiver : TrekWidgetReceiver() {
+    override val glanceAppWidget: GlanceAppWidget = TodosWidget()
+}
+
+class PackingWidgetReceiver : TrekWidgetReceiver() {
+    override val glanceAppWidget: GlanceAppWidget = PackingWidget()
+}
+
+class AtlasWidgetReceiver : TrekWidgetReceiver() {
+    override val glanceAppWidget: GlanceAppWidget = AtlasWidget()
+}
+
+class CollabWidgetReceiver : TrekWidgetReceiver() {
+    override val glanceAppWidget: GlanceAppWidget = CollabWidget()
+}
+
+/** Redraws every placed TREK widget after the app wrote a new snapshot. */
+object TrekWidgetUpdater {
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+
+    val receivers: List<KClass<out GlanceAppWidgetReceiver>> = listOf(
+        TripWidgetReceiver::class,
+        TodayWidgetReceiver::class,
+        BookingsWidgetReceiver::class,
+        TodosWidgetReceiver::class,
+        PackingWidgetReceiver::class,
+        AtlasWidgetReceiver::class,
+        CollabWidgetReceiver::class,
+    )
+
+    /** The widget a placed widget id belongs to, by its provider. */
+    fun widgetFor(context: Context, appWidgetId: Int): GlanceAppWidget? {
+        val provider = android.appwidget.AppWidgetManager.getInstance(context).getAppWidgetInfo(appWidgetId)?.provider?.className
+            ?: return null
+        val receiver = receivers.firstOrNull { it.java.name == provider } ?: return null
+        return receiver.java.getDeclaredConstructor().newInstance().glanceAppWidget
+    }
+
+    fun widgets(): List<GlanceAppWidget> =
+        listOf(TripWidget(), TodayWidget(), BookingsWidget(), TodosWidget(), PackingWidget(), AtlasWidget(), CollabWidget())
+
+    @JvmStatic
+    fun refreshAll(context: Context) {
+        val app = context.applicationContext
+        scope.launch { for (widget in widgets()) runCatching { widget.updateAll(app) } }
+    }
+
+    /**
+     * Android 15's widget picker shows a live preview drawn by the widget itself
+     * (providePreview) instead of a static image. The system rate-limits the
+     * call, so it runs once per app version.
+     */
+    @JvmStatic
+    fun publishPreviews(context: Context) {
+        if (Build.VERSION.SDK_INT < 35) return
+        val app = context.applicationContext
+        val prefs = app.getSharedPreferences("trek.widgets", Context.MODE_PRIVATE)
+        val version = runCatching { app.packageManager.getPackageInfo(app.packageName, 0).lastUpdateTime }.getOrDefault(0L)
+        if (prefs.getLong("previews", -1L) == version) return
+        scope.launch {
+            val manager = GlanceAppWidgetManager(app)
+            val all = receivers.all { runCatching { manager.setWidgetPreviews(it); true }.getOrDefault(false) }
+            if (all) prefs.edit().putLong("previews", version).apply()
+        }
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/TrekWidgets.kt

@@ -0,0 +1,815 @@
+package com.liketrek.trek.widget
+
+import android.content.Context
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.CalendarMonth
+import androidx.compose.material.icons.rounded.CheckCircle
+import androidx.compose.material.icons.rounded.Flight
+import androidx.compose.material.icons.rounded.Group
+import androidx.compose.material.icons.rounded.Luggage
+import androidx.compose.material.icons.rounded.Place
+import androidx.compose.material.icons.rounded.Public
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.unit.DpSize
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.glance.ColorFilter
+import androidx.glance.GlanceId
+import androidx.glance.GlanceModifier
+import androidx.glance.GlanceTheme
+import androidx.glance.Image
+import androidx.glance.ImageProvider
+import androidx.glance.LocalContext
+import androidx.glance.LocalSize
+import androidx.glance.action.clickable
+import androidx.glance.appwidget.GlanceAppWidget
+import androidx.glance.appwidget.GlanceAppWidgetManager
+import androidx.glance.appwidget.SizeMode
+import androidx.glance.appwidget.cornerRadius
+import androidx.glance.appwidget.provideContent
+import androidx.glance.background
+import androidx.glance.layout.Alignment
+import androidx.glance.layout.Box
+import androidx.glance.layout.Column
+import androidx.glance.layout.ColumnScope
+import androidx.glance.layout.ContentScale
+import androidx.glance.layout.Row
+import androidx.glance.layout.Spacer
+import androidx.glance.layout.fillMaxHeight
+import androidx.glance.layout.fillMaxSize
+import androidx.glance.layout.fillMaxWidth
+import androidx.glance.layout.height
+import androidx.glance.layout.padding
+import androidx.glance.layout.size
+import androidx.glance.layout.width
+import androidx.glance.text.FontWeight
+import androidx.glance.text.Text
+import androidx.glance.text.TextAlign
+import androidx.glance.text.TextStyle
+import androidx.glance.unit.ColorProvider
+import java.time.LocalDate
+
+/** The sizes every TREK widget lays itself out for (a 2x2, a 4x2 and a 4x4 cell block). */
+object TrekSizes {
+    val SMALL = DpSize(120.dp, 120.dp)
+    val WIDE = DpSize(250.dp, 120.dp)
+    val LARGE = DpSize(250.dp, 260.dp)
+    val all = setOf(SMALL, WIDE, LARGE)
+}
+
+private val DpSize.isWide get() = width >= 220.dp
+private val DpSize.isTall get() = height >= 220.dp
+
+/**
+ * A TREK widget: reads the snapshot of the trip it is set to (WidgetStore) and
+ * draws [Content]. The app writes the snapshot and refreshes the widgets
+ * (TrekWidgetUpdater); [preview] draws the same views from a sample trip for
+ * the widget picker and the screenshot tests.
+ */
+abstract class TrekWidget : GlanceAppWidget() {
+    override val sizeMode: SizeMode = SizeMode.Responsive(TrekSizes.all)
+    override val previewSizeMode = SizeMode.Responsive(TrekSizes.all)
+
+    /** Whether the widget shows one trip, so the trip picker applies to it. */
+    open val perTrip: Boolean = true
+
+    override suspend fun provideGlance(context: Context, id: GlanceId) {
+        val appWidgetId = runCatching { GlanceAppWidgetManager(context).getAppWidgetId(id) }.getOrDefault(-1)
+        provideContent {
+            // Read inside the composition: a session outlives one update, and every
+            // write (the dashboard's, then each trip's) must reach it.
+            val version by WidgetStore.version.collectAsState()
+            val snapshot = remember(version) {
+                val tripId = if (perTrip && appWidgetId >= 0) WidgetStore.tripFor(context, appWidgetId) else WidgetStore.AUTO
+                WidgetStore.load(context, tripId)
+            }
+            TrekWidgetTheme.Themed { Content(snapshot) }
+        }
+    }
+
+    override suspend fun providePreview(context: Context, widgetCategory: Int) {
+        provideContent { TrekWidgetTheme.Themed { Content(WidgetSamples.snapshot(running = false)) } }
+    }
+
+    @Composable
+    abstract fun Content(snapshot: WidgetSnapshot?)
+}
+
+// ---- Trip ----
+
+/** The trip: a countdown on its own cover before it starts, the day and what comes next while it runs. */
+class TripWidget : TrekWidget() {
+    @Composable
+    override fun Content(snapshot: WidgetSnapshot?) {
+        val context = LocalContext.current
+        val trip = snapshot?.trip
+        if (snapshot == null || trip == null) {
+            EmptyWidget(snapshot?.labels?.noTrip ?: WidgetSamples.emptyText(context))
+            return
+        }
+        val size = LocalSize.current
+        WidgetFrame(onClick = openPath(context, trip.path), background = TrekStatus.scrim, padding = 0.dp) {
+            Box(modifier = GlanceModifier.fillMaxSize()) {
+                Image(
+                    provider = ImageProvider(WidgetArt.cover(trip.cover) ?: WidgetArt.sky(trip.title)),
+                    contentDescription = null,
+                    contentScale = ContentScale.Crop,
+                    modifier = GlanceModifier.fillMaxSize(),
+                )
+                Image(
+                    provider = ImageProvider(com.liketrek.trek.R.drawable.widget_scrim),
+                    contentDescription = null,
+                    contentScale = ContentScale.FillBounds,
+                    modifier = GlanceModifier.fillMaxSize(),
+                )
+                Column(modifier = GlanceModifier.fillMaxSize().padding(14.dp)) {
+                    val today = snapshot.today
+                    if (today != null) Running(snapshot, trip, today, size) else Upcoming(snapshot, trip, size)
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun ColumnScope.Upcoming(snapshot: WidgetSnapshot, trip: WidgetSnapshot.Trip, size: DpSize) {
+        val context = LocalContext.current
+        val labels = snapshot.labels
+        val days = (snapshot.daysUntilStart() ?: 0L).coerceAtLeast(0L)
+        if (!size.isWide) {
+            // Small: the number carries it, with the trip's name under it.
+            Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+                Icon(Icons.Rounded.Flight, TrekStatus.white, 16.dp)
+                Spacer(GlanceModifier.defaultWeight())
+                snapshot.weather?.let { WeatherChip(it, onPhoto = true) }
+            }
+            Spacer(GlanceModifier.defaultWeight())
+            Countdown(days, labels, ring = false)
+            Line(trip.title, 14.sp, TrekStatus.white, FontWeight.Bold, maxLines = 1)
+            return
+        }
+        Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+            Column(modifier = GlanceModifier.defaultWeight()) {
+                Eyebrow(labels.nextTrip, TrekStatus.whiteMuted)
+                Spacer(GlanceModifier.height(2.dp))
+                Line(trip.title, if (size.isTall) 22.sp else 18.sp, TrekStatus.white, FontWeight.Bold, maxLines = 2)
+                trip.place?.let {
+                    Row(verticalAlignment = Alignment.CenterVertically) {
+                        Icon(Icons.Rounded.Place, TrekStatus.whiteMuted, 12.dp)
+                        Spacer(GlanceModifier.width(3.dp))
+                        Line(it, 12.sp, TrekStatus.whiteMuted, FontWeight.Medium)
+                    }
+                }
+                if (size.isTall) {
+                    RelativeDay.range(context, trip.start, trip.end)?.let {
+                        Spacer(GlanceModifier.height(6.dp))
+                        Chip(it, TrekStatus.glass, TrekStatus.white, TrekIcons.provider(Icons.Rounded.CalendarMonth), TrekStatus.white)
+                    }
+                }
+            }
+            Spacer(GlanceModifier.width(10.dp))
+            Countdown(days, labels, ring = true)
+        }
+        if (size.isTall) {
+            Spacer(GlanceModifier.defaultWeight())
+            TripFacts(snapshot, onPhoto = true)
+            snapshot.bookings.firstOrNull()?.let {
+                Spacer(GlanceModifier.height(8.dp))
+                BookingRow(it, labels, onPhoto = true)
+            }
+        }
+    }
+
+    /** The days to go: a big number, or today and tomorrow in words; around a ring of the last 60 days on the wide sizes. */
+    @Composable
+    private fun Countdown(days: Long, labels: WidgetSnapshot.Labels, ring: Boolean) {
+        val number: @Composable () -> Unit = {
+            when (days) {
+                0L -> Line(labels.todayShort, 26.sp, TrekStatus.white, FontWeight.Bold)
+                1L -> Line(labels.tomorrow, 20.sp, TrekStatus.white, FontWeight.Bold)
+                else -> if (ring) {
+                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                        Text(
+                            text = days.toString(),
+                            style = TextStyle(color = TrekStatus.white, fontSize = if (days > 99) 22.sp else 28.sp, fontWeight = FontWeight.Bold),
+                            maxLines = 1,
+                        )
+                        Eyebrow(labels.days, TrekStatus.whiteMuted)
+                    }
+                } else {
+                    Row(verticalAlignment = Alignment.Bottom) {
+                        Text(days.toString(), style = TextStyle(color = TrekStatus.white, fontSize = 34.sp, fontWeight = FontWeight.Bold), maxLines = 1)
+                        Spacer(GlanceModifier.width(4.dp))
+                        Line(labels.days, 13.sp, TrekStatus.whiteMuted, FontWeight.Bold, modifier = GlanceModifier.padding(bottom = 6.dp))
+                    }
+                }
+            }
+        }
+        if (!ring) {
+            number()
+            return
+        }
+        val progress = 1f - (days.coerceAtMost(60L).toFloat() / 60f)
+        Box(modifier = GlanceModifier.size(84.dp), contentAlignment = Alignment.Center) {
+            Image(
+                provider = ImageProvider(WidgetArt.ring(progress)),
+                contentDescription = null,
+                colorFilter = ColorFilter.tint(TrekStatus.white),
+                modifier = GlanceModifier.fillMaxSize(),
+            )
+            number()
+        }
+    }
+
+    @Composable
+    private fun ColumnScope.Running(snapshot: WidgetSnapshot, trip: WidgetSnapshot.Trip, today: WidgetSnapshot.Today, size: DpSize) {
+        val labels = snapshot.labels
+        val now = nowMinutes()
+        val next = today.stops.firstOrNull { (it.minutes ?: -1) >= now } ?: today.stops.lastOrNull()
+        val index = today.index ?: 1
+        val total = today.total ?: snapshot.tripLength ?: 1
+        Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+            Eyebrow(if (size.isWide) trip.title else today.dayLabel, TrekStatus.whiteMuted, GlanceModifier.defaultWeight())
+            snapshot.weather?.let { WeatherChip(it, onPhoto = true) }
+        }
+        if (size.isWide) Line(today.dayLabel, 20.sp, TrekStatus.white, FontWeight.Bold, modifier = GlanceModifier.padding(top = 2.dp))
+        Spacer(GlanceModifier.height(8.dp))
+        DaySegments(index, total, TrekStatus.white)
+        Spacer(GlanceModifier.defaultWeight())
+        if (size.isWide) {
+            Column(modifier = GlanceModifier.fillMaxWidth().background(TrekStatus.glass).cornerRadius(16.dp).padding(10.dp)) {
+                StopList(today.stops, now, limit = if (size.isTall) 5 else 1, onPhoto = true, nothing = labels.nothingPlanned, nowLabel = labels.now)
+            }
+        } else if (next != null) {
+            Line(next.time ?: labels.today, 26.sp, TrekStatus.white, FontWeight.Bold)
+            Line(next.name, 14.sp, TrekStatus.white, FontWeight.Bold, maxLines = 2)
+        } else {
+            Line(labels.nothingPlanned, 14.sp, TrekStatus.white, FontWeight.Bold, maxLines = 3)
+        }
+    }
+}
+
+/** The trip's numbers: days, places, travellers. */
+@Composable
+private fun TripFacts(snapshot: WidgetSnapshot, onPhoto: Boolean) {
+    val labels = snapshot.labels
+    val facts = listOfNotNull(
+        snapshot.tripLength?.let { it to labels.days },
+        snapshot.trip?.placeCount?.let { it to labels.places },
+        snapshot.trip?.memberCount?.let { it to labels.travellers },
+    )
+    Row(modifier = GlanceModifier.fillMaxWidth()) {
+        facts.forEachIndexed { i, (value, label) ->
+            Column(
+                modifier = GlanceModifier.defaultWeight().background(if (onPhoto) TrekStatus.glass else GlanceTheme.colors.secondaryContainer)
+                    .cornerRadius(14.dp).padding(horizontal = 10.dp, vertical = 6.dp),
+            ) {
+                Line(value.toString(), 18.sp, if (onPhoto) TrekStatus.white else GlanceTheme.colors.onSecondaryContainer, FontWeight.Bold)
+                Line(label, 11.sp, if (onPhoto) TrekStatus.whiteMuted else GlanceTheme.colors.onSecondaryContainer)
+            }
+            if (i < facts.size - 1) Spacer(GlanceModifier.width(6.dp))
+        }
+    }
+}
+
+// ---- Today ----
+
+/** Today's plan as a timeline, with the weather and what is next. */
+class TodayWidget : TrekWidget() {
+    @Composable
+    override fun Content(snapshot: WidgetSnapshot?) {
+        val context = LocalContext.current
+        val size = LocalSize.current
+        val labels = snapshot?.labels
+        val today = snapshot?.today
+        val trip = snapshot?.trip
+        if (snapshot == null || labels == null || trip == null) {
+            EmptyWidget(labels?.noTrip ?: WidgetSamples.emptyText(context))
+            return
+        }
+        WidgetFrame(onClick = openPath(context, trip.path)) {
+            Column(modifier = GlanceModifier.fillMaxSize()) {
+                Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+                    Column(modifier = GlanceModifier.defaultWeight()) {
+                        if (size.isTall) Eyebrow(if (today != null) labels.today else labels.nextTrip, GlanceTheme.colors.primary)
+                        Line(today?.dayLabel ?: trip.title, if (size.isWide) 17.sp else 14.sp, weight = FontWeight.Bold)
+                    }
+                    snapshot.weather?.let { WeatherChip(it, onPhoto = false) }
+                }
+                Spacer(GlanceModifier.height(if (size.isTall) 10.dp else 6.dp))
+                if (today == null || today.stops.isEmpty()) {
+                    Spacer(GlanceModifier.defaultWeight())
+                    val days = snapshot.daysUntilStart()
+                    val text = if (today == null && days != null && days > 0) labels.inDays.replace("{n}", days.toString()) else labels.nothingPlanned
+                    Line(text, 14.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Medium, maxLines = 3)
+                    Spacer(GlanceModifier.defaultWeight())
+                } else {
+                    val limit = when {
+                        size.isTall -> 6
+                        size.isWide -> 2
+                        else -> 1
+                    }
+                    StopList(today.stops, nowMinutes(), limit, onPhoto = false, nothing = labels.nothingPlanned, nowLabel = labels.now, compact = !size.isWide)
+                }
+            }
+        }
+    }
+}
+
+/** The stops from the next one on, at most [limit], the next one marked. */
+@Composable
+fun StopList(
+    stops: List<WidgetSnapshot.Stop>,
+    nowMinutes: Int,
+    limit: Int,
+    onPhoto: Boolean,
+    nothing: String,
+    nowLabel: String,
+    compact: Boolean = false,
+) {
+    if (stops.isEmpty()) {
+        Line(nothing, 13.sp, if (onPhoto) TrekStatus.white else GlanceTheme.colors.onSurfaceVariant)
+        return
+    }
+    val nextIndex = stops.indexOfFirst { (it.minutes ?: -1) >= nowMinutes }.let { if (it < 0) stops.size - 1 else it }
+    // Keep the last done stop in view when there is room, so the day reads as a line.
+    val from = (nextIndex - if (limit > 3) 1 else 0).coerceIn(0, (stops.size - limit).coerceAtLeast(0))
+    val shown = stops.drop(from).take(limit)
+    shown.forEachIndexed { i, stop ->
+        val index = from + i
+        val isNext = index == nextIndex
+        val done = index < nextIndex
+        val ink = when {
+            onPhoto -> if (done) TrekStatus.whiteFaint else TrekStatus.white
+            done -> GlanceTheme.colors.onSurfaceVariant
+            else -> GlanceTheme.colors.onSurface
+        }
+        Row(modifier = GlanceModifier.fillMaxWidth().padding(vertical = 3.dp), verticalAlignment = Alignment.CenterVertically) {
+            val accent = cssColor(stop.color) ?: if (onPhoto) TrekStatus.white else GlanceTheme.colors.primary
+            if (compact) {
+                Box(modifier = GlanceModifier.size(8.dp).cornerRadius(4.dp).background(accent)) {}
+            } else {
+                IconBadge(
+                    stop.symbol,
+                    tint = if (onPhoto) TrekStatus.white else GlanceTheme.colors.onSecondaryContainer,
+                    background = if (onPhoto) TrekStatus.glass else GlanceTheme.colors.secondaryContainer,
+                    size = 26.dp,
+                )
+            }
+            Spacer(GlanceModifier.width(8.dp))
+            Column(modifier = GlanceModifier.defaultWeight()) {
+                Line(stop.name, 13.sp, ink, if (isNext) FontWeight.Bold else FontWeight.Medium)
+                if (compact && stop.time != null) Line(stop.time, 11.sp, if (onPhoto) TrekStatus.whiteMuted else GlanceTheme.colors.onSurfaceVariant)
+            }
+            if (!compact) {
+                if (isNext && !onPhoto) {
+                    Chip(stop.time ?: nowLabel, GlanceTheme.colors.primary, GlanceTheme.colors.onPrimary)
+                } else {
+                    Line(stop.time ?: "", 12.sp, ink, if (isNext) FontWeight.Bold else FontWeight.Normal)
+                }
+            }
+        }
+    }
+}
+
+// ---- Bookings ----
+
+/** The next flights, trains, hotels and tables, and when they are due. */
+class BookingsWidget : TrekWidget() {
+    @Composable
+    override fun Content(snapshot: WidgetSnapshot?) {
+        val context = LocalContext.current
+        val size = LocalSize.current
+        val labels = snapshot?.labels ?: return EmptyWidget(WidgetSamples.emptyText(context))
+        val bookings = snapshot.bookings
+        WidgetFrame(onClick = openPath(context, bookings.firstOrNull()?.path ?: snapshot.trip?.path ?: "/")) {
+            Column(modifier = GlanceModifier.fillMaxSize()) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Icon(Icons.Rounded.Flight, GlanceTheme.colors.primary, 14.dp)
+                    Spacer(GlanceModifier.width(5.dp))
+                    Eyebrow(labels.bookings, GlanceTheme.colors.primary)
+                }
+                Spacer(GlanceModifier.height(8.dp))
+                if (bookings.isEmpty()) {
+                    Spacer(GlanceModifier.defaultWeight())
+                    Line(labels.noBookings, 14.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Medium, maxLines = 2)
+                    Spacer(GlanceModifier.defaultWeight())
+                } else if (!size.isWide) {
+                    val first = bookings.first()
+                    val (symbol, color) = TrekIcons.booking(first.kind)
+                    IconBadge(symbol, TrekStatus.white, ColorProvider(androidx.compose.ui.graphics.Color(color)), 30.dp)
+                    Spacer(GlanceModifier.defaultWeight())
+                    Line(first.title, 14.sp, weight = FontWeight.Bold, maxLines = 1)
+                    Line(
+                        listOfNotNull(RelativeDay.label(first.date, labels), first.time).joinToString(", "),
+                        12.sp,
+                        GlanceTheme.colors.onSurfaceVariant,
+                    )
+                } else {
+                    val limit = if (size.isTall) 4 else 1
+                    bookings.take(limit).forEach { booking ->
+                        BookingRow(booking, labels, onPhoto = false)
+                        Spacer(GlanceModifier.height(5.dp))
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun BookingRow(booking: WidgetSnapshot.Booking, labels: WidgetSnapshot.Labels, onPhoto: Boolean) {
+    val context = LocalContext.current
+    val (symbol, color) = TrekIcons.booking(booking.kind)
+    Row(
+        modifier = GlanceModifier.fillMaxWidth()
+            .background(if (onPhoto) TrekStatus.glass else GlanceTheme.colors.surfaceVariant)
+            .cornerRadius(14.dp).padding(horizontal = 8.dp, vertical = 6.dp)
+            .clickable(openPath(context, booking.path)),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        IconBadge(symbol, TrekStatus.white, ColorProvider(androidx.compose.ui.graphics.Color(color)), 30.dp)
+        Spacer(GlanceModifier.width(10.dp))
+        Column(modifier = GlanceModifier.defaultWeight()) {
+            Line(booking.title, 13.sp, if (onPhoto) TrekStatus.white else GlanceTheme.colors.onSurface, FontWeight.Bold)
+            booking.detail?.let { Line(it, 11.sp, if (onPhoto) TrekStatus.whiteMuted else GlanceTheme.colors.onSurfaceVariant) }
+        }
+        Spacer(GlanceModifier.width(6.dp))
+        Column(horizontalAlignment = Alignment.End) {
+            RelativeDay.label(booking.date, labels)?.let { Line(it, 12.sp, if (onPhoto) TrekStatus.white else GlanceTheme.colors.onSurface, FontWeight.Bold) }
+            Row(verticalAlignment = Alignment.CenterVertically) {
+                Box(modifier = GlanceModifier.size(6.dp).cornerRadius(3.dp).background(if (booking.confirmed) TrekStatus.confirmed else TrekStatus.pending)) {}
+                Spacer(GlanceModifier.width(4.dp))
+                Line(booking.time ?: if (booking.confirmed) labels.confirmed else labels.pending, 11.sp, if (onPhoto) TrekStatus.whiteMuted else GlanceTheme.colors.onSurfaceVariant)
+            }
+        }
+    }
+}
+
+// ---- To-dos ----
+
+/** What is still open for the trip, and how far the packing has come. */
+class TodosWidget : TrekWidget() {
+    @Composable
+    override fun Content(snapshot: WidgetSnapshot?) {
+        val context = LocalContext.current
+        val size = LocalSize.current
+        val labels = snapshot?.labels ?: return EmptyWidget(WidgetSamples.emptyText(context))
+        val todos = snapshot.todos
+        WidgetFrame(onClick = openPath(context, todos?.path ?: snapshot.trip?.path ?: "/")) {
+            Column(modifier = GlanceModifier.fillMaxSize()) {
+                Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+                    Icon(Icons.Rounded.CheckCircle, GlanceTheme.colors.primary, 14.dp)
+                    Spacer(GlanceModifier.width(5.dp))
+                    Eyebrow(labels.todos, GlanceTheme.colors.primary, GlanceModifier.defaultWeight())
+                    if (todos != null && todos.total > 0) Line("${todos.total - todos.open}/${todos.total}", 12.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Bold)
+                }
+                Spacer(GlanceModifier.height(8.dp))
+                if (todos == null || todos.open == 0) {
+                    Spacer(GlanceModifier.defaultWeight())
+                    Line(labels.noTodos, 16.sp, weight = FontWeight.Bold)
+                    snapshot.trip?.title?.let { Line(it, 12.sp, GlanceTheme.colors.onSurfaceVariant) }
+                    Spacer(GlanceModifier.defaultWeight())
+                } else {
+                    if (!size.isWide) {
+                        Line(todos.open.toString(), 34.sp, GlanceTheme.colors.primary, FontWeight.Bold)
+                        Spacer(GlanceModifier.defaultWeight())
+                    }
+                    val limit = when {
+                        size.isTall -> 6
+                        size.isWide -> 3
+                        else -> 1
+                    }
+                    Column(modifier = GlanceModifier.fillMaxWidth()) {
+                        todos.items.take(limit).forEach { todo ->
+                            Row(modifier = GlanceModifier.fillMaxWidth().padding(vertical = 3.dp), verticalAlignment = Alignment.CenterVertically) {
+                                Box(
+                                    modifier = GlanceModifier.size(14.dp).cornerRadius(7.dp).background(priorityColor(todo.priority) ?: GlanceTheme.colors.outline),
+                                    contentAlignment = Alignment.Center,
+                                ) {
+                                    Box(modifier = GlanceModifier.size(10.dp).cornerRadius(5.dp).background(GlanceTheme.colors.widgetBackground)) {}
+                                }
+                                Spacer(GlanceModifier.width(8.dp))
+                                Line(todo.name, 13.sp, modifier = GlanceModifier.defaultWeight())
+                                if (size.isWide) RelativeDay.label(todo.due, labels)?.let { Line(it, 11.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Medium) }
+                            }
+                        }
+                    }
+                    if (size.isWide) Spacer(GlanceModifier.defaultWeight())
+                }
+                val packing = snapshot.packing
+                if (size.isTall && packing != null && packing.total > 0) {
+                    Spacer(GlanceModifier.height(8.dp))
+                    Row(verticalAlignment = Alignment.CenterVertically) {
+                        Icon(Icons.Rounded.Luggage, GlanceTheme.colors.onSurfaceVariant, 13.dp)
+                        Spacer(GlanceModifier.width(5.dp))
+                        Line("${labels.packing}: ${packing.packed}/${packing.total}", 12.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Medium)
+                    }
+                    Spacer(GlanceModifier.height(5.dp))
+                    Bar(packing.packed.toFloat() / packing.total, GlanceTheme.colors.primary, GlanceTheme.colors.surfaceVariant)
+                }
+            }
+        }
+    }
+
+    private fun priorityColor(priority: Int): ColorProvider? = when (priority) {
+        3 -> TrekStatus.danger
+        2 -> TrekStatus.pending
+        1 -> ColorProvider(androidx.compose.ui.graphics.Color(0xFF4A7DDB))
+        else -> null
+    }
+}
+
+// ---- Packing ----
+
+/** How full the bags are, their weight, and what is still missing. */
+class PackingWidget : TrekWidget() {
+    @Composable
+    override fun Content(snapshot: WidgetSnapshot?) {
+        val context = LocalContext.current
+        val size = LocalSize.current
+        val labels = snapshot?.labels ?: return EmptyWidget(WidgetSamples.emptyText(context))
+        val packing = snapshot.packing
+        WidgetFrame(onClick = openPath(context, packing?.path ?: snapshot.trip?.path ?: "/")) {
+            Column(modifier = GlanceModifier.fillMaxSize()) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Icon(Icons.Rounded.Luggage, GlanceTheme.colors.primary, 14.dp)
+                    Spacer(GlanceModifier.width(5.dp))
+                    Eyebrow(labels.packing, GlanceTheme.colors.primary)
+                }
+                if (packing == null || packing.total == 0) {
+                    Spacer(GlanceModifier.defaultWeight())
+                    Line(snapshot.trip?.title ?: labels.noTrip, 14.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Medium, maxLines = 3)
+                    Spacer(GlanceModifier.defaultWeight())
+                    return@Column
+                }
+                val progress = packing.packed.toFloat() / packing.total
+                Spacer(GlanceModifier.height(if (size.isWide) 8.dp else 4.dp))
+                if (!size.isWide) {
+                    // Small: the ring is the widget.
+                    Box(modifier = GlanceModifier.fillMaxWidth().defaultWeight(), contentAlignment = Alignment.Center) {
+                        PackRing(progress, 64.dp)
+                    }
+                    Line("${packing.packed}/${packing.total} ${labels.packed}", 11.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Medium)
+                    return@Column
+                }
+                Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+                    PackRing(progress, 64.dp)
+                    Spacer(GlanceModifier.width(12.dp))
+                    Column(modifier = GlanceModifier.defaultWeight()) {
+                        Line("${packing.packed}/${packing.total}", 18.sp, weight = FontWeight.Bold)
+                        Line(labels.packed, 12.sp, GlanceTheme.colors.onSurfaceVariant)
+                        if (!size.isTall && packing.missing.isNotEmpty()) {
+                            Line("${packing.missing.size} ${labels.missing}", 12.sp, GlanceTheme.colors.primary, FontWeight.Medium)
+                        }
+                    }
+                }
+                if (size.isTall) {
+                    Spacer(GlanceModifier.height(10.dp))
+                    // Each group in a column of its own: a Glance column takes ten children at most.
+                    Column(modifier = GlanceModifier.fillMaxWidth()) {
+                        packing.bags.take(2).forEach { bag -> BagRow(bag) }
+                    }
+                    if (packing.missing.isNotEmpty()) {
+                        Spacer(GlanceModifier.height(4.dp))
+                        Column(modifier = GlanceModifier.fillMaxWidth()) {
+                            Eyebrow(labels.missing)
+                            Spacer(GlanceModifier.height(2.dp))
+                            packing.missing.take(2).forEach { item ->
+                                Row(modifier = GlanceModifier.fillMaxWidth().padding(vertical = 2.dp), verticalAlignment = Alignment.CenterVertically) {
+                                    Box(modifier = GlanceModifier.size(6.dp).cornerRadius(3.dp).background(cssColor(item.color) ?: GlanceTheme.colors.outline)) {}
+                                    Spacer(GlanceModifier.width(8.dp))
+                                    Line(item.name, 12.sp, modifier = GlanceModifier.defaultWeight())
+                                    item.category?.let { Line(it, 11.sp, GlanceTheme.colors.onSurfaceVariant) }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun PackRing(progress: Float, size: androidx.compose.ui.unit.Dp) {
+        Box(modifier = GlanceModifier.size(size), contentAlignment = Alignment.Center) {
+            Image(
+                provider = ImageProvider(WidgetArt.ring(progress, stroke = 16f)),
+                contentDescription = null,
+                colorFilter = ColorFilter.tint(GlanceTheme.colors.primary),
+                modifier = GlanceModifier.fillMaxSize(),
+            )
+            Line("${(progress * 100).toInt()}%", 13.sp, weight = FontWeight.Bold)
+        }
+    }
+
+    @Composable
+    private fun BagRow(bag: WidgetSnapshot.Bag) {
+        val bagColor = cssColor(bag.color) ?: GlanceTheme.colors.primary
+        Column(modifier = GlanceModifier.fillMaxWidth().padding(bottom = 6.dp)) {
+            Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+                Box(modifier = GlanceModifier.size(8.dp).cornerRadius(4.dp).background(bagColor)) {}
+                Spacer(GlanceModifier.width(6.dp))
+                Line(bag.name, 12.sp, weight = FontWeight.Medium, modifier = GlanceModifier.defaultWeight())
+                Line(weight(bag.grams) + (bag.limit?.let { " / ${weight(it)}" } ?: ""), 11.sp, GlanceTheme.colors.onSurfaceVariant)
+            }
+            Spacer(GlanceModifier.height(4.dp))
+            Bar(if (bag.limit != null && bag.limit > 0) bag.grams.toFloat() / bag.limit else bag.packed.toFloat() / bag.total.coerceAtLeast(1), bagColor, GlanceTheme.colors.surfaceVariant, 5.dp)
+        }
+    }
+
+    private fun weight(grams: Int): String = if (grams >= 1000) "%.1f kg".format(grams / 1000f) else "$grams g"
+}
+
+// ---- Atlas ----
+
+/** The countries the user has been to, glowing on the world map. Not tied to a trip. */
+class AtlasWidget : TrekWidget() {
+    override val perTrip = false
+
+    @Composable
+    override fun Content(snapshot: WidgetSnapshot?) {
+        val context = LocalContext.current
+        val size = LocalSize.current
+        val labels = snapshot?.labels ?: return EmptyWidget(WidgetSamples.emptyText(context))
+        val atlas = snapshot.atlas
+        val codes = atlas?.codes?.toSet() ?: emptySet()
+        WidgetFrame(onClick = openPath(context, "/atlas")) {
+            Column(modifier = GlanceModifier.fillMaxSize()) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Icon(Icons.Rounded.Public, GlanceTheme.colors.primary, 14.dp)
+                    Spacer(GlanceModifier.width(5.dp))
+                    Eyebrow(context.getString(com.liketrek.trek.R.string.widget_atlas_name), GlanceTheme.colors.primary)
+                }
+                Spacer(GlanceModifier.height(4.dp))
+                val count: @Composable () -> Unit = {
+                    Row(verticalAlignment = Alignment.Bottom) {
+                        Line((atlas?.count ?: 0).toString(), if (size.isWide) 34.sp else 30.sp, GlanceTheme.colors.onSurface, FontWeight.Bold)
+                        Spacer(GlanceModifier.width(6.dp))
+                        Column(modifier = GlanceModifier.padding(bottom = 4.dp)) {
+                            Line(labels.countries, 12.sp, GlanceTheme.colors.onSurface, FontWeight.Bold)
+                            // 195 countries make the world, as on the Atlas page.
+                            if (size.isWide) Line("${((atlas?.count ?: 0) * 100 / 195)}% ${labels.world}", 11.sp, GlanceTheme.colors.onSurfaceVariant)
+                        }
+                    }
+                }
+                if (size.isWide && !size.isTall) {
+                    // Wide: the count beside the map, which gets the height.
+                    Row(modifier = GlanceModifier.fillMaxWidth().defaultWeight(), verticalAlignment = Alignment.CenterVertically) {
+                        count()
+                        Spacer(GlanceModifier.width(10.dp))
+                        WorldMap(codes, GlanceModifier.defaultWeight().fillMaxHeight())
+                    }
+                } else {
+                    count()
+                    Spacer(GlanceModifier.height(6.dp))
+                    WorldMap(codes, GlanceModifier.fillMaxWidth().defaultWeight())
+                }
+                if (size.isTall && atlas != null) {
+                    Spacer(GlanceModifier.height(10.dp))
+                    Row(modifier = GlanceModifier.fillMaxWidth()) {
+                        atlas.recent.take(4).forEach { country ->
+                            Column(modifier = GlanceModifier.defaultWeight(), horizontalAlignment = Alignment.CenterHorizontally) {
+                                Text(flag(country.code), style = TextStyle(fontSize = 20.sp, textAlign = TextAlign.Center))
+                                Line(country.name, 10.sp, GlanceTheme.colors.onSurfaceVariant)
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun WorldMap(codes: Set<String>, modifier: GlanceModifier) {
+        Box(modifier = modifier) {
+            Image(
+                provider = ImageProvider(WidgetArt.worldDots(codes, visited = false)),
+                contentDescription = null,
+                colorFilter = ColorFilter.tint(GlanceTheme.colors.outline),
+                contentScale = ContentScale.Fit,
+                modifier = GlanceModifier.fillMaxSize(),
+            )
+            Image(
+                provider = ImageProvider(WidgetArt.worldDots(codes, visited = true)),
+                contentDescription = null,
+                colorFilter = ColorFilter.tint(GlanceTheme.colors.primary),
+                contentScale = ContentScale.Fit,
+                modifier = GlanceModifier.fillMaxSize(),
+            )
+        }
+    }
+
+    /** The flag emoji of an ISO 3166-1 alpha-2 code. */
+    private fun flag(code: String): String {
+        if (code.length != 2) return ""
+        val first = Character.toChars(0x1F1E6 + (code[0].uppercaseChar() - 'A'))
+        val second = Character.toChars(0x1F1E6 + (code[1].uppercaseChar() - 'A'))
+        return String(first) + String(second)
+    }
+}
+
+// ---- Travel group ----
+
+/** Who comes along, the latest messages and the open poll. */
+class CollabWidget : TrekWidget() {
+    @Composable
+    override fun Content(snapshot: WidgetSnapshot?) {
+        val context = LocalContext.current
+        val size = LocalSize.current
+        val labels = snapshot?.labels ?: return EmptyWidget(WidgetSamples.emptyText(context))
+        val collab = snapshot.collab
+        WidgetFrame(onClick = openPath(context, collab?.path ?: snapshot.trip?.path ?: "/")) {
+            Column(modifier = GlanceModifier.fillMaxSize()) {
+                Row(modifier = GlanceModifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
+                    Icon(Icons.Rounded.Group, GlanceTheme.colors.primary, 14.dp)
+                    Spacer(GlanceModifier.width(5.dp))
+                    if (size.isWide) Eyebrow(labels.group, GlanceTheme.colors.primary, GlanceModifier.defaultWeight()) else Spacer(GlanceModifier.defaultWeight())
+                    collab?.members?.take(if (size.isWide) 4 else 3)?.forEach { member ->
+                        Spacer(GlanceModifier.width(2.dp))
+                        Initials(member.initials, 22.dp)
+                    }
+                }
+                Spacer(GlanceModifier.height(8.dp))
+                val messages = collab?.messages.orEmpty()
+                if (messages.isEmpty() && collab?.poll == null) {
+                    Spacer(GlanceModifier.defaultWeight())
+                    Line(labels.noMessages, 14.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Medium, maxLines = 2)
+                    Spacer(GlanceModifier.defaultWeight())
+                    return@Column
+                }
+                messages.takeLast(if (size.isTall) (if (collab?.poll != null) 2 else 4) else 1).forEach { message ->
+                    Row(modifier = GlanceModifier.fillMaxWidth().padding(vertical = 3.dp), verticalAlignment = Alignment.Top) {
+                        if (!message.mine) {
+                            Initials(message.initials, 24.dp)
+                            Spacer(GlanceModifier.width(6.dp))
+                        } else {
+                            Spacer(GlanceModifier.defaultWeight())
+                        }
+                        Column(
+                            modifier = GlanceModifier
+                                .background(if (message.mine) GlanceTheme.colors.primary else GlanceTheme.colors.surfaceVariant)
+                                .cornerRadius(14.dp).padding(horizontal = 10.dp, vertical = 6.dp),
+                        ) {
+                            if (!message.mine && size.isWide) Line(message.author, 10.sp, GlanceTheme.colors.onSurfaceVariant, FontWeight.Bold)
+                            Line(
+                                message.text,
+                                12.sp,
+                                if (message.mine) GlanceTheme.colors.onPrimary else GlanceTheme.colors.onSurface,
+                                maxLines = if (size.isWide) 2 else 3,
+                            )
+                        }
+                    }
+                }
+                val poll = collab?.poll
+                if (size.isTall && poll != null) {
+                    Spacer(GlanceModifier.defaultWeight())
+                    Column(modifier = GlanceModifier.fillMaxWidth().background(GlanceTheme.colors.secondaryContainer).cornerRadius(14.dp).padding(10.dp)) {
+                        Eyebrow("${labels.poll}: ${poll.voters} ${labels.votes}", GlanceTheme.colors.onSecondaryContainer)
+                        Line(poll.question, 13.sp, GlanceTheme.colors.onSecondaryContainer, FontWeight.Bold)
+                        Spacer(GlanceModifier.height(4.dp))
+                        val most = poll.options.maxOfOrNull { it.votes }?.coerceAtLeast(1) ?: 1
+                        poll.options.take(3).forEach { option ->
+                            Row(modifier = GlanceModifier.fillMaxWidth().padding(vertical = 2.dp), verticalAlignment = Alignment.CenterVertically) {
+                                Line(option.label, 12.sp, GlanceTheme.colors.onSecondaryContainer, modifier = GlanceModifier.width(70.dp))
+                                Bar(option.votes.toFloat() / most, GlanceTheme.colors.primary, GlanceTheme.colors.surface, 5.dp, GlanceModifier.defaultWeight())
+                                Spacer(GlanceModifier.width(6.dp))
+                                Line(option.votes.toString(), 11.sp, GlanceTheme.colors.onSecondaryContainer, FontWeight.Bold)
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun Initials(text: String, size: androidx.compose.ui.unit.Dp) {
+        Box(
+            modifier = GlanceModifier.size(size).cornerRadius(size / 2).background(GlanceTheme.colors.tertiaryContainer),
+            contentAlignment = Alignment.Center,
+        ) {
+            Text(text, style = TextStyle(color = GlanceTheme.colors.onTertiaryContainer, fontSize = 9.sp, fontWeight = FontWeight.Bold), maxLines = 1)
+        }
+    }
+}
+
+/** A widget with nothing to show yet: TREK's mark and what to do. */
+@Composable
+fun EmptyWidget(text: String) {
+    val context = LocalContext.current
+    WidgetFrame(onClick = openPath(context, "/")) {
+        Column(modifier = GlanceModifier.fillMaxSize(), verticalAlignment = Alignment.CenterVertically) {
+            Box(
+                modifier = GlanceModifier.size(34.dp).cornerRadius(11.dp).background(GlanceTheme.colors.primary),
+                contentAlignment = Alignment.Center,
+            ) {
+                Text("T", style = TextStyle(color = GlanceTheme.colors.onPrimary, fontSize = 18.sp, fontWeight = FontWeight.Bold))
+            }
+            Spacer(GlanceModifier.height(10.dp))
+            Line(text, 13.sp, GlanceTheme.colors.onSurface, FontWeight.Medium, maxLines = 4)
+        }
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/WidgetArt.kt

@@ -0,0 +1,152 @@
+package com.liketrek.trek.widget
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.LinearGradient
+import android.graphics.Paint
+import android.graphics.Path
+import android.graphics.RadialGradient
+import android.graphics.Shader
+import android.util.Base64
+import kotlin.math.PI
+import kotlin.math.cos
+import kotlin.math.min
+import kotlin.math.sin
+
+/**
+ * The pictures a widget shows that RemoteViews cannot draw: the trip's cover,
+ * its own sky when it has none, and the world map's dots. Drawn once per
+ * update into bitmaps, kept small (a widget's RemoteViews have a size budget).
+ */
+object WidgetArt {
+    /** A stable number for a text (FNV-1a), the same as TrekStyle.swift's seed. */
+    fun seed(text: String): Long {
+        var hash = 1469598103934665603L
+        for (byte in text.toByteArray(Charsets.UTF_8)) {
+            hash = (hash xor (byte.toLong() and 0xff)) * 1099511628211L
+        }
+        return hash
+    }
+
+    /** The trip's two colours, from its title: the same trip always gets the same sky. */
+    fun tripHues(title: String): Pair<Int, Int> {
+        val base = (java.lang.Long.remainderUnsigned(seed(title), 360)).toFloat()
+        val first = Color.HSVToColor(floatArrayOf(base, 0.62f, 0.78f))
+        val second = Color.HSVToColor(floatArrayOf((base + 40f) % 360f, 0.7f, 0.42f))
+        return first to second
+    }
+
+    /** The cover the app sent, base64 JPEG, decoded down to at most [maxSide] pixels. */
+    fun cover(base64: String?, maxSide: Int = 720): Bitmap? {
+        if (base64.isNullOrBlank()) return null
+        return try {
+            val bytes = Base64.decode(base64, Base64.DEFAULT)
+            val bounds = BitmapFactory.Options().apply { inJustDecodeBounds = true }
+            BitmapFactory.decodeByteArray(bytes, 0, bytes.size, bounds)
+            var sample = 1
+            while (bounds.outWidth / (sample * 2) >= maxSide || bounds.outHeight / (sample * 2) >= maxSide) sample *= 2
+            BitmapFactory.decodeByteArray(bytes, 0, bytes.size, BitmapFactory.Options().apply { inSampleSize = sample })
+        } catch (e: IllegalArgumentException) {
+            null
+        }
+    }
+
+    /** A trip without a cover: its two colours as a sky, with contour lines over it. */
+    fun sky(title: String, width: Int = 480, height: Int = 480): Bitmap {
+        val (first, second) = tripHues(title)
+        val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        val paint = Paint(Paint.ANTI_ALIAS_FLAG)
+        paint.shader = LinearGradient(0f, 0f, width.toFloat(), height.toFloat(), first, second, Shader.TileMode.CLAMP)
+        canvas.drawRect(0f, 0f, width.toFloat(), height.toFloat(), paint)
+        paint.shader = RadialGradient(width * 0.85f, height * 0.05f, width * 0.6f, Color.argb(70, 255, 255, 255), Color.TRANSPARENT, Shader.TileMode.CLAMP)
+        canvas.drawRect(0f, 0f, width.toFloat(), height.toFloat(), paint)
+        paint.shader = null
+        drawContours(canvas, width, height, java.lang.Long.remainderUnsigned(seed(title), 997).toInt(), Color.argb(36, 255, 255, 255))
+        return bitmap
+    }
+
+    /** Concentric wobbly rings, the topographic lines that stand for travel in TREK. */
+    private fun drawContours(canvas: Canvas, width: Int, height: Int, seed: Int, color: Int) {
+        val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+            style = Paint.Style.STROKE
+            strokeWidth = 2f
+            this.color = color
+        }
+        val cx = width * (0.25f + (seed % 50) / 100f)
+        val cy = height * (0.35f + (seed % 30) / 100f)
+        val maxR = min(width, height) * 1.1f
+        val rings = 11
+        for (ring in 1..rings) {
+            val r = maxR * ring / rings
+            val path = Path()
+            val steps = 72
+            for (i in 0..steps) {
+                val a = 2 * PI * i / steps
+                val wobble = 1 + 0.08 * sin(a * 3 + seed + ring) + 0.05 * cos(a * 5 + seed * 0.7)
+                val x = cx + (r * wobble * cos(a)).toFloat()
+                val y = cy + (r * wobble * sin(a) * 0.8).toFloat()
+                if (i == 0) path.moveTo(x, y) else path.lineTo(x, y)
+            }
+            canvas.drawPath(path, paint)
+        }
+    }
+
+    /**
+     * The world map as dots, white so the widget tints it: [visited] true draws
+     * only the countries in [codes], false only the others.
+     */
+    fun worldDots(codes: Set<String>, visited: Boolean, dot: Int = 8): Bitmap {
+        val rows = WorldGrid.ROWS.size
+        val bitmap = Bitmap.createBitmap(WorldGrid.COLUMNS * dot, rows * dot, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply { this.color = Color.WHITE }
+        val radius = dot * 0.36f
+        for (row in 0 until rows) {
+            for (column in 0 until WorldGrid.COLUMNS) {
+                val code = WorldGrid.code(row, column) ?: continue
+                if ((code in codes) != visited) continue
+                canvas.drawCircle(column * dot + dot / 2f, row * dot + dot / 2f, radius, paint)
+            }
+        }
+        return bitmap
+    }
+
+    /** A ring of [progress] (0..1), white on a faint track, for the countdown and the packing. */
+    fun ring(progress: Float, sizePx: Int = 160, stroke: Float = 14f, track: Int = Color.argb(60, 255, 255, 255)): Bitmap {
+        val bitmap = Bitmap.createBitmap(sizePx, sizePx, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+            style = Paint.Style.STROKE
+            strokeWidth = stroke
+            strokeCap = Paint.Cap.ROUND
+        }
+        val inset = stroke / 2 + 1
+        val oval = android.graphics.RectF(inset, inset, sizePx - inset, sizePx - inset)
+        paint.color = track
+        canvas.drawArc(oval, 0f, 360f, false, paint)
+        paint.color = Color.WHITE
+        val sweep = 360f * progress.coerceIn(0f, 1f)
+        if (sweep > 0) canvas.drawArc(oval, -90f, sweep, false, paint)
+        return bitmap
+    }
+
+    /** A trip's days as segments, filled up to [index]: white, the widget tints it. Track at a third. */
+    fun segments(index: Int, total: Int, width: Int = 600, height: Int = 10): Bitmap {
+        val count = total.coerceIn(1, 31)
+        val filled = if (total > 31) (index * 31f / total).toInt().coerceAtLeast(1) else index
+        val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        val paint = Paint(Paint.ANTI_ALIAS_FLAG)
+        val gap = if (count > 14) 4f else 8f
+        val w = (width - gap * (count - 1)) / count
+        for (i in 0 until count) {
+            paint.color = if (i < filled) Color.WHITE else Color.argb(85, 255, 255, 255)
+            val left = i * (w + gap)
+            canvas.drawRoundRect(android.graphics.RectF(left, 0f, left + w, height.toFloat()), height / 2f, height / 2f, paint)
+        }
+        return bitmap
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/WidgetConfigActivity.kt

@@ -0,0 +1,176 @@
+package com.liketrek.trek.widget
+
+import android.appwidget.AppWidgetManager
+import android.content.Intent
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.AutoAwesome
+import androidx.compose.material.icons.rounded.Luggage
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.LargeTopAppBar
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.RadioButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.rememberTopAppBarState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.input.nestedscroll.nestedScroll
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.glance.appwidget.GlanceAppWidgetManager
+import androidx.lifecycle.lifecycleScope
+import com.liketrek.trek.R
+import com.liketrek.trek.ui.TrekMaterialTheme
+import kotlinx.coroutines.launch
+
+/**
+ * "Choose trip" for a placed widget, the counterpart of the iOS widget's Edit
+ * Widget (TripIntent.swift): Automatic follows the dashboard's trip, or one of
+ * the trips the app listed (key "trips"). Shown when the widget is placed
+ * (optional, it starts on Automatic) and again from the widget's long press.
+ */
+class WidgetConfigActivity : ComponentActivity() {
+    private var appWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        super.onCreate(savedInstanceState)
+        appWidgetId = intent?.extras?.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID)
+            ?: AppWidgetManager.INVALID_APPWIDGET_ID
+        if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
+            finish()
+            return
+        }
+        // Backing out keeps the widget on what it had (Automatic for a new one).
+        setResult(RESULT_OK, Intent().putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId))
+        val trips = WidgetStore.trips(this)
+        val current = WidgetStore.tripFor(this, appWidgetId)
+        setContent {
+            TrekMaterialTheme {
+                TripPicker(trips, current, onPick = ::pick)
+            }
+        }
+    }
+
+    private fun pick(tripId: String) {
+        WidgetStore.setTripFor(this, appWidgetId, tripId)
+        lifecycleScope.launch {
+            val manager = GlanceAppWidgetManager(this@WidgetConfigActivity)
+            val glanceId = runCatching { manager.getGlanceIdBy(appWidgetId) }.getOrNull()
+            // Only the widget this id belongs to: Glance keys a session by the id alone,
+            // so another class updating it would draw its own layout there.
+            val widget = TrekWidgetUpdater.widgetFor(this@WidgetConfigActivity, appWidgetId)
+            if (glanceId != null && widget != null) runCatching { widget.update(this@WidgetConfigActivity, glanceId) }
+            setResult(RESULT_OK, Intent().putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId))
+            finish()
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun TripPicker(trips: List<TripRef>, current: String, onPick: (String) -> Unit) {
+    var selected by remember { mutableStateOf(current) }
+    val scroll = TopAppBarDefaults.exitUntilCollapsedScrollBehavior(rememberTopAppBarState())
+    Scaffold(
+        modifier = Modifier.fillMaxSize().nestedScroll(scroll.nestedScrollConnection),
+        topBar = {
+            LargeTopAppBar(
+                title = { Text(stringResource(R.string.widget_intent_title)) },
+                scrollBehavior = scroll,
+            )
+        },
+    ) { padding ->
+        LazyColumn(
+            contentPadding = PaddingValues(start = 16.dp, end = 16.dp, top = padding.calculateTopPadding(), bottom = padding.calculateBottomPadding() + 16.dp),
+            verticalArrangement = Arrangement.spacedBy(8.dp),
+        ) {
+            item {
+                Text(
+                    stringResource(R.string.widget_intent_description),
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    modifier = Modifier.padding(start = 4.dp, bottom = 8.dp),
+                )
+            }
+            item {
+                PickRow(
+                    title = stringResource(R.string.widget_intent_auto),
+                    subtitle = stringResource(R.string.widget_intent_auto_hint),
+                    leading = { Icon(Icons.Rounded.AutoAwesome, null, tint = MaterialTheme.colorScheme.primary) },
+                    checked = selected == WidgetStore.AUTO,
+                ) {
+                    selected = WidgetStore.AUTO
+                    onPick(WidgetStore.AUTO)
+                }
+            }
+            items(trips, key = { it.id }) { trip ->
+                PickRow(
+                    title = trip.title,
+                    subtitle = RelativeDayRange(trip),
+                    leading = { Icon(Icons.Rounded.Luggage, null, tint = MaterialTheme.colorScheme.secondary) },
+                    checked = selected == trip.id.toString(),
+                ) {
+                    selected = trip.id.toString()
+                    onPick(trip.id.toString())
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun RelativeDayRange(trip: TripRef): String? {
+    val context = androidx.compose.ui.platform.LocalContext.current
+    return RelativeDay.range(context, trip.start, trip.end)
+}
+
+@Composable
+private fun PickRow(title: String, subtitle: String?, leading: @Composable () -> Unit, checked: Boolean, onClick: () -> Unit) {
+    Surface(
+        shape = RoundedCornerShape(20.dp),
+        color = if (checked) MaterialTheme.colorScheme.secondaryContainer else MaterialTheme.colorScheme.surfaceContainerLow,
+        modifier = Modifier.fillMaxWidth().clickable(onClick = onClick),
+    ) {
+        Row(modifier = Modifier.padding(horizontal = 16.dp, vertical = 14.dp), verticalAlignment = Alignment.CenterVertically) {
+            Surface(shape = RoundedCornerShape(12.dp), color = MaterialTheme.colorScheme.surface, modifier = Modifier.size(40.dp)) {
+                Row(horizontalArrangement = Arrangement.Center, verticalAlignment = Alignment.CenterVertically) { leading() }
+            }
+            Spacer(Modifier.width(14.dp))
+            Column(modifier = Modifier.weight(1f)) {
+                Text(title, style = MaterialTheme.typography.titleMedium, maxLines = 1, overflow = TextOverflow.Ellipsis)
+                if (subtitle != null) {
+                    Text(subtitle, style = MaterialTheme.typography.bodyMedium, color = MaterialTheme.colorScheme.onSurfaceVariant, maxLines = 1)
+                }
+            }
+            RadioButton(selected = checked, onClick = onClick)
+        }
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/WidgetSamples.kt

@@ -0,0 +1,89 @@
+package com.liketrek.trek.widget
+
+import android.content.Context
+import com.liketrek.trek.R
+import java.time.LocalDate
+import org.json.JSONObject
+
+/**
+ * The sample trip the widget picker shows before the app ever wrote a snapshot,
+ * and what the screenshot tests draw: the same trip to Kyoto as the iOS gallery
+ * (WidgetSnapshot.sample in TrekFamily.swift).
+ */
+object WidgetSamples {
+    fun emptyText(context: Context): String = context.getString(R.string.widget_empty)
+
+    fun snapshot(running: Boolean, now: LocalDate = LocalDate.now()): WidgetSnapshot = WidgetSnapshot.fromJson(JSONObject(json(running, now)))
+
+    fun json(running: Boolean, now: LocalDate = LocalDate.now()): String {
+        fun iso(offset: Long) = now.plusDays(offset).toString()
+        val start = if (running) -2L else 12L
+        val today = if (running) {
+            """
+            "today": {"dayLabel": "Day 3 of 9", "index": 3, "total": 9, "stops": [
+              {"time": "08:30", "name": "Fushimi Inari Taisha", "minutes": 510, "color": "#D6273B", "symbol": "building.columns.fill"},
+              {"time": "11:00", "name": "Nishiki Market", "minutes": 660, "color": "#E8A13A", "symbol": "storefront.fill"},
+              {"time": "13:30", "name": "Kiyomizu-dera", "minutes": 810, "color": "#2FA37A", "symbol": "leaf.fill"},
+              {"time": "16:00", "name": "Gion walk", "minutes": 960, "color": "#4A7DDB", "symbol": "figure.walk"},
+              {"time": "19:30", "name": "Dinner at Pontocho", "minutes": 1170, "color": "#8E6CD9", "symbol": "fork.knife"}
+            ]},
+            """
+        } else {
+            ""
+        }
+        return """
+        {
+          "trip": {"title": "Autumn in Kyoto", "start": "${iso(start)}", "end": "${iso(start + 8)}", "path": "/trips/1",
+                   "place": "Kyoto, Japan", "dayCount": 9, "placeCount": 34, "memberCount": 3},
+          $today
+          "weather": {"temp": 18, "high": 21, "low": 11, "main": "${if (running) "Clear" else "Clouds"}", "label": "Mostly sunny", "place": "Kyoto", "rain": 10},
+          "bookings": [
+            {"title": "LH 716", "kind": "flight", "date": "${iso(if (running) 6 else 12)}", "time": "13:05", "detail": "FRA → HND", "confirmed": true, "path": "/trips/1"},
+            {"title": "Shinkansen Nozomi 21", "kind": "train", "date": "${iso(if (running) 0 else 13)}", "time": "09:12", "detail": "Tokyo → Kyoto", "confirmed": true, "path": "/trips/1"},
+            {"title": "Hotel Kanra Kyoto", "kind": "hotel", "date": "${iso(if (running) 0 else 13)}", "time": "15:00", "detail": "6 nights", "confirmed": true, "path": "/trips/1"},
+            {"title": "Kaiseki at Kikunoi", "kind": "restaurant", "date": "${iso(if (running) 1 else 15)}", "time": "19:00", "detail": "Higashiyama", "confirmed": false, "path": "/trips/1"},
+            {"title": "Tea ceremony", "kind": "event", "date": "${iso(if (running) 2 else 16)}", "time": "10:30", "detail": "Camellia Flower", "confirmed": true, "path": "/trips/1"}
+          ],
+          "todos": {"open": 4, "total": 11, "path": "/trips/1/todos", "items": [
+            {"name": "Order JR Pass", "due": "${iso(if (running) 0 else 3)}", "priority": 3},
+            {"name": "Book Ghibli Museum tickets", "due": "${iso(if (running) 1 else 5)}", "priority": 2},
+            {"name": "Get yen in cash", "priority": 1},
+            {"name": "Download offline maps", "priority": 0}
+          ]},
+          "packing": {"packed": 23, "total": 31, "path": "/trips/1/packing",
+            "bags": [
+              {"name": "Suitcase", "color": "#4A7DDB", "grams": 14200, "limit": 23000, "packed": 15, "total": 19},
+              {"name": "Daypack", "color": "#2FA37A", "grams": 4100, "limit": 8000, "packed": 8, "total": 12}
+            ],
+            "missing": [
+              {"name": "Rain jacket", "category": "Clothes", "color": "#4A7DDB"},
+              {"name": "Power bank", "category": "Tech", "color": "#2FA37A"},
+              {"name": "Passport", "category": "Documents", "color": "#2FA37A"},
+              {"name": "Sandals", "category": "Shoes", "color": "#4A7DDB"}
+            ]},
+          "atlas": {"count": 23, "trips": 41, "days": 318,
+            "codes": ["DE","AT","CH","FR","IT","ES","PT","NL","BE","DK","NO","SE","GB","IE","GR","HR","JP","TH","VN","US","CA","MA","AU"],
+            "recent": [{"code": "JP", "name": "Japan"}, {"code": "NO", "name": "Norway"}, {"code": "PT", "name": "Portugal"}, {"code": "MA", "name": "Morocco"}],
+            "continents": [{"name": "Europe", "count": 16}, {"name": "Asia", "count": 3}, {"name": "North America", "count": 2}, {"name": "Africa", "count": 1}, {"name": "Oceania", "count": 1}]},
+          "collab": {"path": "/trips/1?tab=collab",
+            "members": [{"name": "Maurice", "initials": "MA"}, {"name": "Julien", "initials": "JU"}, {"name": "Elmo", "initials": "EL"}, {"name": "Sara", "initials": "SA"}],
+            "messages": [
+              {"author": "Julien", "initials": "JU", "text": "Got the JR Pass vouchers, all four of us", "mine": false},
+              {"author": "Sara", "initials": "SA", "text": "Can we push dinner to 20:00? Train is late", "mine": false},
+              {"author": "Maurice", "initials": "MA", "text": "Sure, I moved the table at Pontocho", "mine": true}
+            ],
+            "poll": {"question": "Day trip on Saturday?", "voters": 4, "options": [{"label": "Nara", "votes": 3}, {"label": "Uji", "votes": 1}, {"label": "Kurama", "votes": 0}]}},
+          "labels": {
+            "nextTrip": "Next trip", "today": "Today", "noTrip": "No trip coming up. Plan the next one in TREK.",
+            "inDays": "in {n} days", "tomorrow": "Tomorrow", "nothingPlanned": "Nothing planned today",
+            "days": "days", "bookings": "Coming up", "noBookings": "No bookings ahead",
+            "todos": "To-dos", "noTodos": "All done", "packing": "Packing", "packed": "packed",
+            "confirmed": "Confirmed", "pending": "Pending", "todayShort": "Today", "tomorrowShort": "Tomorrow",
+            "now": "Now", "places": "places", "travellers": "travellers", "allDone": "Day done",
+            "missing": "still to pack", "countries": "countries", "world": "of the world", "group": "Travel group",
+            "poll": "Poll", "votes": "votes", "noMessages": "No messages yet", "departure": "Departure"
+          }
+        }
+        """.trimIndent()
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/WidgetSnapshot.kt

@@ -0,0 +1,286 @@
+package com.liketrek.trek.widget
+
+import java.time.LocalDate
+import java.time.format.DateTimeParseException
+import java.time.temporal.ChronoUnit
+import org.json.JSONArray
+import org.json.JSONObject
+
+/**
+ * What the app last told the widgets: client/src/native/widgets.ts builds it and
+ * hands it over through TrekShell.setWidgetSnapshot, the same JSON the iOS
+ * widgets read (client/ios/App/TREKWidgets/WidgetSnapshot.swift). Texts arrive
+ * already translated, so a widget always speaks the language the app does.
+ *
+ * Everything past trip, today and labels is optional: a binary newer than the
+ * server's UI shows what it gets, and unknown fields are ignored.
+ */
+data class WidgetSnapshot(
+    val trip: Trip?,
+    val today: Today?,
+    val weather: Weather?,
+    val bookings: List<Booking>,
+    val todos: Todos?,
+    val packing: Packing?,
+    val atlas: Atlas?,
+    val collab: Collab?,
+    val labels: Labels,
+) {
+    data class Trip(
+        val title: String,
+        val start: String,
+        val end: String,
+        val path: String,
+        val place: String?,
+        /** A small JPEG of the cover, base64. */
+        val cover: String?,
+        val dayCount: Int?,
+        val placeCount: Int?,
+        val memberCount: Int?,
+    )
+
+    data class Stop(
+        val time: String?,
+        val name: String,
+        /** Minutes after midnight. */
+        val minutes: Int?,
+        /** #rrggbb */
+        val color: String?,
+        /** The SF Symbol name the iOS widget uses; [TrekIcons] maps it. */
+        val symbol: String?,
+    )
+
+    data class Today(val dayLabel: String, val stops: List<Stop>, val index: Int?, val total: Int?)
+
+    data class Weather(
+        val temp: Int,
+        val high: Int?,
+        val low: Int?,
+        val main: String,
+        val label: String,
+        val place: String?,
+        val rain: Int?,
+    )
+
+    data class Booking(
+        val title: String,
+        val kind: String,
+        val date: String?,
+        val time: String?,
+        val detail: String?,
+        val confirmed: Boolean,
+        val path: String,
+    )
+
+    data class Todo(val name: String, val due: String?, val priority: Int)
+
+    data class Todos(val open: Int, val total: Int, val items: List<Todo>, val path: String)
+
+    data class Bag(val name: String, val color: String, val grams: Int, val limit: Int?, val packed: Int, val total: Int)
+
+    data class PackItem(val name: String, val category: String?, val color: String?)
+
+    data class Packing(val packed: Int, val total: Int, val path: String, val bags: List<Bag>, val missing: List<PackItem>)
+
+    data class Country(val code: String, val name: String)
+
+    data class Continent(val name: String, val count: Int)
+
+    data class Atlas(
+        val count: Int,
+        val codes: List<String>,
+        val recent: List<Country>,
+        val continents: List<Continent>,
+        val trips: Int?,
+        val days: Int?,
+    )
+
+    data class Member(val name: String, val initials: String)
+
+    data class Message(val author: String, val initials: String, val text: String, val at: String?, val mine: Boolean)
+
+    data class PollOption(val label: String, val votes: Int)
+
+    data class Poll(val question: String, val options: List<PollOption>, val voters: Int)
+
+    data class Collab(val members: List<Member>, val messages: List<Message>, val poll: Poll?, val path: String)
+
+    /** The labels, translated by the app. The optional ones fall back to English. */
+    data class Labels(private val raw: JSONObject) {
+        val nextTrip get() = text("nextTrip", "Next trip")
+        val today get() = text("today", "Today")
+        val noTrip get() = text("noTrip", "No trip coming up. Plan the next one in TREK.")
+        val inDays get() = text("inDays", "in {n} days")
+        val tomorrow get() = text("tomorrow", "Tomorrow")
+        val nothingPlanned get() = text("nothingPlanned", "Nothing planned today")
+        val days get() = text("days", "days")
+        val bookings get() = text("bookings", "Coming up")
+        val noBookings get() = text("noBookings", "No bookings ahead")
+        val todos get() = text("todos", "To-dos")
+        val noTodos get() = text("noTodos", "All done")
+        val packing get() = text("packing", "Packing")
+        val packed get() = text("packed", "packed")
+        val confirmed get() = text("confirmed", "Confirmed")
+        val pending get() = text("pending", "Pending")
+        val todayShort get() = text("todayShort", today)
+        val tomorrowShort get() = text("tomorrowShort", tomorrow)
+        val now get() = text("now", "Now")
+        val places get() = text("places", "places")
+        val travellers get() = text("travellers", "travellers")
+        val allDone get() = text("allDone", "Day done")
+        val openTrek get() = text("openTrek", "Open TREK")
+        val missing get() = text("missing", "still to pack")
+        val countries get() = text("countries", "countries")
+        val world get() = text("world", "of the world")
+        val group get() = text("group", "Travel group")
+        val poll get() = text("poll", "Poll")
+        val votes get() = text("votes", "votes")
+        val noMessages get() = text("noMessages", "No messages yet")
+        val departure get() = text("departure", "Departure")
+
+        private fun text(key: String, fallback: String): String = raw.optString(key).ifBlank { fallback }
+    }
+
+    /** Whole days from [now] to the trip's start. */
+    fun daysUntilStart(now: LocalDate = LocalDate.now()): Long? = trip?.let { day(it.start) }?.let { ChronoUnit.DAYS.between(now, it) }
+
+    /** The trip's length in days, from its dates when the app sent no count. */
+    val tripLength: Int?
+        get() {
+            trip?.dayCount?.takeIf { it > 0 }?.let { return it }
+            val start = trip?.let { day(it.start) } ?: return null
+            val end = day(trip.end) ?: return null
+            return ChronoUnit.DAYS.between(start, end).toInt() + 1
+        }
+
+    companion object {
+        fun parse(json: String): WidgetSnapshot? = try {
+            fromJson(JSONObject(json))
+        } catch (e: Exception) {
+            null
+        }
+
+        fun fromJson(o: JSONObject): WidgetSnapshot = WidgetSnapshot(
+            trip = o.optJSONObject("trip")?.let {
+                Trip(
+                    title = it.optString("title"),
+                    start = it.optString("start"),
+                    end = it.optString("end"),
+                    path = it.optString("path", "/"),
+                    place = it.str("place"),
+                    cover = it.str("cover"),
+                    dayCount = it.int("dayCount"),
+                    placeCount = it.int("placeCount"),
+                    memberCount = it.int("memberCount"),
+                )
+            },
+            today = o.optJSONObject("today")?.let { t ->
+                Today(
+                    dayLabel = t.optString("dayLabel"),
+                    stops = t.optJSONArray("stops").objects().map {
+                        Stop(it.str("time"), it.optString("name"), it.int("minutes"), it.str("color"), it.str("symbol"))
+                    },
+                    index = t.int("index"),
+                    total = t.int("total"),
+                )
+            },
+            weather = o.optJSONObject("weather")?.let {
+                Weather(it.optInt("temp"), it.int("high"), it.int("low"), it.optString("main"), it.optString("label"), it.str("place"), it.int("rain"))
+            },
+            bookings = o.optJSONArray("bookings").objects().map {
+                Booking(
+                    title = it.optString("title"),
+                    kind = it.optString("kind", "other"),
+                    date = it.str("date"),
+                    time = it.str("time"),
+                    detail = it.str("detail"),
+                    confirmed = it.optBoolean("confirmed"),
+                    path = it.optString("path", "/"),
+                )
+            },
+            todos = o.optJSONObject("todos")?.let { t ->
+                Todos(
+                    open = t.optInt("open"),
+                    total = t.optInt("total"),
+                    items = t.optJSONArray("items").objects().map { Todo(it.optString("name"), it.str("due"), it.optInt("priority")) },
+                    path = t.optString("path", "/"),
+                )
+            },
+            packing = o.optJSONObject("packing")?.let { p ->
+                Packing(
+                    packed = p.optInt("packed"),
+                    total = p.optInt("total"),
+                    path = p.optString("path", "/"),
+                    bags = p.optJSONArray("bags").objects().map {
+                        Bag(it.optString("name"), it.optString("color", "#4A7DDB"), it.optInt("grams"), it.int("limit"), it.optInt("packed"), it.optInt("total"))
+                    },
+                    missing = p.optJSONArray("missing").objects().map { PackItem(it.optString("name"), it.str("category"), it.str("color")) },
+                )
+            },
+            atlas = o.optJSONObject("atlas")?.let { a ->
+                Atlas(
+                    count = a.optInt("count"),
+                    codes = a.optJSONArray("codes").strings(),
+                    recent = a.optJSONArray("recent").objects().map { Country(it.optString("code"), it.optString("name")) },
+                    continents = a.optJSONArray("continents").objects().map { Continent(it.optString("name"), it.optInt("count")) },
+                    trips = a.int("trips"),
+                    days = a.int("days"),
+                )
+            },
+            collab = o.optJSONObject("collab")?.let { c ->
+                Collab(
+                    members = c.optJSONArray("members").objects().map { Member(it.optString("name"), it.optString("initials")) },
+                    messages = c.optJSONArray("messages").objects().map {
+                        Message(it.optString("author"), it.optString("initials"), it.optString("text"), it.str("at"), it.optBoolean("mine"))
+                    },
+                    poll = c.optJSONObject("poll")?.let { p ->
+                        Poll(p.optString("question"), p.optJSONArray("options").objects().map { PollOption(it.optString("label"), it.optInt("votes")) }, p.optInt("voters"))
+                    },
+                    path = c.optString("path", "/"),
+                )
+            },
+            labels = Labels(o.optJSONObject("labels") ?: JSONObject()),
+        )
+
+        fun day(iso: String?): LocalDate? {
+            if (iso.isNullOrBlank() || iso.length < 10) return null
+            return try {
+                LocalDate.parse(iso.substring(0, 10))
+            } catch (e: DateTimeParseException) {
+                null
+            }
+        }
+
+        /** The app link a tap opens: com.liketrek.trek://navigate<path>, which the UI routes (nativeApp.ts). */
+        fun link(path: String): String = "com.liketrek.trek://navigate" + if (path.startsWith("/")) path else "/$path"
+
+        private fun JSONObject.str(key: String): String? = if (isNull(key)) null else optString(key).ifEmpty { null }
+
+        private fun JSONObject.int(key: String): Int? = if (has(key) && !isNull(key)) optInt(key) else null
+
+        private fun JSONArray?.objects(): List<JSONObject> =
+            if (this == null) emptyList() else (0 until length()).mapNotNull { optJSONObject(it) }
+
+        private fun JSONArray?.strings(): List<String> =
+            if (this == null) emptyList() else (0 until length()).mapNotNull { optString(it).ifEmpty { null } }
+    }
+}
+
+/** A trip a widget can be set to, as the app lists them (key "trips"). */
+data class TripRef(val id: Long, val title: String, val start: String, val end: String) {
+    companion object {
+        fun parseList(json: String?): List<TripRef> {
+            if (json.isNullOrBlank()) return emptyList()
+            return try {
+                val array = JSONArray(json)
+                (0 until array.length()).mapNotNull { i ->
+                    val o = array.optJSONObject(i) ?: return@mapNotNull null
+                    if (!o.has("id")) return@mapNotNull null
+                    TripRef(o.optLong("id"), o.optString("title"), o.optString("start"), o.optString("end"))
+                }
+            } catch (e: Exception) {
+                emptyList()
+            }
+        }
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/WidgetStore.kt

@@ -0,0 +1,80 @@
+package com.liketrek.trek.widget
+
+import android.content.Context
+import java.io.File
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+
+/**
+ * Where the widgets' snapshots live: one JSON file per key in the app's own
+ * storage. The widgets run in the app's process, so no shared container is
+ * needed as on iOS; the keys are the same ones the UI writes there
+ * ("snapshot", "trips", "trip.<id>").
+ */
+object WidgetStore {
+    private val KEY = Regex("^(snapshot|trips|trip\\.[0-9]{1,12})$")
+    private const val PREFS = "trek.widgets"
+    const val AUTO = "auto"
+
+    private val changes = MutableStateFlow(0L)
+
+    /**
+     * Counts every write and every trip picked for a widget. A widget reads its
+     * data inside its composition, keyed on this, so a write that lands while its
+     * Glance session still runs is drawn too, not only the first one.
+     */
+    val version: StateFlow<Long> = changes
+
+    fun isValidKey(key: String): Boolean = KEY.matches(key)
+
+    private fun dir(context: Context): File = File(context.filesDir, "widgets").apply { mkdirs() }
+
+    fun write(context: Context, key: String, json: String) {
+        require(isValidKey(key)) { "key must be snapshot, trips or trip.<id>" }
+        val target = File(dir(context), "$key.json")
+        val temp = File(dir(context), "$key.json.tmp")
+        temp.writeText(json)
+        if (!temp.renameTo(target)) {
+            target.delete()
+            temp.renameTo(target)
+        }
+        changes.value++
+    }
+
+    fun read(context: Context, key: String): String? {
+        if (!isValidKey(key)) return null
+        val file = File(dir(context), "$key.json")
+        return if (file.exists()) runCatching { file.readText() }.getOrNull() else null
+    }
+
+    /** The dashboard's snapshot. */
+    fun load(context: Context): WidgetSnapshot? = read(context, "snapshot")?.let(WidgetSnapshot::parse)
+
+    /**
+     * The snapshot of the trip a widget is set to; the dashboard's for none or
+     * "auto", and the dashboard's too while the app has not written that trip.
+     * A trip's snapshot carries no Atlas, so it borrows the dashboard's.
+     */
+    fun load(context: Context, tripId: String?): WidgetSnapshot? {
+        if (tripId == null || tripId == AUTO) return load(context)
+        val own = read(context, "trip.$tripId")?.let(WidgetSnapshot::parse) ?: return load(context)
+        return if (own.atlas == null) own.copy(atlas = load(context)?.atlas) else own
+    }
+
+    fun trips(context: Context): List<TripRef> = TripRef.parseList(read(context, "trips"))
+
+    /** The trip picked for one placed widget, "auto" when none was. */
+    fun tripFor(context: Context, appWidgetId: Int): String =
+        context.getSharedPreferences(PREFS, Context.MODE_PRIVATE).getString("trip.$appWidgetId", AUTO) ?: AUTO
+
+    fun setTripFor(context: Context, appWidgetId: Int, tripId: String) {
+        context.getSharedPreferences(PREFS, Context.MODE_PRIVATE).edit().putString("trip.$appWidgetId", tripId).commit()
+        changes.value++
+    }
+
+    fun forget(context: Context, appWidgetIds: IntArray) {
+        val editor = context.getSharedPreferences(PREFS, Context.MODE_PRIVATE).edit()
+        for (id in appWidgetIds) editor.remove("trip.$id")
+        editor.apply()
+    }
+}

client/android/app/src/main/java/com/liketrek/trek/widget/WidgetUi.kt

@@ -0,0 +1,278 @@
+package com.liketrek.trek.widget
+
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.text.format.DateFormat
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.TextUnit
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.glance.ColorFilter
+import androidx.glance.GlanceComposable
+import androidx.glance.GlanceModifier
+import androidx.glance.GlanceTheme
+import androidx.glance.Image
+import androidx.glance.ImageProvider
+import androidx.glance.action.Action
+import androidx.glance.action.clickable
+import androidx.glance.appwidget.action.actionStartActivity
+import androidx.glance.appwidget.appWidgetBackground
+import androidx.glance.appwidget.cornerRadius
+import androidx.glance.background
+import androidx.glance.layout.Alignment
+import androidx.glance.layout.Box
+import androidx.glance.layout.Column
+import androidx.glance.layout.Row
+import androidx.glance.layout.Spacer
+import androidx.glance.layout.fillMaxSize
+import androidx.glance.layout.fillMaxWidth
+import androidx.glance.layout.height
+import androidx.glance.layout.padding
+import androidx.glance.layout.size
+import androidx.glance.layout.width
+import androidx.glance.material3.ColorProviders
+import androidx.glance.text.FontWeight
+import androidx.glance.text.Text
+import androidx.glance.text.TextStyle
+import androidx.glance.unit.ColorProvider
+import com.liketrek.trek.MainActivity
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+import java.time.temporal.ChronoUnit
+import java.util.Locale
+
+/**
+ * What every TREK widget shares: Material You's colours on Android 12 and later
+ * (the wallpaper's), TREK's own before that, the system's corner radius, the
+ * tap that opens a place in the app, and the small pieces (eyebrow, chip, icon
+ * badge) the widgets are built from.
+ */
+object TrekWidgetTheme {
+    /** TREK's palette (client/src/mobile/mobile.css) for systems without dynamic colour. */
+    val fallback = ColorProviders(
+        light = lightColorScheme(
+            primary = Color(0xFF101013),
+            onPrimary = Color(0xFFF5F5F7),
+            primaryContainer = Color(0xFFE7E5DF),
+            onPrimaryContainer = Color(0xFF101013),
+            secondary = Color(0xFF4A7DDB),
+            secondaryContainer = Color(0xFFE4EAF7),
+            onSecondaryContainer = Color(0xFF1B2F57),
+            tertiary = Color(0xFF2FA37A),
+            surface = Color(0xFFF7F6F2),
+            onSurface = Color(0xFF101013),
+            onSurfaceVariant = Color(0xFF68686F),
+            surfaceVariant = Color(0xFFECEAE4),
+            outline = Color(0xFF9A9AA1),
+            background = Color(0xFFF1EFEA),
+            error = Color(0xFFD6273B),
+        ),
+        dark = darkColorScheme(
+            primary = Color(0xFFF5F5F7),
+            onPrimary = Color(0xFF101013),
+            primaryContainer = Color(0xFF26262C),
+            onPrimaryContainer = Color(0xFFF5F5F7),
+            secondary = Color(0xFF8AAEF0),
+            secondaryContainer = Color(0xFF233250),
+            onSecondaryContainer = Color(0xFFDCE6FA),
+            tertiary = Color(0xFF5CC79E),
+            surface = Color(0xFF121216),
+            onSurface = Color(0xFFF5F5F7),
+            onSurfaceVariant = Color(0xFF9C9CA3),
+            surfaceVariant = Color(0xFF1E1E24),
+            outline = Color(0xFF6E6E76),
+            background = Color(0xFF0C0C0F),
+            error = Color(0xFFFF6B7A),
+        ),
+    )
+
+    @Composable
+    fun Themed(content: @Composable () -> Unit) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) GlanceTheme(content = content) else GlanceTheme(colors = fallback, content = content)
+    }
+}
+
+/** The status colours, the same on every wallpaper so they keep their meaning. */
+object TrekStatus {
+    val confirmed = ColorProvider(Color(0xFF2FA37A))
+    val pending = ColorProvider(Color(0xFFE8A13A))
+    val danger = ColorProvider(Color(0xFFD6273B))
+    val white = ColorProvider(Color.White)
+    val whiteMuted = ColorProvider(Color(0xCCFFFFFF))
+    val whiteFaint = ColorProvider(Color(0x99FFFFFF))
+    val scrim = ColorProvider(Color(0x66000000))
+    val glass = ColorProvider(Color(0x33000000))
+}
+
+/** Opens [path] of the user's server in the app (nativeApp.ts routes com.liketrek.trek://navigate). */
+fun openPath(context: Context, path: String): Action = actionStartActivity(
+    Intent(Intent.ACTION_VIEW, Uri.parse(WidgetSnapshot.link(path)), context, MainActivity::class.java)
+        .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_SINGLE_TOP),
+)
+
+/** The ground of a widget: the system's widget shape and the theme's widget background. */
+@Composable
+fun WidgetFrame(
+    onClick: Action?,
+    background: ColorProvider = GlanceTheme.colors.widgetBackground,
+    padding: Dp = 14.dp,
+    content: @Composable () -> Unit,
+) {
+    var modifier = GlanceModifier.fillMaxSize().appWidgetBackground().background(background).padding(padding)
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) modifier = modifier.cornerRadius(android.R.dimen.system_app_widget_background_radius)
+    if (onClick != null) modifier = modifier.clickable(onClick)
+    Box(modifier = modifier) { content() }
+}
+
+/** A small, bold, upper-case line above a widget's content. */
+@Composable
+@GlanceComposable
+fun Eyebrow(text: String, color: ColorProvider = GlanceTheme.colors.onSurfaceVariant, modifier: GlanceModifier = GlanceModifier) {
+    Text(
+        text = text.uppercase(Locale.getDefault()),
+        style = TextStyle(color = color, fontSize = 11.sp, fontWeight = FontWeight.Bold),
+        maxLines = 1,
+        modifier = modifier,
+    )
+}
+
+@Composable
+fun Line(
+    text: String,
+    size: TextUnit = 13.sp,
+    color: ColorProvider = GlanceTheme.colors.onSurface,
+    weight: FontWeight = FontWeight.Normal,
+    maxLines: Int = 1,
+    modifier: GlanceModifier = GlanceModifier,
+) {
+    Text(text = text, style = TextStyle(color = color, fontSize = size, fontWeight = weight), maxLines = maxLines, modifier = modifier)
+}
+
+/** An icon in a tinted circle: a booking's kind, a stop's category. */
+@Composable
+fun IconBadge(symbol: String?, tint: ColorProvider, background: ColorProvider, size: Dp = 28.dp) {
+    Box(
+        modifier = GlanceModifier.size(size).background(background).cornerRadius(size / 2),
+        contentAlignment = Alignment.Center,
+    ) {
+        Image(
+            provider = TrekIcons.provider(symbol),
+            contentDescription = null,
+            colorFilter = ColorFilter.tint(tint),
+            modifier = GlanceModifier.size(size * 0.58f),
+        )
+    }
+}
+
+@Composable
+fun Icon(vector: ImageVector, tint: ColorProvider, size: Dp = 14.dp) {
+    Image(provider = TrekIcons.provider(vector), contentDescription = null, colorFilter = ColorFilter.tint(tint), modifier = GlanceModifier.size(size))
+}
+
+@Composable
+fun SymbolIcon(symbol: String, tint: ColorProvider, size: Dp = 14.dp) {
+    Image(provider = TrekIcons.provider(symbol), contentDescription = null, colorFilter = ColorFilter.tint(tint), modifier = GlanceModifier.size(size))
+}
+
+/** A rounded pill with a short text: a date range, a weather reading, a status. */
+@Composable
+fun Chip(
+    text: String,
+    background: ColorProvider,
+    color: ColorProvider,
+    leading: ImageProvider? = null,
+    leadingTint: ColorProvider? = null,
+) {
+    Row(
+        modifier = GlanceModifier.background(background).cornerRadius(100.dp).padding(horizontal = 8.dp, vertical = 3.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        if (leading != null) {
+            Image(
+                provider = leading,
+                contentDescription = null,
+                colorFilter = leadingTint?.let { ColorFilter.tint(it) },
+                modifier = GlanceModifier.size(12.dp),
+            )
+            Spacer(GlanceModifier.width(4.dp))
+        }
+        Text(text = text, style = TextStyle(color = color, fontSize = 11.sp, fontWeight = FontWeight.Medium), maxLines = 1)
+    }
+}
+
+@Composable
+fun WeatherChip(weather: WidgetSnapshot.Weather, onPhoto: Boolean) {
+    Chip(
+        text = "${weather.temp}°",
+        background = if (onPhoto) TrekStatus.glass else GlanceTheme.colors.secondaryContainer,
+        color = if (onPhoto) TrekStatus.white else GlanceTheme.colors.onSecondaryContainer,
+        leading = TrekIcons.provider(TrekIcons.weather(weather.main)),
+        leadingTint = if (onPhoto) TrekStatus.white else GlanceTheme.colors.onSecondaryContainer,
+    )
+}
+
+/** A horizontal bar of [value] (0..1): Glance's progress indicator, rounded. */
+@Composable
+fun Bar(value: Float, color: ColorProvider, track: ColorProvider, height: Dp = 6.dp, modifier: GlanceModifier = GlanceModifier.fillMaxWidth()) {
+    androidx.glance.appwidget.LinearProgressIndicator(
+        progress = value.coerceIn(0f, 1f),
+        color = color,
+        backgroundColor = track,
+        modifier = modifier.height(height).cornerRadius(height / 2),
+    )
+}
+
+/** The day segments of a trip: one bar per day, filled up to today. Drawn as one image (a Row takes ten children at most). */
+@Composable
+fun DaySegments(index: Int, total: Int, color: ColorProvider) {
+    Image(
+        provider = ImageProvider(WidgetArt.segments(index, total)),
+        contentDescription = "$index / $total",
+        colorFilter = ColorFilter.tint(color),
+        contentScale = androidx.glance.layout.ContentScale.FillBounds,
+        modifier = GlanceModifier.fillMaxWidth().height(4.dp),
+    )
+}
+
+/** Relative days and ranges in the device's language. */
+object RelativeDay {
+    fun label(iso: String?, labels: WidgetSnapshot.Labels, today: LocalDate = LocalDate.now(), locale: Locale = Locale.getDefault()): String? {
+        val date = WidgetSnapshot.day(iso) ?: return null
+        val days = ChronoUnit.DAYS.between(today, date)
+        if (days == 0L) return labels.todayShort
+        if (days == 1L) return labels.tomorrowShort
+        val skeleton = if (days in 2..6) "EEE" else "EEEdMMM"
+        return DateTimeFormatter.ofPattern(DateFormat.getBestDateTimePattern(locale, skeleton), locale).format(date)
+    }
+
+    /** "1-9 Oct" in the device's own way of writing a range. */
+    fun range(context: Context, start: String, end: String): String? {
+        val from = WidgetSnapshot.day(start) ?: return null
+        val to = WidgetSnapshot.day(end) ?: return null
+        val zone = java.time.ZoneId.systemDefault()
+        val startMs = from.atStartOfDay(zone).toInstant().toEpochMilli()
+        // formatDateRange's end is exclusive: noon of the last day keeps it in the range.
+        val endMs = to.atTime(12, 0).atZone(zone).toInstant().toEpochMilli()
+        val flags = android.text.format.DateUtils.FORMAT_SHOW_DATE or android.text.format.DateUtils.FORMAT_ABBREV_MONTH or
+            android.text.format.DateUtils.FORMAT_NO_YEAR
+        return android.text.format.DateUtils.formatDateRange(context, startMs, endMs, flags)
+    }
+}
+
+/** Minutes after midnight, now. */
+fun nowMinutes(): Int = java.time.LocalTime.now().let { it.hour * 60 + it.minute }
+
+/** "#rrggbb" as a colour, null for anything else. */
+fun cssColor(css: String?): ColorProvider? {
+    val hex = css?.removePrefix("#") ?: return null
+    if (hex.length != 6) return null
+    val value = hex.toLongOrNull(16) ?: return null
+    return ColorProvider(Color(0xFF000000 or value))
+}

client/android/app/src/main/java/com/liketrek/trek/widget/WorldGrid.kt

@@ -0,0 +1,53 @@
+package com.liketrek.trek.widget
+
+/**
+ * The world as 76 by 34 dots from 80 degrees north to 58 south, each the ISO
+ * code of the country under it, ".." for sea. The same grid as the iOS widget
+ * (client/ios/App/TREKWidgets/WorldGrid.swift, generated from
+ * server/assets/atlas/admin0.geojson.gz); copy it over when that one changes.
+ */
+object WorldGrid {
+    const val COLUMNS = 76
+    val ROWS: List<String> = listOf(
+        "........................CACACA..CACACACACACA..GLGLGLGLGLGLGLGLGLGLGL............NONONO..................RU..........RURURU..............................",
+        "......................CACACACACA..CACACACACA........GLGLGLGLGLGLGLGL..............................RURU....RURURURURURURURURURURURURU..RURURU............",
+        "......USUSUSUSUSCACACACACACACACACACACACACACACACA....GLGLGLGLGLGLGL................NONONORURU....RURU..RURURURURURURURURURURURURURURURURURURURURURURURURU",
+        "RURU..USUSUSUSUSCACACACACACACACACACACACACACACACACA....GLGLGLGL....ISIS..........NOSESEFIRURURURURURURURURURURURURURURURURURURURURURURURURURURURURURURURU",
+        "......USUSUSUSUSCACACACACACACACACACACA....CACACACA....GLGL....................NONOSEFIFIRURURURURURURURURURURURURURURURURURURURURURURURURURURURURURURURU",
+        "........USUS......USCACACACACACACACACACA..CACACACA........................GB..NOSESELVLVRURURURURURURURURURURURURURURURURURURURURURURURU......RURU......",
+        "......US............CACACACACACACACACACACACACACACACA....................IEGBGBNLDEPLPLBYBYRURURURURURUKZKZRURURURURURURURURURURURURURURURU....RU........",
+        "......................CACACACACACACACACACACACACACACACA....................FRFRDEDECZPLUAUAUARURUKZKZKZKZKZKZKZKZRUMNMNMNMNRUMNCNCNRURURURU..............",
+        "........................USUSUSUSUSUSUSUSCACACAUSCA........................FRFRITITHRROROMDUARURURUKZKZKZKZKZKZCNCNMNMNMNMNMNCNCNCNCNRU..................",
+        "......................USUSUSUSUSUSUSUSUSUSUSUS..........................ESESES..ITITALBGTRTRTRGEAZTMTMUZKZKGKGCNCNCNCNCNCNCNCNCNCNCN..JPJP..............",
+        "........................USUSUSUSUSUSUSUSUSUS............................ESESDZDZ....GRTRTRTRTRIRIRIRIRTMTJTJCNCNCNCNCNCNCNCNCNCNKPKR..JP................",
+        "..........................USUSUSUSUSUSUSUSUS............................MAMADZDZTN..LY....LBIQIQIRIRIRAFAFPKINCNCNCNCNCNCNCNCNCNKRJPJP..................",
+        "..........................MXMXMXMXUSUS..US............................MADZDZDZDZLYLYLYEGEGSASAIQIRIRIRPKPKININNPCNCNCNCNCNCNCNCN........................",
+        "............................MXMXMXUS....US..........................EHEHMRDZDZDZLYLYLYEGEGSASASASAAEIRPKPKINININININMMCNCNCNCNCN........................",
+        "..............................MXMXMX..MXCUCUBS......................MRMRMRMLDZDZNETDLYSDSDSDSASASASAOM..INININININMMMMLAVNCN............................",
+        "................................MXMXMXMX..JM........................MRMRMRMLMLNENETDTDSDSDSDERYEYEOM......INININ....MMTHVN....PH........................",
+        "....................................GTSVNI....VE....................SNSNMLBFNENENGTDTDSDSDSDETYEYE........ININ......MMTHKH....PH........................",
+        "........................................CRPACOVEVEVE..................SLCIGHBJNGNGTDCFSSSSETETSOSO..........IN....IN....VN......PH......................",
+        "..........................................COCOCOVEGYSR..................CICI..NGCMCFCFCDSSKEETSOSO..................IDMY....MY..ID......................",
+        "..........................................ECCOBRBRBRBRBR........................GACGCDCDUGKEKESO......................ID..IDIDID........................",
+        "..........................................ECPEBRBRBRBRBRBRBR....................CGCDCDCDBITZKE........................IDIDIDIDID..IDIDIDPG..PG..........",
+        "..........................................PEBRBRBRBRBRBRBRBRBR..................AOAOCDCDTZTZTZ..........................IDIDID........IDPGPGPG..........",
+        "..........................................PEPEBOBRBRBRBRBRBRBR....................AOAOCDZMTZMZKM..................................AUAU....PG............",
+        "............................................PEBOBOBRBRBRBRBR....................AOAOAOZMMZMZMZMGMG..............................AUAUAU..AU..............",
+        "..............................................CLBOPYBRBRBRBR....................NANABWBWZWMZ..MGMG............................AUAUAUAUAUAUAU....FR......",
+        "..............................................CLARPYBRBRBR........................NABWBWZAMZ..MG............................AUAUAUAUAUAUAUAU............",
+        "..............................................ARARARBRBR..........................NAZAZAZA..................................AUAUAUAUAUAUAUAUAU..........",
+        "..............................................ARARARUY............................ZAZAZAZA..................................AUAUAUAUAUAUAUAUAU..........",
+        "............................................CLARARARUY..............................ZA......................................AU........AUAUAU............",
+        "............................................CLARARAR....................................................................................AU............NZ",
+        "............................................CLARAR......................................................................................AU........NZNZ..",
+        "............................................CLAR........................................................................................................",
+        "............................................CLAR........................................................................................................",
+        "..............................................CL........................................................................................................",
+    )
+
+    /** The country code of a dot, null for sea. */
+    fun code(row: Int, column: Int): String? {
+        val code = ROWS[row].substring(column * 2, column * 2 + 2)
+        return if (code == "..") null else code
+    }
+}

client/android/app/src/main/res/drawable/widget_scrim.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The shade over a trip's cover in its widget: darker towards the text at the bottom. -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <gradient
+        android:angle="270"
+        android:startColor="#59000000"
+        android:centerColor="#0D000000"
+        android:endColor="#A6000000" />
+</shape>

client/android/app/src/main/res/resources.properties

@@ -0,0 +1 @@
+unqualifiedResLocale=en-US

client/android/app/src/main/res/values-ar/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">رحلة</string>
+    <string name="widget_trip_description">عدّ تنازلي لرحلتك القادمة، ثم اليوم وما يليه أثناء السفر.</string>
+    <string name="widget_today_name">اليوم</string>
+    <string name="widget_today_description">خطة اليوم كخط زمني، مع الطقس والمحطة التالية.</string>
+    <string name="widget_bookings_name">الحجوزات</string>
+    <string name="widget_bookings_description">رحلاتك وقطاراتك وفنادقك وحجوزات المطاعم القادمة ومواعيدها.</string>
+    <string name="widget_todos_name">المهام</string>
+    <string name="widget_todos_description">ما تبقى للرحلة، ومدى تقدم تجهيز الأمتعة.</string>
+    <string name="widget_packing_name">قائمة الأمتعة</string>
+    <string name="widget_packing_description">مدى امتلاء الحقائب ووزنها وما الذي ما زال ناقصًا.</string>
+    <string name="widget_atlas_name">خريطة العالم</string>
+    <string name="widget_atlas_description">الدول التي زرتها مضيئة على الخريطة.</string>
+    <string name="widget_collab_name">مجموعة السفر</string>
+    <string name="widget_collab_description">من يرافقك وأحدث الرسائل والتصويت المفتوح.</string>
+    <string name="widget_intent_title">اختر الرحلة</string>
+    <string name="widget_intent_description">الرحلة التي تعرضها هذه الأداة.</string>
+    <string name="widget_intent_trip">الرحلة</string>
+    <string name="widget_intent_auto">تلقائي</string>
+    <string name="widget_intent_auto_hint">نفس رحلة لوحة التحكم</string>
+    <string name="share_title">إضافة إلى TREK</string>
+    <string name="share_cancel">إلغاء</string>
+    <string name="share_close">إغلاق</string>
+    <string name="share_trip">الرحلة</string>
+    <string name="share_no_trips">افتح TREK مرة واحدة وستظهر رحلاتك هنا.</string>
+    <string name="share_hint">يقرأ TREK الحجز ويضيفه إلى الرحلة.</string>
+    <string name="share_later">الاختيار لاحقًا</string>
+    <string name="share_add">إضافة</string>
+    <string name="share_add_to">إضافة إلى %1$s</string>
+    <string name="share_added">تمت الإضافة</string>
+    <string name="share_reading">جارٍ القراءة…</string>
+    <string name="share_too_large">هذا الملف أكبر من أن يُستورد.</string>
+    <string name="share_unsupported">لا يستطيع TREK استيراد هذا.</string>
+    <string name="share_failed">تعذّر تمرير هذا إلى TREK. حاول مرة أخرى.</string>
+    <string name="share_now">الآن</string>
+    <string name="share_past">انتهت</string>
+    <string name="share_tomorrow">غدًا</string>
+    <string name="share_in_days">بعد %1$d يومًا</string>
+    <string name="share_kind_pass">بطاقة Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">بريد</string>
+    <string name="share_kind_page">صفحة ويب</string>
+    <string name="share_kind_text">نص</string>
+    <string name="share_kind_image">صورة</string>
+    <string name="share_kind_file">ملف</string>
+    <string name="widget_empty">افتح TREK مرة واحدة وستظهر رحلاتك هنا.</string>
+    <string name="push_channel_chat">دردشة الرحلة</string>
+    <string name="push_channel_trips">تحديثات الرحلة</string>
+    <string name="push_channel_invites">الدعوات والمشاركات</string>
+    <string name="push_channel_name">عام</string>
+    <string name="push_channel_tripday">يوم السفر</string>
+    <string name="push_fallback_body">إشعار جديد</string>
+    <string name="push_channel_tripday_description">يوم الرحلة الجارية ومحطتها التالية.</string>
+</resources>

client/android/app/src/main/res/values-az/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Səyahət</string>
+    <string name="widget_trip_description">Növbəti səyahətə qədər günləri sayır, yolda isə günü və sonrakını göstərir.</string>
+    <string name="widget_today_name">Bu gün</string>
+    <string name="widget_today_description">Günün planı zaman xətti kimi, hava və növbəti dayanacaqla.</string>
+    <string name="widget_bookings_name">Bronlar</string>
+    <string name="widget_bookings_description">Növbəti uçuşlar, qatarlar, otellər və restoranlar, nə vaxt olduqları ilə.</string>
+    <string name="widget_todos_name">Tapşırıqlar</string>
+    <string name="widget_todos_description">Səyahət üçün hələ nəyin qaldığı və yığışmağın nə yerdə olduğu.</string>
+    <string name="widget_packing_name">Yük siyahısı</string>
+    <string name="widget_packing_description">Çantaların doluluğu, çəkisi və hələ nəyin çatışmadığı.</string>
+    <string name="widget_atlas_name">Dünya xəritəsi</string>
+    <string name="widget_atlas_description">Olduğun ölkələr xəritədə parlayır.</string>
+    <string name="widget_collab_name">Səyahət qrupu</string>
+    <string name="widget_collab_description">Kim gəlir, son mesajlar və açıq səsvermə.</string>
+    <string name="widget_intent_title">Səyahəti seç</string>
+    <string name="widget_intent_description">Bu vidcetin göstərdiyi səyahət.</string>
+    <string name="widget_intent_trip">Səyahət</string>
+    <string name="widget_intent_auto">Avtomatik</string>
+    <string name="widget_intent_auto_hint">İdarə panelindəki səyahət</string>
+    <string name="share_title">TREK-ə əlavə et</string>
+    <string name="share_cancel">Ləğv et</string>
+    <string name="share_close">Bağla</string>
+    <string name="share_trip">Səyahət</string>
+    <string name="share_no_trips">TREK-i bir dəfə açın, səyahətləriniz burada görünəcək.</string>
+    <string name="share_hint">TREK rezervasiyanı oxuyur və səyahətə əlavə edir.</string>
+    <string name="share_later">Sonra seç</string>
+    <string name="share_add">Əlavə et</string>
+    <string name="share_add_to">%1$s səyahətinə əlavə et</string>
+    <string name="share_added">Əlavə edildi</string>
+    <string name="share_reading">Oxunur…</string>
+    <string name="share_too_large">Bu fayl idxal üçün çox böyükdür.</string>
+    <string name="share_unsupported">TREK bunu idxal edə bilmir.</string>
+    <string name="share_failed">Bunu TREK-ə ötürmək alınmadı. Yenidən cəhd edin.</string>
+    <string name="share_now">İndi</string>
+    <string name="share_past">Keçib</string>
+    <string name="share_tomorrow">Sabah</string>
+    <string name="share_in_days">%1$d gün sonra</string>
+    <string name="share_kind_pass">Wallet kartı</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-poçt</string>
+    <string name="share_kind_page">Veb səhifə</string>
+    <string name="share_kind_text">Mətn</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Fayl</string>
+    <string name="widget_empty">TREK-i bir dəfə açın, səyahətləriniz burada görünəcək.</string>
+    <string name="push_channel_chat">Səyahət söhbəti</string>
+    <string name="push_channel_trips">Səyahət yenilikləri</string>
+    <string name="push_channel_invites">Dəvətlər və paylaşımlar</string>
+    <string name="push_channel_name">Ümumi</string>
+    <string name="push_channel_tripday">Səyahət günü</string>
+    <string name="push_fallback_body">Yeni bildiriş</string>
+    <string name="push_channel_tripday_description">Davam edən səyahətin günü və növbəti dayanacağı.</string>
+</resources>

client/android/app/src/main/res/values-b+zh+Hans/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">旅行</string>
+    <string name="widget_trip_description">倒数到下一次旅行，旅途中显示当天行程和接下来的安排。</string>
+    <string name="widget_today_name">今天</string>
+    <string name="widget_today_description">以时间线显示今天的计划，附带天气和下一站。</string>
+    <string name="widget_bookings_name">预订</string>
+    <string name="widget_bookings_description">你接下来的航班、火车、酒店和餐厅，以及时间。</string>
+    <string name="widget_todos_name">待办</string>
+    <string name="widget_todos_description">旅行还剩哪些事没做，以及行李收拾到哪一步。</string>
+    <string name="widget_packing_name">行李</string>
+    <string name="widget_packing_description">包装得多满、重量多少，以及还缺什么。</string>
+    <string name="widget_atlas_name">世界地图</string>
+    <string name="widget_atlas_description">你去过的国家在地图上亮起。</string>
+    <string name="widget_collab_name">旅行小组</string>
+    <string name="widget_collab_description">谁一起去、最新消息和进行中的投票。</string>
+    <string name="widget_intent_title">选择旅行</string>
+    <string name="widget_intent_description">此小组件显示的旅行。</string>
+    <string name="widget_intent_trip">旅行</string>
+    <string name="widget_intent_auto">自动</string>
+    <string name="widget_intent_auto_hint">与仪表板相同的旅行</string>
+    <string name="share_title">添加到 TREK</string>
+    <string name="share_cancel">取消</string>
+    <string name="share_close">关闭</string>
+    <string name="share_trip">行程</string>
+    <string name="share_no_trips">打开一次 TREK，你的行程就会显示在这里。</string>
+    <string name="share_hint">TREK 会读取预订并添加到行程中。</string>
+    <string name="share_later">稍后选择</string>
+    <string name="share_add">添加</string>
+    <string name="share_add_to">添加到 %1$s</string>
+    <string name="share_added">已添加</string>
+    <string name="share_reading">正在读取…</string>
+    <string name="share_too_large">此文件太大，无法导入。</string>
+    <string name="share_unsupported">TREK 无法导入此内容。</string>
+    <string name="share_failed">无法传给 TREK。请重试。</string>
+    <string name="share_now">进行中</string>
+    <string name="share_past">已结束</string>
+    <string name="share_tomorrow">明天</string>
+    <string name="share_in_days">%1$d 天后</string>
+    <string name="share_kind_pass">Wallet 卡券</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">邮件</string>
+    <string name="share_kind_page">网页</string>
+    <string name="share_kind_text">文本</string>
+    <string name="share_kind_image">照片</string>
+    <string name="share_kind_file">文件</string>
+    <string name="widget_empty">打开一次 TREK，你的行程就会显示在这里。</string>
+    <string name="push_channel_chat">行程聊天</string>
+    <string name="push_channel_trips">行程动态</string>
+    <string name="push_channel_invites">邀请与共享</string>
+    <string name="push_channel_name">常规</string>
+    <string name="push_channel_tripday">旅行日</string>
+    <string name="push_fallback_body">新通知</string>
+    <string name="push_channel_tripday_description">进行中行程的当天安排和下一站。</string>
+</resources>

client/android/app/src/main/res/values-b+zh+Hant/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">旅行</string>
+    <string name="widget_trip_description">倒數到下一次旅行，旅途中顯示當天行程與接下來的安排。</string>
+    <string name="widget_today_name">今天</string>
+    <string name="widget_today_description">以時間軸顯示今天的計畫，附上天氣與下一站。</string>
+    <string name="widget_bookings_name">預訂</string>
+    <string name="widget_bookings_description">你接下來的航班、火車、飯店與餐廳，以及時間。</string>
+    <string name="widget_todos_name">待辦</string>
+    <string name="widget_todos_description">旅行還剩哪些事沒做，以及行李整理到哪一步。</string>
+    <string name="widget_packing_name">行李</string>
+    <string name="widget_packing_description">包包裝得多滿、重量多少，以及還缺什麼。</string>
+    <string name="widget_atlas_name">世界地圖</string>
+    <string name="widget_atlas_description">你去過的國家在地圖上亮起。</string>
+    <string name="widget_collab_name">旅行小組</string>
+    <string name="widget_collab_description">誰一起去、最新訊息與進行中的投票。</string>
+    <string name="widget_intent_title">選擇旅行</string>
+    <string name="widget_intent_description">此小工具顯示的旅行。</string>
+    <string name="widget_intent_trip">旅行</string>
+    <string name="widget_intent_auto">自動</string>
+    <string name="widget_intent_auto_hint">與儀表板相同的旅行</string>
+    <string name="share_title">加入 TREK</string>
+    <string name="share_cancel">取消</string>
+    <string name="share_close">關閉</string>
+    <string name="share_trip">行程</string>
+    <string name="share_no_trips">開啟一次 TREK，你的行程就會顯示在這裡。</string>
+    <string name="share_hint">TREK 會讀取訂位並加入行程。</string>
+    <string name="share_later">稍後選擇</string>
+    <string name="share_add">加入</string>
+    <string name="share_add_to">加入 %1$s</string>
+    <string name="share_added">已加入</string>
+    <string name="share_reading">正在讀取…</string>
+    <string name="share_too_large">此檔案太大，無法匯入。</string>
+    <string name="share_unsupported">TREK 無法匯入此內容。</string>
+    <string name="share_failed">無法傳給 TREK。請重試。</string>
+    <string name="share_now">進行中</string>
+    <string name="share_past">已結束</string>
+    <string name="share_tomorrow">明天</string>
+    <string name="share_in_days">%1$d 天後</string>
+    <string name="share_kind_pass">Wallet 票卡</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">郵件</string>
+    <string name="share_kind_page">網頁</string>
+    <string name="share_kind_text">文字</string>
+    <string name="share_kind_image">照片</string>
+    <string name="share_kind_file">檔案</string>
+    <string name="widget_empty">開啟一次 TREK，你的行程就會顯示在這裡。</string>
+    <string name="push_channel_chat">行程聊天</string>
+    <string name="push_channel_trips">行程動態</string>
+    <string name="push_channel_invites">邀請與共享</string>
+    <string name="push_channel_name">一般</string>
+    <string name="push_channel_tripday">旅行日</string>
+    <string name="push_fallback_body">新通知</string>
+    <string name="push_channel_tripday_description">進行中行程的當天安排與下一站。</string>
+</resources>

client/android/app/src/main/res/values-ca/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Viatge</string>
+    <string name="widget_trip_description">Compta els dies fins al proper viatge i, durant el viatge, mostra el dia i el que ve després.</string>
+    <string name="widget_today_name">Avui</string>
+    <string name="widget_today_description">El pla del dia com a línia de temps, amb el temps i la propera parada.</string>
+    <string name="widget_bookings_name">Reserves</string>
+    <string name="widget_bookings_description">Els teus propers vols, trens, hotels i taules, i quan toquen.</string>
+    <string name="widget_todos_name">Tasques</string>
+    <string name="widget_todos_description">El que encara queda per al viatge i com va l\'equipatge.</string>
+    <string name="widget_packing_name">Equipatge</string>
+    <string name="widget_packing_description">Com de plenes són les maletes, el pes i el que encara falta.</string>
+    <string name="widget_atlas_name">Mapa del món</string>
+    <string name="widget_atlas_description">Els països on has estat, brillant al mapa.</string>
+    <string name="widget_collab_name">Grup de viatge</string>
+    <string name="widget_collab_description">Qui ve, els darrers missatges i la votació oberta.</string>
+    <string name="widget_intent_title">Tria el viatge</string>
+    <string name="widget_intent_description">El viatge que mostra aquest giny.</string>
+    <string name="widget_intent_trip">Viatge</string>
+    <string name="widget_intent_auto">Automàtic</string>
+    <string name="widget_intent_auto_hint">El mateix viatge que el tauler</string>
+    <string name="share_title">Afegeix a TREK</string>
+    <string name="share_cancel">Cancel·la</string>
+    <string name="share_close">Tanca</string>
+    <string name="share_trip">Viatge</string>
+    <string name="share_no_trips">Obre TREK una vegada i aquí apareixeran els teus viatges.</string>
+    <string name="share_hint">TREK llegeix la reserva i l’afegeix al viatge.</string>
+    <string name="share_later">Tria més tard</string>
+    <string name="share_add">Afegeix</string>
+    <string name="share_add_to">Afegeix a %1$s</string>
+    <string name="share_added">Afegit</string>
+    <string name="share_reading">Llegint…</string>
+    <string name="share_too_large">Aquest fitxer és massa gran per importar-lo.</string>
+    <string name="share_unsupported">TREK no pot importar això.</string>
+    <string name="share_failed">No s’ha pogut passar a TREK. Torna-ho a provar.</string>
+    <string name="share_now">Ara</string>
+    <string name="share_past">Passat</string>
+    <string name="share_tomorrow">Demà</string>
+    <string name="share_in_days">D’aquí a %1$d dies</string>
+    <string name="share_kind_pass">Passi de Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Correu</string>
+    <string name="share_kind_page">Pàgina web</string>
+    <string name="share_kind_text">Text</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Fitxer</string>
+    <string name="widget_empty">Obre TREK una vegada i aquí apareixeran els teus viatges.</string>
+    <string name="push_channel_chat">Xat del viatge</string>
+    <string name="push_channel_trips">Novetats del viatge</string>
+    <string name="push_channel_invites">Invitacions i comparticions</string>
+    <string name="push_channel_name">General</string>
+    <string name="push_channel_tripday">Dia de viatge</string>
+    <string name="push_fallback_body">Notificació nova</string>
+    <string name="push_channel_tripday_description">El dia d\'un viatge en curs i la seva propera parada.</string>
+</resources>

client/android/app/src/main/res/values-cs/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Cesta</string>
+    <string name="widget_trip_description">Odpočítává dny do další cesty a během ní ukazuje den a co přijde dál.</string>
+    <string name="widget_today_name">Dnes</string>
+    <string name="widget_today_description">Plán dne jako časová osa, s počasím a další zastávkou.</string>
+    <string name="widget_bookings_name">Rezervace</string>
+    <string name="widget_bookings_description">Tvoje další lety, vlaky, hotely a stoly, a kdy tě čekají.</string>
+    <string name="widget_todos_name">Úkoly</string>
+    <string name="widget_todos_description">Co ještě zbývá k cestě a jak daleko je balení.</string>
+    <string name="widget_packing_name">Balení</string>
+    <string name="widget_packing_description">Jak plná jsou zavazadla, jejich váha a co ještě chybí.</string>
+    <string name="widget_atlas_name">Mapa světa</string>
+    <string name="widget_atlas_description">Země, kde jsi byl, zářící na mapě.</string>
+    <string name="widget_collab_name">Cestovní skupina</string>
+    <string name="widget_collab_description">Kdo jede s tebou, nejnovější zprávy a otevřené hlasování.</string>
+    <string name="widget_intent_title">Vybrat cestu</string>
+    <string name="widget_intent_description">Cesta, kterou tento widget zobrazuje.</string>
+    <string name="widget_intent_trip">Cesta</string>
+    <string name="widget_intent_auto">Automaticky</string>
+    <string name="widget_intent_auto_hint">Stejná cesta jako na nástěnce</string>
+    <string name="share_title">Přidat do TREK</string>
+    <string name="share_cancel">Zrušit</string>
+    <string name="share_close">Zavřít</string>
+    <string name="share_trip">Cesta</string>
+    <string name="share_no_trips">Jednou otevřete TREK a vaše cesty se zobrazí zde.</string>
+    <string name="share_hint">TREK přečte rezervaci a přidá ji k cestě.</string>
+    <string name="share_later">Vybrat později</string>
+    <string name="share_add">Přidat</string>
+    <string name="share_add_to">Přidat do %1$s</string>
+    <string name="share_added">Přidáno</string>
+    <string name="share_reading">Načítání…</string>
+    <string name="share_too_large">Tento soubor je pro import příliš velký.</string>
+    <string name="share_unsupported">Tohle TREK neumí importovat.</string>
+    <string name="share_failed">Nepodařilo se to předat do TREK. Zkuste to znovu.</string>
+    <string name="share_now">Teď</string>
+    <string name="share_past">Proběhla</string>
+    <string name="share_tomorrow">Zítra</string>
+    <string name="share_in_days">Za %1$d dní</string>
+    <string name="share_kind_pass">Karta Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Webová stránka</string>
+    <string name="share_kind_text">Text</string>
+    <string name="share_kind_image">Fotka</string>
+    <string name="share_kind_file">Soubor</string>
+    <string name="widget_empty">Jednou otevřete TREK a vaše cesty se zobrazí zde.</string>
+    <string name="push_channel_chat">Chat výletu</string>
+    <string name="push_channel_trips">Novinky z výletu</string>
+    <string name="push_channel_invites">Pozvánky a sdílení</string>
+    <string name="push_channel_name">Obecné</string>
+    <string name="push_channel_tripday">Cestovní den</string>
+    <string name="push_fallback_body">Nové oznámení</string>
+    <string name="push_channel_tripday_description">Den probíhajícího výletu a jeho další zastávka.</string>
+</resources>

client/android/app/src/main/res/values-de/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Reise</string>
+    <string name="widget_trip_description">Zählt die Tage bis zur nächsten Reise und zeigt unterwegs den Tag und was als Nächstes kommt.</string>
+    <string name="widget_today_name">Heute</string>
+    <string name="widget_today_description">Der Tagesplan als Zeitleiste, mit dem Wetter und dem nächsten Stopp.</string>
+    <string name="widget_bookings_name">Buchungen</string>
+    <string name="widget_bookings_description">Deine nächsten Flüge, Züge, Hotels und Tische, und wann sie anstehen.</string>
+    <string name="widget_todos_name">To-dos</string>
+    <string name="widget_todos_description">Was für die Reise noch offen ist und wie weit das Packen ist.</string>
+    <string name="widget_packing_name">Packliste</string>
+    <string name="widget_packing_description">Wie voll die Taschen sind, ihr Gewicht und was noch fehlt.</string>
+    <string name="widget_atlas_name">Weltkarte</string>
+    <string name="widget_atlas_description">Die Länder, in denen du warst, leuchtend auf der Karte.</string>
+    <string name="widget_collab_name">Reisegruppe</string>
+    <string name="widget_collab_description">Wer mitreist, die neuesten Nachrichten und die offene Abstimmung.</string>
+    <string name="widget_intent_title">Reise wählen</string>
+    <string name="widget_intent_description">Die Reise, die dieses Widget zeigt.</string>
+    <string name="widget_intent_trip">Reise</string>
+    <string name="widget_intent_auto">Automatisch</string>
+    <string name="widget_intent_auto_hint">Dieselbe Reise wie im Dashboard</string>
+    <string name="share_title">Zu TREK hinzufügen</string>
+    <string name="share_cancel">Abbrechen</string>
+    <string name="share_close">Schließen</string>
+    <string name="share_trip">Reise</string>
+    <string name="share_no_trips">Öffne TREK einmal, dann erscheinen hier deine Reisen.</string>
+    <string name="share_hint">TREK liest die Buchung und trägt sie in die Reise ein.</string>
+    <string name="share_later">Später wählen</string>
+    <string name="share_add">Hinzufügen</string>
+    <string name="share_add_to">Zu %1$s hinzufügen</string>
+    <string name="share_added">Hinzugefügt</string>
+    <string name="share_reading">Wird gelesen…</string>
+    <string name="share_too_large">Diese Datei ist zu groß für den Import.</string>
+    <string name="share_unsupported">Das kann TREK nicht importieren.</string>
+    <string name="share_failed">Das konnte nicht an TREK übergeben werden. Bitte versuch es erneut.</string>
+    <string name="share_now">Läuft</string>
+    <string name="share_past">Vorbei</string>
+    <string name="share_tomorrow">Morgen</string>
+    <string name="share_in_days">In %1$d Tagen</string>
+    <string name="share_kind_pass">Wallet-Pass</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-Mail</string>
+    <string name="share_kind_page">Webseite</string>
+    <string name="share_kind_text">Text</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Datei</string>
+    <string name="widget_empty">Öffne TREK einmal, dann erscheinen hier deine Reisen.</string>
+    <string name="push_channel_chat">Reise-Chat</string>
+    <string name="push_channel_trips">Neues zur Reise</string>
+    <string name="push_channel_invites">Einladungen und Freigaben</string>
+    <string name="push_channel_name">Allgemein</string>
+    <string name="push_channel_tripday">Reisetag</string>
+    <string name="push_fallback_body">Neue Benachrichtigung</string>
+    <string name="push_channel_tripday_description">Der Tag einer laufenden Reise und der nächste Stopp.</string>
+</resources>

client/android/app/src/main/res/values-el/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Ταξίδι</string>
+    <string name="widget_trip_description">Μετρά αντίστροφα ως το επόμενο ταξίδι και στη διάρκειά του δείχνει τη μέρα και τι ακολουθεί.</string>
+    <string name="widget_today_name">Σήμερα</string>
+    <string name="widget_today_description">Το πρόγραμμα της ημέρας ως χρονολόγιο, με τον καιρό και την επόμενη στάση.</string>
+    <string name="widget_bookings_name">Κρατήσεις</string>
+    <string name="widget_bookings_description">Οι επόμενες πτήσεις, τα τρένα, τα ξενοδοχεία και τα τραπέζια σου, και πότε είναι.</string>
+    <string name="widget_todos_name">Εκκρεμότητες</string>
+    <string name="widget_todos_description">Τι μένει ακόμα για το ταξίδι και πόσο έχει προχωρήσει το πακετάρισμα.</string>
+    <string name="widget_packing_name">Αποσκευές</string>
+    <string name="widget_packing_description">Πόσο γεμάτες είναι οι τσάντες, το βάρος τους και τι λείπει ακόμα.</string>
+    <string name="widget_atlas_name">Παγκόσμιος χάρτης</string>
+    <string name="widget_atlas_description">Οι χώρες που έχεις επισκεφθεί, φωτεινές στον χάρτη.</string>
+    <string name="widget_collab_name">Ομάδα ταξιδιού</string>
+    <string name="widget_collab_description">Ποιος έρχεται, τα τελευταία μηνύματα και η ανοιχτή ψηφοφορία.</string>
+    <string name="widget_intent_title">Επιλογή ταξιδιού</string>
+    <string name="widget_intent_description">Το ταξίδι που δείχνει αυτό το widget.</string>
+    <string name="widget_intent_trip">Ταξίδι</string>
+    <string name="widget_intent_auto">Αυτόματα</string>
+    <string name="widget_intent_auto_hint">Το ίδιο ταξίδι με τον πίνακα</string>
+    <string name="share_title">Προσθήκη στο TREK</string>
+    <string name="share_cancel">Ακύρωση</string>
+    <string name="share_close">Κλείσιμο</string>
+    <string name="share_trip">Ταξίδι</string>
+    <string name="share_no_trips">Ανοίξτε το TREK μία φορά και τα ταξίδια σας θα εμφανιστούν εδώ.</string>
+    <string name="share_hint">Το TREK διαβάζει την κράτηση και την προσθέτει στο ταξίδι.</string>
+    <string name="share_later">Επιλογή αργότερα</string>
+    <string name="share_add">Προσθήκη</string>
+    <string name="share_add_to">Προσθήκη στο %1$s</string>
+    <string name="share_added">Προστέθηκε</string>
+    <string name="share_reading">Ανάγνωση…</string>
+    <string name="share_too_large">Το αρχείο είναι πολύ μεγάλο για εισαγωγή.</string>
+    <string name="share_unsupported">Το TREK δεν μπορεί να το εισαγάγει.</string>
+    <string name="share_failed">Δεν ήταν δυνατή η μεταφορά στο TREK. Δοκιμάστε ξανά.</string>
+    <string name="share_now">Τώρα</string>
+    <string name="share_past">Παρελθόν</string>
+    <string name="share_tomorrow">Αύριο</string>
+    <string name="share_in_days">Σε %1$d ημέρες</string>
+    <string name="share_kind_pass">Κάρτα Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Email</string>
+    <string name="share_kind_page">Ιστοσελίδα</string>
+    <string name="share_kind_text">Κείμενο</string>
+    <string name="share_kind_image">Φωτογραφία</string>
+    <string name="share_kind_file">Αρχείο</string>
+    <string name="widget_empty">Ανοίξτε το TREK μία φορά και τα ταξίδια σας θα εμφανιστούν εδώ.</string>
+    <string name="push_channel_chat">Συνομιλία ταξιδιού</string>
+    <string name="push_channel_trips">Ενημερώσεις ταξιδιού</string>
+    <string name="push_channel_invites">Προσκλήσεις και κοινοποιήσεις</string>
+    <string name="push_channel_name">Γενικά</string>
+    <string name="push_channel_tripday">Ημέρα ταξιδιού</string>
+    <string name="push_fallback_body">Νέα ειδοποίηση</string>
+    <string name="push_channel_tripday_description">Η ημέρα ενός ταξιδιού σε εξέλιξη και η επόμενη στάση του.</string>
+</resources>

client/android/app/src/main/res/values-es/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Viaje</string>
+    <string name="widget_trip_description">Cuenta los días hasta tu próximo viaje y, durante él, muestra el día y lo que sigue.</string>
+    <string name="widget_today_name">Hoy</string>
+    <string name="widget_today_description">El plan del día como línea de tiempo, con el tiempo y la próxima parada.</string>
+    <string name="widget_bookings_name">Reservas</string>
+    <string name="widget_bookings_description">Tus próximos vuelos, trenes, hoteles y mesas, y cuándo tocan.</string>
+    <string name="widget_todos_name">Tareas</string>
+    <string name="widget_todos_description">Lo que aún queda para el viaje y cómo va la maleta.</string>
+    <string name="widget_packing_name">Equipaje</string>
+    <string name="widget_packing_description">Lo llenas que van las maletas, su peso y lo que aún falta.</string>
+    <string name="widget_atlas_name">Mapa del mundo</string>
+    <string name="widget_atlas_description">Los países donde has estado, brillando en el mapa.</string>
+    <string name="widget_collab_name">Grupo de viaje</string>
+    <string name="widget_collab_description">Quién viene, los últimos mensajes y la votación abierta.</string>
+    <string name="widget_intent_title">Elegir viaje</string>
+    <string name="widget_intent_description">El viaje que muestra este widget.</string>
+    <string name="widget_intent_trip">Viaje</string>
+    <string name="widget_intent_auto">Automático</string>
+    <string name="widget_intent_auto_hint">El mismo viaje que el panel</string>
+    <string name="share_title">Añadir a TREK</string>
+    <string name="share_cancel">Cancelar</string>
+    <string name="share_close">Cerrar</string>
+    <string name="share_trip">Viaje</string>
+    <string name="share_no_trips">Abre TREK una vez y tus viajes aparecerán aquí.</string>
+    <string name="share_hint">TREK lee la reserva y la añade al viaje.</string>
+    <string name="share_later">Elegir después</string>
+    <string name="share_add">Añadir</string>
+    <string name="share_add_to">Añadir a %1$s</string>
+    <string name="share_added">Añadido</string>
+    <string name="share_reading">Leyendo…</string>
+    <string name="share_too_large">Este archivo es demasiado grande para importarlo.</string>
+    <string name="share_unsupported">TREK no puede importar esto.</string>
+    <string name="share_failed">No se pudo pasar a TREK. Inténtalo de nuevo.</string>
+    <string name="share_now">En curso</string>
+    <string name="share_past">Pasado</string>
+    <string name="share_tomorrow">Mañana</string>
+    <string name="share_in_days">En %1$d días</string>
+    <string name="share_kind_pass">Pase de Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Correo</string>
+    <string name="share_kind_page">Página web</string>
+    <string name="share_kind_text">Texto</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Archivo</string>
+    <string name="widget_empty">Abre TREK una vez y tus viajes aparecerán aquí.</string>
+    <string name="push_channel_chat">Chat del viaje</string>
+    <string name="push_channel_trips">Novedades del viaje</string>
+    <string name="push_channel_invites">Invitaciones y compartidos</string>
+    <string name="push_channel_name">General</string>
+    <string name="push_channel_tripday">Día de viaje</string>
+    <string name="push_fallback_body">Notificación nueva</string>
+    <string name="push_channel_tripday_description">El día de un viaje en curso y su próxima parada.</string>
+</resources>

client/android/app/src/main/res/values-et/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Reis</string>
+    <string name="widget_trip_description">Loeb päevi järgmise reisini ja näitab reisi ajal päeva ning seda, mis järgmisena tuleb.</string>
+    <string name="widget_today_name">Täna</string>
+    <string name="widget_today_description">Päeva plaan ajajoonena, koos ilma ja järgmise peatusega.</string>
+    <string name="widget_bookings_name">Broneeringud</string>
+    <string name="widget_bookings_description">Sinu järgmised lennud, rongid, hotellid ja lauad ning millal need on.</string>
+    <string name="widget_todos_name">Ülesanded</string>
+    <string name="widget_todos_description">Mis reisi jaoks veel tegemata on ja kui kaugel pakkimine on.</string>
+    <string name="widget_packing_name">Pakkimine</string>
+    <string name="widget_packing_description">Kui täis kotid on, nende kaal ja mis veel puudu on.</string>
+    <string name="widget_atlas_name">Maailmakaart</string>
+    <string name="widget_atlas_description">Riigid, kus oled käinud, kaardil helendamas.</string>
+    <string name="widget_collab_name">Reisiseltskond</string>
+    <string name="widget_collab_description">Kes tuleb kaasa, viimased sõnumid ja avatud hääletus.</string>
+    <string name="widget_intent_title">Vali reis</string>
+    <string name="widget_intent_description">Reis, mida see vidin näitab.</string>
+    <string name="widget_intent_trip">Reis</string>
+    <string name="widget_intent_auto">Automaatne</string>
+    <string name="widget_intent_auto_hint">Sama reis mis töölaual</string>
+    <string name="share_title">Lisa TREK-i</string>
+    <string name="share_cancel">Tühista</string>
+    <string name="share_close">Sulge</string>
+    <string name="share_trip">Reis</string>
+    <string name="share_no_trips">Ava TREK korra ja sinu reisid ilmuvad siia.</string>
+    <string name="share_hint">TREK loeb broneeringu ja lisab selle reisile.</string>
+    <string name="share_later">Vali hiljem</string>
+    <string name="share_add">Lisa</string>
+    <string name="share_add_to">Lisa reisile %1$s</string>
+    <string name="share_added">Lisatud</string>
+    <string name="share_reading">Loen…</string>
+    <string name="share_too_large">See fail on importimiseks liiga suur.</string>
+    <string name="share_unsupported">TREK ei saa seda importida.</string>
+    <string name="share_failed">Seda ei õnnestunud TREK-ile üle anda. Proovi uuesti.</string>
+    <string name="share_now">Praegu</string>
+    <string name="share_past">Möödas</string>
+    <string name="share_tomorrow">Homme</string>
+    <string name="share_in_days">%1$d päeva pärast</string>
+    <string name="share_kind_pass">Wallet’i pass</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-kiri</string>
+    <string name="share_kind_page">Veebileht</string>
+    <string name="share_kind_text">Tekst</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Fail</string>
+    <string name="widget_empty">Ava TREK korra ja sinu reisid ilmuvad siia.</string>
+    <string name="push_channel_chat">Reisi vestlus</string>
+    <string name="push_channel_trips">Reisi uudised</string>
+    <string name="push_channel_invites">Kutsed ja jagamised</string>
+    <string name="push_channel_name">Üldine</string>
+    <string name="push_channel_tripday">Reisipäev</string>
+    <string name="push_fallback_body">Uus teavitus</string>
+    <string name="push_channel_tripday_description">Käimasoleva reisi päev ja järgmine peatus.</string>
+</resources>

client/android/app/src/main/res/values-fr/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Voyage</string>
+    <string name="widget_trip_description">Compte les jours jusqu\'au prochain voyage, puis montre la journée et la suite pendant le voyage.</string>
+    <string name="widget_today_name">Aujourd\'hui</string>
+    <string name="widget_today_description">Le programme du jour en frise, avec la météo et la prochaine étape.</string>
+    <string name="widget_bookings_name">Réservations</string>
+    <string name="widget_bookings_description">Vos prochains vols, trains, hôtels et tables, et quand ils arrivent.</string>
+    <string name="widget_todos_name">À faire</string>
+    <string name="widget_todos_description">Ce qui reste à faire pour le voyage et où en sont les bagages.</string>
+    <string name="widget_packing_name">Bagages</string>
+    <string name="widget_packing_description">Le remplissage des sacs, leur poids et ce qui manque encore.</string>
+    <string name="widget_atlas_name">Carte du monde</string>
+    <string name="widget_atlas_description">Les pays où vous êtes allé, illuminés sur la carte.</string>
+    <string name="widget_collab_name">Groupe de voyage</string>
+    <string name="widget_collab_description">Qui vient, les derniers messages et le sondage ouvert.</string>
+    <string name="widget_intent_title">Choisir le voyage</string>
+    <string name="widget_intent_description">Le voyage affiché par ce widget.</string>
+    <string name="widget_intent_trip">Voyage</string>
+    <string name="widget_intent_auto">Automatique</string>
+    <string name="widget_intent_auto_hint">Le même voyage que le tableau de bord</string>
+    <string name="share_title">Ajouter à TREK</string>
+    <string name="share_cancel">Annuler</string>
+    <string name="share_close">Fermer</string>
+    <string name="share_trip">Voyage</string>
+    <string name="share_no_trips">Ouvrez TREK une fois et vos voyages apparaîtront ici.</string>
+    <string name="share_hint">TREK lit la réservation et l’ajoute au voyage.</string>
+    <string name="share_later">Choisir plus tard</string>
+    <string name="share_add">Ajouter</string>
+    <string name="share_add_to">Ajouter à %1$s</string>
+    <string name="share_added">Ajouté</string>
+    <string name="share_reading">Lecture…</string>
+    <string name="share_too_large">Ce fichier est trop volumineux pour être importé.</string>
+    <string name="share_unsupported">TREK ne peut pas importer ceci.</string>
+    <string name="share_failed">Impossible de transmettre ceci à TREK. Réessayez.</string>
+    <string name="share_now">En cours</string>
+    <string name="share_past">Passé</string>
+    <string name="share_tomorrow">Demain</string>
+    <string name="share_in_days">Dans %1$d jours</string>
+    <string name="share_kind_pass">Carte Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Page web</string>
+    <string name="share_kind_text">Texte</string>
+    <string name="share_kind_image">Photo</string>
+    <string name="share_kind_file">Fichier</string>
+    <string name="widget_empty">Ouvrez TREK une fois et vos voyages apparaîtront ici.</string>
+    <string name="push_channel_chat">Discussion du voyage</string>
+    <string name="push_channel_trips">Nouvelles du voyage</string>
+    <string name="push_channel_invites">Invitations et partages</string>
+    <string name="push_channel_name">Général</string>
+    <string name="push_channel_tripday">Jour de voyage</string>
+    <string name="push_fallback_body">Nouvelle notification</string>
+    <string name="push_channel_tripday_description">La journée d\'un voyage en cours et sa prochaine étape.</string>
+</resources>

client/android/app/src/main/res/values-hu/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Utazás</string>
+    <string name="widget_trip_description">Visszaszámol a következő utazásig, útközben pedig a napot és a következő programot mutatja.</string>
+    <string name="widget_today_name">Ma</string>
+    <string name="widget_today_description">A nap terve idővonalon, az időjárással és a következő megállóval.</string>
+    <string name="widget_bookings_name">Foglalások</string>
+    <string name="widget_bookings_description">A következő járataid, vonataid, szállásaid és asztalfoglalásaid, és hogy mikor esedékesek.</string>
+    <string name="widget_todos_name">Teendők</string>
+    <string name="widget_todos_description">Ami még hátravan az utazáshoz, és hol tart a csomagolás.</string>
+    <string name="widget_packing_name">Csomagolás</string>
+    <string name="widget_packing_description">Mennyire telik a táska, a súlya, és mi hiányzik még.</string>
+    <string name="widget_atlas_name">Világtérkép</string>
+    <string name="widget_atlas_description">Az országok, ahol jártál, világítva a térképen.</string>
+    <string name="widget_collab_name">Útitársak</string>
+    <string name="widget_collab_description">Ki jön veled, a legújabb üzenetek és a nyitott szavazás.</string>
+    <string name="widget_intent_title">Utazás választása</string>
+    <string name="widget_intent_description">Az utazás, amelyet ez a widget mutat.</string>
+    <string name="widget_intent_trip">Utazás</string>
+    <string name="widget_intent_auto">Automatikus</string>
+    <string name="widget_intent_auto_hint">Ugyanaz az utazás, mint az irányítópulton</string>
+    <string name="share_title">Hozzáadás a TREK-hez</string>
+    <string name="share_cancel">Mégse</string>
+    <string name="share_close">Bezárás</string>
+    <string name="share_trip">Utazás</string>
+    <string name="share_no_trips">Nyisd meg egyszer a TREK-et, és itt megjelennek az utazásaid.</string>
+    <string name="share_hint">A TREK beolvassa a foglalást, és hozzáadja az utazáshoz.</string>
+    <string name="share_later">Később választok</string>
+    <string name="share_add">Hozzáadás</string>
+    <string name="share_add_to">Hozzáadás ehhez: %1$s</string>
+    <string name="share_added">Hozzáadva</string>
+    <string name="share_reading">Olvasás…</string>
+    <string name="share_too_large">Ez a fájl túl nagy az importáláshoz.</string>
+    <string name="share_unsupported">Ezt a TREK nem tudja importálni.</string>
+    <string name="share_failed">Nem sikerült átadni a TREK-nek. Próbáld újra.</string>
+    <string name="share_now">Most</string>
+    <string name="share_past">Elmúlt</string>
+    <string name="share_tomorrow">Holnap</string>
+    <string name="share_in_days">%1$d nap múlva</string>
+    <string name="share_kind_pass">Wallet-kártya</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Weboldal</string>
+    <string name="share_kind_text">Szöveg</string>
+    <string name="share_kind_image">Fotó</string>
+    <string name="share_kind_file">Fájl</string>
+    <string name="widget_empty">Nyisd meg egyszer a TREK-et, és itt megjelennek az utazásaid.</string>
+    <string name="push_channel_chat">Utazási csevegés</string>
+    <string name="push_channel_trips">Utazási hírek</string>
+    <string name="push_channel_invites">Meghívások és megosztások</string>
+    <string name="push_channel_name">Általános</string>
+    <string name="push_channel_tripday">Utazási nap</string>
+    <string name="push_fallback_body">Új értesítés</string>
+    <string name="push_channel_tripday_description">Egy folyamatban lévő utazás napja és a következő megálló.</string>
+</resources>

client/android/app/src/main/res/values-in/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Perjalanan</string>
+    <string name="widget_trip_description">Menghitung mundur ke perjalanan berikutnya, lalu menampilkan hari dan apa yang berikutnya.</string>
+    <string name="widget_today_name">Hari ini</string>
+    <string name="widget_today_description">Rencana hari ini sebagai linimasa, dengan cuaca dan perhentian berikutnya.</string>
+    <string name="widget_bookings_name">Pemesanan</string>
+    <string name="widget_bookings_description">Penerbangan, kereta, hotel, dan meja berikutnya, beserta waktunya.</string>
+    <string name="widget_todos_name">Tugas</string>
+    <string name="widget_todos_description">Yang masih tersisa untuk perjalanan dan sejauh mana persiapan barang.</string>
+    <string name="widget_packing_name">Barang bawaan</string>
+    <string name="widget_packing_description">Seberapa penuh tas, beratnya, dan yang masih kurang.</string>
+    <string name="widget_atlas_name">Peta dunia</string>
+    <string name="widget_atlas_description">Negara yang pernah kamu kunjungi, bersinar di peta.</string>
+    <string name="widget_collab_name">Rombongan</string>
+    <string name="widget_collab_description">Siapa yang ikut, pesan terbaru, dan polling yang terbuka.</string>
+    <string name="widget_intent_title">Pilih perjalanan</string>
+    <string name="widget_intent_description">Perjalanan yang ditampilkan widget ini.</string>
+    <string name="widget_intent_trip">Perjalanan</string>
+    <string name="widget_intent_auto">Otomatis</string>
+    <string name="widget_intent_auto_hint">Perjalanan yang sama dengan dasbor</string>
+    <string name="share_title">Tambahkan ke TREK</string>
+    <string name="share_cancel">Batal</string>
+    <string name="share_close">Tutup</string>
+    <string name="share_trip">Perjalanan</string>
+    <string name="share_no_trips">Buka TREK sekali dan perjalanan Anda akan muncul di sini.</string>
+    <string name="share_hint">TREK membaca pemesanan dan menambahkannya ke perjalanan.</string>
+    <string name="share_later">Pilih nanti</string>
+    <string name="share_add">Tambahkan</string>
+    <string name="share_add_to">Tambahkan ke %1$s</string>
+    <string name="share_added">Ditambahkan</string>
+    <string name="share_reading">Membaca…</string>
+    <string name="share_too_large">File ini terlalu besar untuk diimpor.</string>
+    <string name="share_unsupported">TREK tidak dapat mengimpor ini.</string>
+    <string name="share_failed">Tidak dapat diteruskan ke TREK. Silakan coba lagi.</string>
+    <string name="share_now">Sekarang</string>
+    <string name="share_past">Lewat</string>
+    <string name="share_tomorrow">Besok</string>
+    <string name="share_in_days">Dalam %1$d hari</string>
+    <string name="share_kind_pass">Pass Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Email</string>
+    <string name="share_kind_page">Halaman web</string>
+    <string name="share_kind_text">Teks</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">File</string>
+    <string name="widget_empty">Buka TREK sekali dan perjalanan Anda akan muncul di sini.</string>
+    <string name="push_channel_chat">Obrolan perjalanan</string>
+    <string name="push_channel_trips">Kabar perjalanan</string>
+    <string name="push_channel_invites">Undangan dan berbagi</string>
+    <string name="push_channel_name">Umum</string>
+    <string name="push_channel_tripday">Hari perjalanan</string>
+    <string name="push_fallback_body">Notifikasi baru</string>
+    <string name="push_channel_tripday_description">Hari dari perjalanan yang berlangsung dan perhentian berikutnya.</string>
+</resources>

client/android/app/src/main/res/values-it/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Viaggio</string>
+    <string name="widget_trip_description">Conta i giorni al prossimo viaggio e durante il viaggio mostra la giornata e cosa viene dopo.</string>
+    <string name="widget_today_name">Oggi</string>
+    <string name="widget_today_description">Il programma del giorno come linea del tempo, con il meteo e la prossima tappa.</string>
+    <string name="widget_bookings_name">Prenotazioni</string>
+    <string name="widget_bookings_description">I tuoi prossimi voli, treni, hotel e tavoli, e quando sono.</string>
+    <string name="widget_todos_name">Da fare</string>
+    <string name="widget_todos_description">Cosa manca ancora per il viaggio e a che punto è la valigia.</string>
+    <string name="widget_packing_name">Bagagli</string>
+    <string name="widget_packing_description">Quanto sono piene le borse, il loro peso e cosa manca ancora.</string>
+    <string name="widget_atlas_name">Mappa del mondo</string>
+    <string name="widget_atlas_description">I paesi in cui sei stato, illuminati sulla mappa.</string>
+    <string name="widget_collab_name">Gruppo di viaggio</string>
+    <string name="widget_collab_description">Chi viene, gli ultimi messaggi e il sondaggio aperto.</string>
+    <string name="widget_intent_title">Scegli viaggio</string>
+    <string name="widget_intent_description">Il viaggio mostrato da questo widget.</string>
+    <string name="widget_intent_trip">Viaggio</string>
+    <string name="widget_intent_auto">Automatico</string>
+    <string name="widget_intent_auto_hint">Lo stesso viaggio della dashboard</string>
+    <string name="share_title">Aggiungi a TREK</string>
+    <string name="share_cancel">Annulla</string>
+    <string name="share_close">Chiudi</string>
+    <string name="share_trip">Viaggio</string>
+    <string name="share_no_trips">Apri TREK una volta e qui compariranno i tuoi viaggi.</string>
+    <string name="share_hint">TREK legge la prenotazione e la aggiunge al viaggio.</string>
+    <string name="share_later">Scegli dopo</string>
+    <string name="share_add">Aggiungi</string>
+    <string name="share_add_to">Aggiungi a %1$s</string>
+    <string name="share_added">Aggiunto</string>
+    <string name="share_reading">Lettura…</string>
+    <string name="share_too_large">Questo file è troppo grande da importare.</string>
+    <string name="share_unsupported">TREK non può importare questo contenuto.</string>
+    <string name="share_failed">Impossibile passarlo a TREK. Riprova.</string>
+    <string name="share_now">In corso</string>
+    <string name="share_past">Passato</string>
+    <string name="share_tomorrow">Domani</string>
+    <string name="share_in_days">Tra %1$d giorni</string>
+    <string name="share_kind_pass">Pass di Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Pagina web</string>
+    <string name="share_kind_text">Testo</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">File</string>
+    <string name="widget_empty">Apri TREK una volta e qui compariranno i tuoi viaggi.</string>
+    <string name="push_channel_chat">Chat del viaggio</string>
+    <string name="push_channel_trips">Novità del viaggio</string>
+    <string name="push_channel_invites">Inviti e condivisioni</string>
+    <string name="push_channel_name">Generali</string>
+    <string name="push_channel_tripday">Giorno di viaggio</string>
+    <string name="push_fallback_body">Nuova notifica</string>
+    <string name="push_channel_tripday_description">La giornata di un viaggio in corso e la prossima tappa.</string>
+</resources>

client/android/app/src/main/res/values-iw/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">טיול</string>
+    <string name="widget_trip_description">סופר את הימים עד הטיול הבא, ובמהלכו מציג את היום ואת מה שבא אחריו.</string>
+    <string name="widget_today_name">היום</string>
+    <string name="widget_today_description">תוכנית היום כציר זמן, עם מזג האוויר והעצירה הבאה.</string>
+    <string name="widget_bookings_name">הזמנות</string>
+    <string name="widget_bookings_description">הטיסות, הרכבות, המלונות והשולחנות הבאים שלך, ומתי הם.</string>
+    <string name="widget_todos_name">משימות</string>
+    <string name="widget_todos_description">מה עוד פתוח לטיול וכמה התקדמה האריזה.</string>
+    <string name="widget_packing_name">אריזה</string>
+    <string name="widget_packing_description">כמה מלאים התיקים, המשקל שלהם ומה עוד חסר.</string>
+    <string name="widget_atlas_name">מפת העולם</string>
+    <string name="widget_atlas_description">המדינות שביקרת בהן, זוהרות על המפה.</string>
+    <string name="widget_collab_name">קבוצת הטיול</string>
+    <string name="widget_collab_description">מי מצטרף, ההודעות האחרונות והסקר הפתוח.</string>
+    <string name="widget_intent_title">בחירת טיול</string>
+    <string name="widget_intent_description">הטיול שהווידג׳ט הזה מציג.</string>
+    <string name="widget_intent_trip">טיול</string>
+    <string name="widget_intent_auto">אוטומטי</string>
+    <string name="widget_intent_auto_hint">אותו טיול כמו בלוח הבקרה</string>
+    <string name="share_title">הוספה ל-TREK</string>
+    <string name="share_cancel">ביטול</string>
+    <string name="share_close">סגירה</string>
+    <string name="share_trip">טיול</string>
+    <string name="share_no_trips">פתחו את TREK פעם אחת והטיולים שלכם יופיעו כאן.</string>
+    <string name="share_hint">TREK קורא את ההזמנה ומוסיף אותה לטיול.</string>
+    <string name="share_later">לבחור אחר כך</string>
+    <string name="share_add">הוספה</string>
+    <string name="share_add_to">הוספה אל %1$s</string>
+    <string name="share_added">נוסף</string>
+    <string name="share_reading">קורא…</string>
+    <string name="share_too_large">הקובץ גדול מדי לייבוא.</string>
+    <string name="share_unsupported">TREK לא יכול לייבא את זה.</string>
+    <string name="share_failed">לא ניתן היה להעביר את זה ל-TREK. אנא נסו שוב.</string>
+    <string name="share_now">עכשיו</string>
+    <string name="share_past">עבר</string>
+    <string name="share_tomorrow">מחר</string>
+    <string name="share_in_days">בעוד %1$d ימים</string>
+    <string name="share_kind_pass">כרטיס Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">דוא״ל</string>
+    <string name="share_kind_page">דף אינטרנט</string>
+    <string name="share_kind_text">טקסט</string>
+    <string name="share_kind_image">תמונה</string>
+    <string name="share_kind_file">קובץ</string>
+    <string name="widget_empty">פתחו את TREK פעם אחת והטיולים שלכם יופיעו כאן.</string>
+    <string name="push_channel_chat">צ׳אט הטיול</string>
+    <string name="push_channel_trips">עדכוני הטיול</string>
+    <string name="push_channel_invites">הזמנות ושיתופים</string>
+    <string name="push_channel_name">כללי</string>
+    <string name="push_channel_tripday">יום טיול</string>
+    <string name="push_fallback_body">התראה חדשה</string>
+    <string name="push_channel_tripday_description">היום של טיול פעיל והעצירה הבאה שלו.</string>
+</resources>

client/android/app/src/main/res/values-ja/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">旅行</string>
+    <string name="widget_trip_description">次の旅行までをカウントダウンし、旅行中はその日の予定と次の行き先を表示します。</string>
+    <string name="widget_today_name">今日</string>
+    <string name="widget_today_description">今日の予定をタイムラインで、天気と次の予定とともに表示します。</string>
+    <string name="widget_bookings_name">予約</string>
+    <string name="widget_bookings_description">次のフライト、列車、ホテル、レストランとその日時。</string>
+    <string name="widget_todos_name">やること</string>
+    <string name="widget_todos_description">旅行のために残っていることと、荷造りの進み具合。</string>
+    <string name="widget_packing_name">持ち物</string>
+    <string name="widget_packing_description">バッグの詰め具合と重さ、まだ足りないもの。</string>
+    <string name="widget_atlas_name">世界地図</string>
+    <string name="widget_atlas_description">訪れた国が地図上で光ります。</string>
+    <string name="widget_collab_name">旅行グループ</string>
+    <string name="widget_collab_description">一緒に行くメンバー、最新のメッセージ、受付中の投票。</string>
+    <string name="widget_intent_title">旅行を選択</string>
+    <string name="widget_intent_description">このウィジェットに表示する旅行。</string>
+    <string name="widget_intent_trip">旅行</string>
+    <string name="widget_intent_auto">自動</string>
+    <string name="widget_intent_auto_hint">ダッシュボードと同じ旅行</string>
+    <string name="share_title">TREKに追加</string>
+    <string name="share_cancel">キャンセル</string>
+    <string name="share_close">閉じる</string>
+    <string name="share_trip">旅行</string>
+    <string name="share_no_trips">一度TREKを開くと、ここに旅行が表示されます。</string>
+    <string name="share_hint">TREKが予約を読み取り、旅行に追加します。</string>
+    <string name="share_later">あとで選ぶ</string>
+    <string name="share_add">追加</string>
+    <string name="share_add_to">%1$sに追加</string>
+    <string name="share_added">追加しました</string>
+    <string name="share_reading">読み込み中…</string>
+    <string name="share_too_large">このファイルは大きすぎて読み込めません。</string>
+    <string name="share_unsupported">TREKではこれを読み込めません。</string>
+    <string name="share_failed">TREKに渡せませんでした。もう一度お試しください。</string>
+    <string name="share_now">旅行中</string>
+    <string name="share_past">終了</string>
+    <string name="share_tomorrow">明日</string>
+    <string name="share_in_days">%1$d日後</string>
+    <string name="share_kind_pass">Walletパス</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">メール</string>
+    <string name="share_kind_page">Webページ</string>
+    <string name="share_kind_text">テキスト</string>
+    <string name="share_kind_image">写真</string>
+    <string name="share_kind_file">ファイル</string>
+    <string name="widget_empty">一度TREKを開くと、ここに旅行が表示されます。</string>
+    <string name="push_channel_chat">旅行チャット</string>
+    <string name="push_channel_trips">旅行の更新</string>
+    <string name="push_channel_invites">招待と共有</string>
+    <string name="push_channel_name">一般</string>
+    <string name="push_channel_tripday">旅行日</string>
+    <string name="push_fallback_body">新しい通知</string>
+    <string name="push_channel_tripday_description">進行中の旅行の一日と次の立ち寄り先。</string>
+</resources>

client/android/app/src/main/res/values-ko/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">여행</string>
+    <string name="widget_trip_description">다음 여행까지 남은 날을 세고, 여행 중에는 오늘과 다음 일정을 보여 줍니다.</string>
+    <string name="widget_today_name">오늘</string>
+    <string name="widget_today_description">오늘 일정을 타임라인으로, 날씨와 다음 장소와 함께 보여 줍니다.</string>
+    <string name="widget_bookings_name">예약</string>
+    <string name="widget_bookings_description">다가오는 항공편, 기차, 호텔, 식당과 그 시간.</string>
+    <string name="widget_todos_name">할 일</string>
+    <string name="widget_todos_description">여행을 위해 남은 일과 짐 싸기 진행 상황.</string>
+    <string name="widget_packing_name">짐 싸기</string>
+    <string name="widget_packing_description">가방이 얼마나 찼는지, 무게, 아직 빠진 것.</string>
+    <string name="widget_atlas_name">세계 지도</string>
+    <string name="widget_atlas_description">다녀온 나라가 지도 위에서 빛납니다.</string>
+    <string name="widget_collab_name">여행 그룹</string>
+    <string name="widget_collab_description">함께 가는 사람, 최근 메시지, 진행 중인 투표.</string>
+    <string name="widget_intent_title">여행 선택</string>
+    <string name="widget_intent_description">이 위젯에 표시할 여행.</string>
+    <string name="widget_intent_trip">여행</string>
+    <string name="widget_intent_auto">자동</string>
+    <string name="widget_intent_auto_hint">대시보드와 같은 여행</string>
+    <string name="share_title">TREK에 추가</string>
+    <string name="share_cancel">취소</string>
+    <string name="share_close">닫기</string>
+    <string name="share_trip">여행</string>
+    <string name="share_no_trips">TREK을 한 번 열면 여기에 여행이 표시됩니다.</string>
+    <string name="share_hint">TREK이 예약을 읽고 여행에 추가합니다.</string>
+    <string name="share_later">나중에 선택</string>
+    <string name="share_add">추가</string>
+    <string name="share_add_to">%1$s에 추가</string>
+    <string name="share_added">추가됨</string>
+    <string name="share_reading">읽는 중…</string>
+    <string name="share_too_large">이 파일은 가져오기에는 너무 큽니다.</string>
+    <string name="share_unsupported">TREK에서 가져올 수 없는 항목입니다.</string>
+    <string name="share_failed">TREK에 전달하지 못했습니다. 다시 시도하세요.</string>
+    <string name="share_now">진행 중</string>
+    <string name="share_past">지난 여행</string>
+    <string name="share_tomorrow">내일</string>
+    <string name="share_in_days">%1$d일 후</string>
+    <string name="share_kind_pass">Wallet 패스</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">이메일</string>
+    <string name="share_kind_page">웹 페이지</string>
+    <string name="share_kind_text">텍스트</string>
+    <string name="share_kind_image">사진</string>
+    <string name="share_kind_file">파일</string>
+    <string name="widget_empty">TREK을 한 번 열면 여기에 여행이 표시됩니다.</string>
+    <string name="push_channel_chat">여행 채팅</string>
+    <string name="push_channel_trips">여행 소식</string>
+    <string name="push_channel_invites">초대 및 공유</string>
+    <string name="push_channel_name">일반</string>
+    <string name="push_channel_tripday">여행일</string>
+    <string name="push_fallback_body">새 알림</string>
+    <string name="push_channel_tripday_description">진행 중인 여행의 하루와 다음 장소.</string>
+</resources>

client/android/app/src/main/res/values-nl/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Reis</string>
+    <string name="widget_trip_description">Telt af naar je volgende reis en toont onderweg de dag en wat er hierna komt.</string>
+    <string name="widget_today_name">Vandaag</string>
+    <string name="widget_today_description">Het dagplan als tijdlijn, met het weer en de volgende stop.</string>
+    <string name="widget_bookings_name">Boekingen</string>
+    <string name="widget_bookings_description">Je volgende vluchten, treinen, hotels en tafels, en wanneer ze zijn.</string>
+    <string name="widget_todos_name">Taken</string>
+    <string name="widget_todos_description">Wat er nog openstaat voor de reis en hoe ver het inpakken is.</string>
+    <string name="widget_packing_name">Bagage</string>
+    <string name="widget_packing_description">Hoe vol de tassen zijn, hun gewicht en wat er nog mist.</string>
+    <string name="widget_atlas_name">Wereldkaart</string>
+    <string name="widget_atlas_description">De landen waar je bent geweest, oplichtend op de kaart.</string>
+    <string name="widget_collab_name">Reisgezelschap</string>
+    <string name="widget_collab_description">Wie er meegaat, de nieuwste berichten en de open peiling.</string>
+    <string name="widget_intent_title">Reis kiezen</string>
+    <string name="widget_intent_description">De reis die deze widget toont.</string>
+    <string name="widget_intent_trip">Reis</string>
+    <string name="widget_intent_auto">Automatisch</string>
+    <string name="widget_intent_auto_hint">Dezelfde reis als het dashboard</string>
+    <string name="share_title">Toevoegen aan TREK</string>
+    <string name="share_cancel">Annuleer</string>
+    <string name="share_close">Sluit</string>
+    <string name="share_trip">Reis</string>
+    <string name="share_no_trips">Open TREK één keer, dan verschijnen je reizen hier.</string>
+    <string name="share_hint">TREK leest de boeking en zet hem in de reis.</string>
+    <string name="share_later">Later kiezen</string>
+    <string name="share_add">Toevoegen</string>
+    <string name="share_add_to">Toevoegen aan %1$s</string>
+    <string name="share_added">Toegevoegd</string>
+    <string name="share_reading">Lezen…</string>
+    <string name="share_too_large">Dit bestand is te groot om te importeren.</string>
+    <string name="share_unsupported">Dit kan TREK niet importeren.</string>
+    <string name="share_failed">Dit kon niet aan TREK worden doorgegeven. Probeer het opnieuw.</string>
+    <string name="share_now">Nu</string>
+    <string name="share_past">Voorbij</string>
+    <string name="share_tomorrow">Morgen</string>
+    <string name="share_in_days">Over %1$d dagen</string>
+    <string name="share_kind_pass">Wallet-pas</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Webpagina</string>
+    <string name="share_kind_text">Tekst</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Bestand</string>
+    <string name="widget_empty">Open TREK één keer, dan verschijnen je reizen hier.</string>
+    <string name="push_channel_chat">Reischat</string>
+    <string name="push_channel_trips">Reisupdates</string>
+    <string name="push_channel_invites">Uitnodigingen en delen</string>
+    <string name="push_channel_name">Algemeen</string>
+    <string name="push_channel_tripday">Reisdag</string>
+    <string name="push_fallback_body">Nieuwe melding</string>
+    <string name="push_channel_tripday_description">De dag van een lopende reis en de volgende stop.</string>
+</resources>

client/android/app/src/main/res/values-pl/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Podróż</string>
+    <string name="widget_trip_description">Odlicza dni do następnej podróży, a w trakcie pokazuje dzień i to, co dalej.</string>
+    <string name="widget_today_name">Dziś</string>
+    <string name="widget_today_description">Plan dnia jako oś czasu, z pogodą i kolejnym przystankiem.</string>
+    <string name="widget_bookings_name">Rezerwacje</string>
+    <string name="widget_bookings_description">Twoje najbliższe loty, pociągi, hotele i stoliki oraz ich terminy.</string>
+    <string name="widget_todos_name">Zadania</string>
+    <string name="widget_todos_description">Co jeszcze zostało do zrobienia przed podróżą i jak idzie pakowanie.</string>
+    <string name="widget_packing_name">Pakowanie</string>
+    <string name="widget_packing_description">Jak pełne są torby, ich waga i czego jeszcze brakuje.</string>
+    <string name="widget_atlas_name">Mapa świata</string>
+    <string name="widget_atlas_description">Kraje, w których byłeś, świecące na mapie.</string>
+    <string name="widget_collab_name">Grupa podróży</string>
+    <string name="widget_collab_description">Kto jedzie, najnowsze wiadomości i otwarta ankieta.</string>
+    <string name="widget_intent_title">Wybierz podróż</string>
+    <string name="widget_intent_description">Podróż, którą pokazuje ten widżet.</string>
+    <string name="widget_intent_trip">Podróż</string>
+    <string name="widget_intent_auto">Automatycznie</string>
+    <string name="widget_intent_auto_hint">Ta sama podróż co na pulpicie</string>
+    <string name="share_title">Dodaj do TREK</string>
+    <string name="share_cancel">Anuluj</string>
+    <string name="share_close">Zamknij</string>
+    <string name="share_trip">Podróż</string>
+    <string name="share_no_trips">Otwórz TREK raz, a Twoje podróże pojawią się tutaj.</string>
+    <string name="share_hint">TREK odczyta rezerwację i doda ją do podróży.</string>
+    <string name="share_later">Wybierz później</string>
+    <string name="share_add">Dodaj</string>
+    <string name="share_add_to">Dodaj do %1$s</string>
+    <string name="share_added">Dodano</string>
+    <string name="share_reading">Odczytywanie…</string>
+    <string name="share_too_large">Ten plik jest za duży do zaimportowania.</string>
+    <string name="share_unsupported">TREK nie może tego zaimportować.</string>
+    <string name="share_failed">Nie udało się przekazać tego do TREK. Spróbuj ponownie.</string>
+    <string name="share_now">Teraz</string>
+    <string name="share_past">Minęła</string>
+    <string name="share_tomorrow">Jutro</string>
+    <string name="share_in_days">Za %1$d dni</string>
+    <string name="share_kind_pass">Karta Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Strona</string>
+    <string name="share_kind_text">Tekst</string>
+    <string name="share_kind_image">Zdjęcie</string>
+    <string name="share_kind_file">Plik</string>
+    <string name="widget_empty">Otwórz TREK raz, a Twoje podróże pojawią się tutaj.</string>
+    <string name="push_channel_chat">Czat podróży</string>
+    <string name="push_channel_trips">Nowości o podróży</string>
+    <string name="push_channel_invites">Zaproszenia i udostępnienia</string>
+    <string name="push_channel_name">Ogólne</string>
+    <string name="push_channel_tripday">Dzień podróży</string>
+    <string name="push_fallback_body">Nowe powiadomienie</string>
+    <string name="push_channel_tripday_description">Dzień trwającej podróży i jej następny przystanek.</string>
+</resources>

client/android/app/src/main/res/values-pt-rBR/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Viagem</string>
+    <string name="widget_trip_description">Conta os dias até a próxima viagem e, durante ela, mostra o dia e o que vem a seguir.</string>
+    <string name="widget_today_name">Hoje</string>
+    <string name="widget_today_description">O plano do dia como linha do tempo, com o clima e a próxima parada.</string>
+    <string name="widget_bookings_name">Reservas</string>
+    <string name="widget_bookings_description">Seus próximos voos, trens, hotéis e mesas, e quando acontecem.</string>
+    <string name="widget_todos_name">Tarefas</string>
+    <string name="widget_todos_description">O que ainda falta para a viagem e quanto da mala já está pronto.</string>
+    <string name="widget_packing_name">Bagagem</string>
+    <string name="widget_packing_description">Quão cheias estão as malas, o peso e o que ainda falta.</string>
+    <string name="widget_atlas_name">Mapa-múndi</string>
+    <string name="widget_atlas_description">Os países em que você esteve, brilhando no mapa.</string>
+    <string name="widget_collab_name">Grupo de viagem</string>
+    <string name="widget_collab_description">Quem vai junto, as mensagens recentes e a votação aberta.</string>
+    <string name="widget_intent_title">Escolher viagem</string>
+    <string name="widget_intent_description">A viagem que este widget mostra.</string>
+    <string name="widget_intent_trip">Viagem</string>
+    <string name="widget_intent_auto">Automático</string>
+    <string name="widget_intent_auto_hint">A mesma viagem do painel</string>
+    <string name="share_title">Adicionar ao TREK</string>
+    <string name="share_cancel">Cancelar</string>
+    <string name="share_close">Fechar</string>
+    <string name="share_trip">Viagem</string>
+    <string name="share_no_trips">Abra o TREK uma vez e suas viagens aparecerão aqui.</string>
+    <string name="share_hint">O TREK lê a reserva e a adiciona à viagem.</string>
+    <string name="share_later">Escolher depois</string>
+    <string name="share_add">Adicionar</string>
+    <string name="share_add_to">Adicionar a %1$s</string>
+    <string name="share_added">Adicionado</string>
+    <string name="share_reading">Lendo…</string>
+    <string name="share_too_large">Este arquivo é grande demais para importar.</string>
+    <string name="share_unsupported">O TREK não consegue importar isto.</string>
+    <string name="share_failed">Não foi possível passar isto ao TREK. Tente novamente.</string>
+    <string name="share_now">Agora</string>
+    <string name="share_past">Passada</string>
+    <string name="share_tomorrow">Amanhã</string>
+    <string name="share_in_days">Em %1$d dias</string>
+    <string name="share_kind_pass">Passe do Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Página web</string>
+    <string name="share_kind_text">Texto</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Arquivo</string>
+    <string name="widget_empty">Abra o TREK uma vez e suas viagens aparecerão aqui.</string>
+    <string name="push_channel_chat">Chat da viagem</string>
+    <string name="push_channel_trips">Novidades da viagem</string>
+    <string name="push_channel_invites">Convites e compartilhamentos</string>
+    <string name="push_channel_name">Geral</string>
+    <string name="push_channel_tripday">Dia de viagem</string>
+    <string name="push_fallback_body">Nova notificação</string>
+    <string name="push_channel_tripday_description">O dia de uma viagem em andamento e sua próxima parada.</string>
+</resources>

client/android/app/src/main/res/values-ru/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Поездка</string>
+    <string name="widget_trip_description">Отсчитывает дни до следующей поездки, а в пути показывает день и что дальше.</string>
+    <string name="widget_today_name">Сегодня</string>
+    <string name="widget_today_description">План дня в виде ленты времени, с погодой и следующей остановкой.</string>
+    <string name="widget_bookings_name">Бронирования</string>
+    <string name="widget_bookings_description">Ближайшие рейсы, поезда, отели и столики и когда они.</string>
+    <string name="widget_todos_name">Задачи</string>
+    <string name="widget_todos_description">Что ещё осталось сделать к поездке и как идут сборы.</string>
+    <string name="widget_packing_name">Сборы</string>
+    <string name="widget_packing_description">Насколько заполнены сумки, их вес и чего ещё не хватает.</string>
+    <string name="widget_atlas_name">Карта мира</string>
+    <string name="widget_atlas_description">Страны, где вы были, светятся на карте.</string>
+    <string name="widget_collab_name">Группа поездки</string>
+    <string name="widget_collab_description">Кто едет, последние сообщения и открытый опрос.</string>
+    <string name="widget_intent_title">Выбрать поездку</string>
+    <string name="widget_intent_description">Поездка, которую показывает этот виджет.</string>
+    <string name="widget_intent_trip">Поездка</string>
+    <string name="widget_intent_auto">Автоматически</string>
+    <string name="widget_intent_auto_hint">Та же поездка, что и на главной</string>
+    <string name="share_title">Добавить в TREK</string>
+    <string name="share_cancel">Отменить</string>
+    <string name="share_close">Закрыть</string>
+    <string name="share_trip">Поездка</string>
+    <string name="share_no_trips">Откройте TREK один раз, и ваши поездки появятся здесь.</string>
+    <string name="share_hint">TREK прочитает бронь и добавит её в поездку.</string>
+    <string name="share_later">Выбрать позже</string>
+    <string name="share_add">Добавить</string>
+    <string name="share_add_to">Добавить в «%1$s»</string>
+    <string name="share_added">Добавлено</string>
+    <string name="share_reading">Чтение…</string>
+    <string name="share_too_large">Файл слишком большой для импорта.</string>
+    <string name="share_unsupported">TREK не может это импортировать.</string>
+    <string name="share_failed">Не удалось передать это в TREK. Повторите попытку.</string>
+    <string name="share_now">Сейчас</string>
+    <string name="share_past">Прошла</string>
+    <string name="share_tomorrow">Завтра</string>
+    <string name="share_in_days">Через %1$d дн.</string>
+    <string name="share_kind_pass">Карта Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Письмо</string>
+    <string name="share_kind_page">Веб-страница</string>
+    <string name="share_kind_text">Текст</string>
+    <string name="share_kind_image">Фото</string>
+    <string name="share_kind_file">Файл</string>
+    <string name="widget_empty">Откройте TREK один раз, и ваши поездки появятся здесь.</string>
+    <string name="push_channel_chat">Чат поездки</string>
+    <string name="push_channel_trips">Новости поездки</string>
+    <string name="push_channel_invites">Приглашения и доступ</string>
+    <string name="push_channel_name">Общие</string>
+    <string name="push_channel_tripday">День поездки</string>
+    <string name="push_fallback_body">Новое уведомление</string>
+    <string name="push_channel_tripday_description">День текущей поездки и следующая остановка.</string>
+</resources>

client/android/app/src/main/res/values-sk/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Cesta</string>
+    <string name="widget_trip_description">Odpočítava dni do ďalšej cesty a počas nej ukazuje deň a čo príde ďalej.</string>
+    <string name="widget_today_name">Dnes</string>
+    <string name="widget_today_description">Plán dňa ako časová os, s počasím a ďalšou zastávkou.</string>
+    <string name="widget_bookings_name">Rezervácie</string>
+    <string name="widget_bookings_description">Tvoje ďalšie lety, vlaky, hotely a stoly a kedy ťa čakajú.</string>
+    <string name="widget_todos_name">Úlohy</string>
+    <string name="widget_todos_description">Čo ešte zostáva na cestu a ako ďaleko je balenie.</string>
+    <string name="widget_packing_name">Balenie</string>
+    <string name="widget_packing_description">Aké plné sú tašky, ich váha a čo ešte chýba.</string>
+    <string name="widget_atlas_name">Mapa sveta</string>
+    <string name="widget_atlas_description">Krajiny, kde si bol, žiariace na mape.</string>
+    <string name="widget_collab_name">Cestovná skupina</string>
+    <string name="widget_collab_description">Kto ide s tebou, najnovšie správy a otvorené hlasovanie.</string>
+    <string name="widget_intent_title">Vybrať cestu</string>
+    <string name="widget_intent_description">Cesta, ktorú zobrazuje tento widget.</string>
+    <string name="widget_intent_trip">Cesta</string>
+    <string name="widget_intent_auto">Automaticky</string>
+    <string name="widget_intent_auto_hint">Rovnaká cesta ako na nástenke</string>
+    <string name="share_title">Pridať do TREK</string>
+    <string name="share_cancel">Zrušiť</string>
+    <string name="share_close">Zavrieť</string>
+    <string name="share_trip">Cesta</string>
+    <string name="share_no_trips">Raz otvorte TREK a vaše cesty sa zobrazia tu.</string>
+    <string name="share_hint">TREK prečíta rezerváciu a pridá ju k ceste.</string>
+    <string name="share_later">Vybrať neskôr</string>
+    <string name="share_add">Pridať</string>
+    <string name="share_add_to">Pridať do %1$s</string>
+    <string name="share_added">Pridané</string>
+    <string name="share_reading">Načítava sa…</string>
+    <string name="share_too_large">Tento súbor je na import príliš veľký.</string>
+    <string name="share_unsupported">Toto TREK nevie importovať.</string>
+    <string name="share_failed">Nepodarilo sa to odovzdať do TREK. Skúste to znova.</string>
+    <string name="share_now">Teraz</string>
+    <string name="share_past">Prebehla</string>
+    <string name="share_tomorrow">Zajtra</string>
+    <string name="share_in_days">O %1$d dní</string>
+    <string name="share_kind_pass">Karta Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-mail</string>
+    <string name="share_kind_page">Webová stránka</string>
+    <string name="share_kind_text">Text</string>
+    <string name="share_kind_image">Fotka</string>
+    <string name="share_kind_file">Súbor</string>
+    <string name="widget_empty">Raz otvorte TREK a vaše cesty sa zobrazia tu.</string>
+    <string name="push_channel_chat">Chat výletu</string>
+    <string name="push_channel_trips">Novinky z výletu</string>
+    <string name="push_channel_invites">Pozvánky a zdieľania</string>
+    <string name="push_channel_name">Všeobecné</string>
+    <string name="push_channel_tripday">Cestovný deň</string>
+    <string name="push_fallback_body">Nové upozornenie</string>
+    <string name="push_channel_tripday_description">Deň prebiehajúceho výletu a jeho ďalšia zastávka.</string>
+</resources>

client/android/app/src/main/res/values-sv/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Resa</string>
+    <string name="widget_trip_description">Räknar ner till nästa resa och visar under resan dagen och vad som kommer härnäst.</string>
+    <string name="widget_today_name">Idag</string>
+    <string name="widget_today_description">Dagens plan som tidslinje, med vädret och nästa stopp.</string>
+    <string name="widget_bookings_name">Bokningar</string>
+    <string name="widget_bookings_description">Dina nästa flyg, tåg, hotell och bord, och när de är.</string>
+    <string name="widget_todos_name">Att göra</string>
+    <string name="widget_todos_description">Vad som återstår inför resan och hur långt packningen har kommit.</string>
+    <string name="widget_packing_name">Packning</string>
+    <string name="widget_packing_description">Hur fulla väskorna är, deras vikt och vad som fortfarande saknas.</string>
+    <string name="widget_atlas_name">Världskarta</string>
+    <string name="widget_atlas_description">Länderna du har besökt, lysande på kartan.</string>
+    <string name="widget_collab_name">Resesällskap</string>
+    <string name="widget_collab_description">Vem som följer med, de senaste meddelandena och den öppna omröstningen.</string>
+    <string name="widget_intent_title">Välj resa</string>
+    <string name="widget_intent_description">Resan som den här widgeten visar.</string>
+    <string name="widget_intent_trip">Resa</string>
+    <string name="widget_intent_auto">Automatiskt</string>
+    <string name="widget_intent_auto_hint">Samma resa som på startsidan</string>
+    <string name="share_title">Lägg till i TREK</string>
+    <string name="share_cancel">Avbryt</string>
+    <string name="share_close">Stäng</string>
+    <string name="share_trip">Resa</string>
+    <string name="share_no_trips">Öppna TREK en gång så visas dina resor här.</string>
+    <string name="share_hint">TREK läser bokningen och lägger till den i resan.</string>
+    <string name="share_later">Välj senare</string>
+    <string name="share_add">Lägg till</string>
+    <string name="share_add_to">Lägg till i %1$s</string>
+    <string name="share_added">Tillagd</string>
+    <string name="share_reading">Läser…</string>
+    <string name="share_too_large">Filen är för stor för att importeras.</string>
+    <string name="share_unsupported">Det här kan TREK inte importera.</string>
+    <string name="share_failed">Det gick inte att lämna över till TREK. Försök igen.</string>
+    <string name="share_now">Nu</string>
+    <string name="share_past">Förbi</string>
+    <string name="share_tomorrow">I morgon</string>
+    <string name="share_in_days">Om %1$d dagar</string>
+    <string name="share_kind_pass">Wallet-kort</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Mejl</string>
+    <string name="share_kind_page">Webbsida</string>
+    <string name="share_kind_text">Text</string>
+    <string name="share_kind_image">Foto</string>
+    <string name="share_kind_file">Fil</string>
+    <string name="widget_empty">Öppna TREK en gång så visas dina resor här.</string>
+    <string name="push_channel_chat">Resechatt</string>
+    <string name="push_channel_trips">Nytt om resan</string>
+    <string name="push_channel_invites">Inbjudningar och delningar</string>
+    <string name="push_channel_name">Allmänt</string>
+    <string name="push_channel_tripday">Resdag</string>
+    <string name="push_fallback_body">Ny avisering</string>
+    <string name="push_channel_tripday_description">Dagen för en pågående resa och nästa stopp.</string>
+</resources>

client/android/app/src/main/res/values-th/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">ทริป</string>
+    <string name="widget_trip_description">นับถอยหลังสู่ทริปถัดไป และระหว่างทริปแสดงวันนี้และสิ่งที่จะตามมา</string>
+    <string name="widget_today_name">วันนี้</string>
+    <string name="widget_today_description">แผนของวันนี้เป็นไทม์ไลน์ พร้อมสภาพอากาศและจุดหมายถัดไป</string>
+    <string name="widget_bookings_name">การจอง</string>
+    <string name="widget_bookings_description">เที่ยวบิน รถไฟ โรงแรม และร้านอาหารถัดไปของคุณ และเวลาของแต่ละรายการ</string>
+    <string name="widget_todos_name">สิ่งที่ต้องทำ</string>
+    <string name="widget_todos_description">สิ่งที่ยังค้างอยู่สำหรับทริป และความคืบหน้าการจัดกระเป๋า</string>
+    <string name="widget_packing_name">จัดกระเป๋า</string>
+    <string name="widget_packing_description">กระเป๋าเต็มแค่ไหน น้ำหนัก และอะไรที่ยังขาด</string>
+    <string name="widget_atlas_name">แผนที่โลก</string>
+    <string name="widget_atlas_description">ประเทศที่คุณเคยไป ส่องแสงบนแผนที่</string>
+    <string name="widget_collab_name">กลุ่มเดินทาง</string>
+    <string name="widget_collab_description">ใครไปด้วย ข้อความล่าสุด และโหวตที่เปิดอยู่</string>
+    <string name="widget_intent_title">เลือกทริป</string>
+    <string name="widget_intent_description">ทริปที่วิดเจ็ตนี้แสดง</string>
+    <string name="widget_intent_trip">ทริป</string>
+    <string name="widget_intent_auto">อัตโนมัติ</string>
+    <string name="widget_intent_auto_hint">ทริปเดียวกับแดชบอร์ด</string>
+    <string name="share_title">เพิ่มลงใน TREK</string>
+    <string name="share_cancel">ยกเลิก</string>
+    <string name="share_close">ปิด</string>
+    <string name="share_trip">ทริป</string>
+    <string name="share_no_trips">เปิด TREK หนึ่งครั้ง แล้วทริปของคุณจะแสดงที่นี่</string>
+    <string name="share_hint">TREK จะอ่านการจองและเพิ่มลงในทริป</string>
+    <string name="share_later">เลือกภายหลัง</string>
+    <string name="share_add">เพิ่ม</string>
+    <string name="share_add_to">เพิ่มลงใน %1$s</string>
+    <string name="share_added">เพิ่มแล้ว</string>
+    <string name="share_reading">กำลังอ่าน…</string>
+    <string name="share_too_large">ไฟล์นี้ใหญ่เกินไปสำหรับการนำเข้า</string>
+    <string name="share_unsupported">TREK นำเข้ารายการนี้ไม่ได้</string>
+    <string name="share_failed">ส่งต่อให้ TREK ไม่สำเร็จ โปรดลองอีกครั้ง</string>
+    <string name="share_now">ตอนนี้</string>
+    <string name="share_past">ผ่านไปแล้ว</string>
+    <string name="share_tomorrow">พรุ่งนี้</string>
+    <string name="share_in_days">อีก %1$d วัน</string>
+    <string name="share_kind_pass">บัตร Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">อีเมล</string>
+    <string name="share_kind_page">หน้าเว็บ</string>
+    <string name="share_kind_text">ข้อความ</string>
+    <string name="share_kind_image">รูปภาพ</string>
+    <string name="share_kind_file">ไฟล์</string>
+    <string name="widget_empty">เปิด TREK หนึ่งครั้ง แล้วทริปของคุณจะแสดงที่นี่</string>
+    <string name="push_channel_chat">แชทการเดินทาง</string>
+    <string name="push_channel_trips">อัปเดตการเดินทาง</string>
+    <string name="push_channel_invites">คำเชิญและการแชร์</string>
+    <string name="push_channel_name">ทั่วไป</string>
+    <string name="push_channel_tripday">วันเดินทาง</string>
+    <string name="push_fallback_body">การแจ้งเตือนใหม่</string>
+    <string name="push_channel_tripday_description">วันของทริปที่กำลังดำเนินอยู่และจุดหมายถัดไป</string>
+</resources>

client/android/app/src/main/res/values-tr/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Seyahat</string>
+    <string name="widget_trip_description">Sonraki seyahate kalan günleri sayar, yolculukta günü ve sırada ne olduğunu gösterir.</string>
+    <string name="widget_today_name">Bugün</string>
+    <string name="widget_today_description">Günün planı zaman çizelgesi olarak, hava durumu ve sonraki durakla.</string>
+    <string name="widget_bookings_name">Rezervasyonlar</string>
+    <string name="widget_bookings_description">Sıradaki uçuşların, trenlerin, otellerin ve masaların, ne zaman oldukları ile.</string>
+    <string name="widget_todos_name">Yapılacaklar</string>
+    <string name="widget_todos_description">Seyahat için hâlâ açık olanlar ve bavulun ne durumda olduğu.</string>
+    <string name="widget_packing_name">Bavul</string>
+    <string name="widget_packing_description">Çantaların ne kadar dolu olduğu, ağırlıkları ve eksikler.</string>
+    <string name="widget_atlas_name">Dünya haritası</string>
+    <string name="widget_atlas_description">Bulunduğun ülkeler haritada parlıyor.</string>
+    <string name="widget_collab_name">Seyahat grubu</string>
+    <string name="widget_collab_description">Kimler geliyor, son mesajlar ve açık anket.</string>
+    <string name="widget_intent_title">Seyahat seç</string>
+    <string name="widget_intent_description">Bu widget\'ın gösterdiği seyahat.</string>
+    <string name="widget_intent_trip">Seyahat</string>
+    <string name="widget_intent_auto">Otomatik</string>
+    <string name="widget_intent_auto_hint">Paneldeki seyahatin aynısı</string>
+    <string name="share_title">TREK’e ekle</string>
+    <string name="share_cancel">Vazgeç</string>
+    <string name="share_close">Kapat</string>
+    <string name="share_trip">Seyahat</string>
+    <string name="share_no_trips">TREK’i bir kez açın, seyahatleriniz burada görünür.</string>
+    <string name="share_hint">TREK rezervasyonu okur ve seyahate ekler.</string>
+    <string name="share_later">Sonra seç</string>
+    <string name="share_add">Ekle</string>
+    <string name="share_add_to">%1$s seyahatine ekle</string>
+    <string name="share_added">Eklendi</string>
+    <string name="share_reading">Okunuyor…</string>
+    <string name="share_too_large">Bu dosya içe aktarmak için çok büyük.</string>
+    <string name="share_unsupported">TREK bunu içe aktaramaz.</string>
+    <string name="share_failed">Bu TREK’e aktarılamadı. Lütfen tekrar deneyin.</string>
+    <string name="share_now">Şimdi</string>
+    <string name="share_past">Geçti</string>
+    <string name="share_tomorrow">Yarın</string>
+    <string name="share_in_days">%1$d gün sonra</string>
+    <string name="share_kind_pass">Wallet kartı</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">E-posta</string>
+    <string name="share_kind_page">Web sayfası</string>
+    <string name="share_kind_text">Metin</string>
+    <string name="share_kind_image">Fotoğraf</string>
+    <string name="share_kind_file">Dosya</string>
+    <string name="widget_empty">TREK’i bir kez açın, seyahatleriniz burada görünür.</string>
+    <string name="push_channel_chat">Seyahat sohbeti</string>
+    <string name="push_channel_trips">Seyahat güncellemeleri</string>
+    <string name="push_channel_invites">Davetler ve paylaşımlar</string>
+    <string name="push_channel_name">Genel</string>
+    <string name="push_channel_tripday">Seyahat günü</string>
+    <string name="push_fallback_body">Yeni bildirim</string>
+    <string name="push_channel_tripday_description">Süren bir seyahatin günü ve sonraki durağı.</string>
+</resources>

client/android/app/src/main/res/values-uk/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Подорож</string>
+    <string name="widget_trip_description">Відлічує дні до наступної подорожі, а в дорозі показує день і що далі.</string>
+    <string name="widget_today_name">Сьогодні</string>
+    <string name="widget_today_description">План дня у вигляді стрічки часу, з погодою і наступною зупинкою.</string>
+    <string name="widget_bookings_name">Бронювання</string>
+    <string name="widget_bookings_description">Найближчі рейси, поїзди, готелі й столики та коли вони.</string>
+    <string name="widget_todos_name">Завдання</string>
+    <string name="widget_todos_description">Що ще лишилося зробити до подорожі і як просувається пакування.</string>
+    <string name="widget_packing_name">Пакування</string>
+    <string name="widget_packing_description">Наскільки заповнені сумки, їхня вага і чого ще бракує.</string>
+    <string name="widget_atlas_name">Мапа світу</string>
+    <string name="widget_atlas_description">Країни, де ви були, світяться на мапі.</string>
+    <string name="widget_collab_name">Група подорожі</string>
+    <string name="widget_collab_description">Хто їде, останні повідомлення і відкрите опитування.</string>
+    <string name="widget_intent_title">Вибрати подорож</string>
+    <string name="widget_intent_description">Подорож, яку показує цей віджет.</string>
+    <string name="widget_intent_trip">Подорож</string>
+    <string name="widget_intent_auto">Автоматично</string>
+    <string name="widget_intent_auto_hint">Та сама подорож, що й на панелі</string>
+    <string name="share_title">Додати до TREK</string>
+    <string name="share_cancel">Скасувати</string>
+    <string name="share_close">Закрити</string>
+    <string name="share_trip">Подорож</string>
+    <string name="share_no_trips">Відкрийте TREK один раз, і ваші подорожі з’являться тут.</string>
+    <string name="share_hint">TREK прочитає бронювання й додасть його до подорожі.</string>
+    <string name="share_later">Вибрати пізніше</string>
+    <string name="share_add">Додати</string>
+    <string name="share_add_to">Додати до «%1$s»</string>
+    <string name="share_added">Додано</string>
+    <string name="share_reading">Читання…</string>
+    <string name="share_too_large">Файл завеликий для імпорту.</string>
+    <string name="share_unsupported">TREK не може це імпортувати.</string>
+    <string name="share_failed">Не вдалося передати це до TREK. Повторіть спробу.</string>
+    <string name="share_now">Зараз</string>
+    <string name="share_past">Минула</string>
+    <string name="share_tomorrow">Завтра</string>
+    <string name="share_in_days">Через %1$d дн.</string>
+    <string name="share_kind_pass">Картка Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Лист</string>
+    <string name="share_kind_page">Вебсторінка</string>
+    <string name="share_kind_text">Текст</string>
+    <string name="share_kind_image">Фото</string>
+    <string name="share_kind_file">Файл</string>
+    <string name="widget_empty">Відкрийте TREK один раз, і ваші подорожі з’являться тут.</string>
+    <string name="push_channel_chat">Чат подорожі</string>
+    <string name="push_channel_trips">Новини подорожі</string>
+    <string name="push_channel_invites">Запрошення та доступ</string>
+    <string name="push_channel_name">Загальні</string>
+    <string name="push_channel_tripday">День подорожі</string>
+    <string name="push_fallback_body">Нове сповіщення</string>
+    <string name="push_channel_tripday_description">День поточної подорожі та наступна зупинка.</string>
+</resources>

client/android/app/src/main/res/values-vi/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Chuyến đi</string>
+    <string name="widget_trip_description">Đếm ngược đến chuyến đi tiếp theo, trong chuyến đi thì hiện ngày và điểm tiếp theo.</string>
+    <string name="widget_today_name">Hôm nay</string>
+    <string name="widget_today_description">Kế hoạch hôm nay dạng dòng thời gian, kèm thời tiết và điểm dừng tiếp theo.</string>
+    <string name="widget_bookings_name">Đặt chỗ</string>
+    <string name="widget_bookings_description">Các chuyến bay, tàu, khách sạn và bàn sắp tới của bạn, cùng thời gian.</string>
+    <string name="widget_todos_name">Việc cần làm</string>
+    <string name="widget_todos_description">Những gì còn lại cho chuyến đi và việc soạn hành lý đã tới đâu.</string>
+    <string name="widget_packing_name">Hành lý</string>
+    <string name="widget_packing_description">Túi đã đầy đến đâu, cân nặng và những gì còn thiếu.</string>
+    <string name="widget_atlas_name">Bản đồ thế giới</string>
+    <string name="widget_atlas_description">Những quốc gia bạn đã đến, sáng lên trên bản đồ.</string>
+    <string name="widget_collab_name">Nhóm du lịch</string>
+    <string name="widget_collab_description">Ai đi cùng, tin nhắn mới nhất và cuộc bình chọn đang mở.</string>
+    <string name="widget_intent_title">Chọn chuyến đi</string>
+    <string name="widget_intent_description">Chuyến đi mà tiện ích này hiển thị.</string>
+    <string name="widget_intent_trip">Chuyến đi</string>
+    <string name="widget_intent_auto">Tự động</string>
+    <string name="widget_intent_auto_hint">Cùng chuyến đi với bảng điều khiển</string>
+    <string name="share_title">Thêm vào TREK</string>
+    <string name="share_cancel">Hủy</string>
+    <string name="share_close">Đóng</string>
+    <string name="share_trip">Chuyến đi</string>
+    <string name="share_no_trips">Mở TREK một lần, các chuyến đi của bạn sẽ hiện ở đây.</string>
+    <string name="share_hint">TREK đọc đặt chỗ và thêm vào chuyến đi.</string>
+    <string name="share_later">Chọn sau</string>
+    <string name="share_add">Thêm</string>
+    <string name="share_add_to">Thêm vào %1$s</string>
+    <string name="share_added">Đã thêm</string>
+    <string name="share_reading">Đang đọc…</string>
+    <string name="share_too_large">Tệp này quá lớn để nhập.</string>
+    <string name="share_unsupported">TREK không thể nhập nội dung này.</string>
+    <string name="share_failed">Không thể chuyển sang TREK. Vui lòng thử lại.</string>
+    <string name="share_now">Đang diễn ra</string>
+    <string name="share_past">Đã qua</string>
+    <string name="share_tomorrow">Ngày mai</string>
+    <string name="share_in_days">Sau %1$d ngày</string>
+    <string name="share_kind_pass">Thẻ Wallet</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Email</string>
+    <string name="share_kind_page">Trang web</string>
+    <string name="share_kind_text">Văn bản</string>
+    <string name="share_kind_image">Ảnh</string>
+    <string name="share_kind_file">Tệp</string>
+    <string name="widget_empty">Mở TREK một lần, các chuyến đi của bạn sẽ hiện ở đây.</string>
+    <string name="push_channel_chat">Trò chuyện chuyến đi</string>
+    <string name="push_channel_trips">Cập nhật chuyến đi</string>
+    <string name="push_channel_invites">Lời mời và chia sẻ</string>
+    <string name="push_channel_name">Chung</string>
+    <string name="push_channel_tripday">Ngày đi</string>
+    <string name="push_fallback_body">Thông báo mới</string>
+    <string name="push_channel_tripday_description">Ngày của chuyến đi đang diễn ra và điểm dừng tiếp theo.</string>
+</resources>

client/android/app/src/main/res/values/colors.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- A stop without a category colour in the travel-day progress bar. -->
+    <color name="tripday_segment">#4A7DDB</color>
+    <!-- The tint of TREK's notifications: the app's ink, readable on light and dark shades. -->
+    <color name="notification_accent">#4A7DDB</color>
+</resources>

client/android/app/src/main/res/values/strings.xml

@@ -1,10 +1,8 @@
 <?xml version='1.0' encoding='utf-8'?>
 <resources>
-    <string name="app_name">TREK</string>
-    <string name="title_activity_main">TREK</string>
-    <string name="package_name">com.liketrek.trek</string>
-    <string name="custom_url_scheme">com.liketrek.trek</string>
-    <string name="push_channel_name">Notifications</string>
-    <string name="push_fallback_title">TREK</string>
-    <string name="push_fallback_body">New notification</string>
+    <string name="app_name" translatable="false">TREK</string>
+    <string name="title_activity_main" translatable="false">TREK</string>
+    <string name="package_name" translatable="false">com.liketrek.trek</string>
+    <string name="custom_url_scheme" translatable="false">com.liketrek.trek</string>
+    <string name="push_fallback_title" translatable="false">TREK</string>
 </resources>

client/android/app/src/main/res/values/strings_native.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generated by client/scripts/generate-android-strings.mjs from the iOS widget and share
+     sheet strings and scripts/android-strings.json. Edit those and run it again. -->
+<resources>
+    <string name="widget_trip_name">Trip</string>
+    <string name="widget_trip_description">Counts down to your next trip, then shows the day and what comes next.</string>
+    <string name="widget_today_name">Today</string>
+    <string name="widget_today_description">Today\'s plan as a timeline, with the weather and what is next.</string>
+    <string name="widget_bookings_name">Bookings</string>
+    <string name="widget_bookings_description">Your next flights, trains, hotels and tables, and when they are due.</string>
+    <string name="widget_todos_name">To-dos</string>
+    <string name="widget_todos_description">What is still open for the trip, and how far the packing has come.</string>
+    <string name="widget_packing_name">Packing</string>
+    <string name="widget_packing_description">How full the bags are, their weight, and what is still missing.</string>
+    <string name="widget_atlas_name">World map</string>
+    <string name="widget_atlas_description">The countries you have been to, glowing on the map.</string>
+    <string name="widget_collab_name">Travel group</string>
+    <string name="widget_collab_description">Who comes along, the latest messages and the open poll.</string>
+    <string name="widget_intent_title">Choose trip</string>
+    <string name="widget_intent_description">The trip this widget shows.</string>
+    <string name="widget_intent_trip">Trip</string>
+    <string name="widget_intent_auto">Automatic</string>
+    <string name="widget_intent_auto_hint">Same trip as the dashboard</string>
+    <string name="share_title">Add to TREK</string>
+    <string name="share_cancel">Cancel</string>
+    <string name="share_close">Close</string>
+    <string name="share_trip">Trip</string>
+    <string name="share_no_trips">Open TREK once and your trips show up here.</string>
+    <string name="share_hint">TREK reads the booking and adds it to the trip.</string>
+    <string name="share_later">Choose later</string>
+    <string name="share_add">Add</string>
+    <string name="share_add_to">Add to %1$s</string>
+    <string name="share_added">Added</string>
+    <string name="share_reading">Reading…</string>
+    <string name="share_too_large">This file is too large to import.</string>
+    <string name="share_unsupported">TREK cannot import this.</string>
+    <string name="share_failed">This could not be handed to TREK. Please try again.</string>
+    <string name="share_now">Now</string>
+    <string name="share_past">Past</string>
+    <string name="share_tomorrow">Tomorrow</string>
+    <string name="share_in_days">In %1$d days</string>
+    <string name="share_kind_pass">Wallet pass</string>
+    <string name="share_kind_pdf">PDF</string>
+    <string name="share_kind_mail">Email</string>
+    <string name="share_kind_page">Web page</string>
+    <string name="share_kind_text">Text</string>
+    <string name="share_kind_image">Photo</string>
+    <string name="share_kind_file">File</string>
+    <string name="widget_empty">Open TREK once and your trips show up here.</string>
+    <string name="push_channel_chat">Trip chat</string>
+    <string name="push_channel_trips">Trip updates</string>
+    <string name="push_channel_invites">Invitations and shares</string>
+    <string name="push_channel_name">General</string>
+    <string name="push_channel_tripday">Travel day</string>
+    <string name="push_fallback_body">New notification</string>
+    <string name="push_channel_tripday_description">The day of a running trip and its next stop.</string>
+</resources>

client/android/app/src/main/res/values/styles.xml

@@ -16,6 +16,19 @@
     </style>
 
 
+    <!-- The app's own Compose screens; Compose paints the rest. -->
+    <style name="AppTheme.Native" parent="Theme.AppCompat.DayNight.NoActionBar">
+        <item name="android:windowBackground">@android:color/transparent</item>
+    </style>
+
+    <!-- The share sheet: a see-through window the bottom sheet rises over. -->
+    <style name="AppTheme.Sheet" parent="Theme.AppCompat.DayNight.NoActionBar">
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowAnimationStyle">@null</item>
+        <item name="android:backgroundDimEnabled">false</item>
+    </style>
+
     <style name="AppTheme.NoActionBarLaunch" parent="Theme.SplashScreen">
         <item name="android:background">@drawable/splash</item>
         <!-- Android 12+ draws its own launch screen: the app icon on this colour.

client/android/app/src/main/res/xml/shortcuts.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The trips as direct share targets: the share sheet offers the trip shortcuts
+     TrekShortcuts publishes (category TRIP_SHARE) for these types, and a tap opens
+     the share sheet with that trip already picked. -->
+<shortcuts xmlns:android="http://schemas.android.com/apk/res/android">
+    <share-target android:targetClass="com.liketrek.trek.share.ShareActivity">
+        <data android:mimeType="application/pdf" />
+        <data android:mimeType="application/vnd.apple.pkpass" />
+        <data android:mimeType="message/rfc822" />
+        <data android:mimeType="text/calendar" />
+        <data android:mimeType="text/html" />
+        <data android:mimeType="text/plain" />
+        <data android:mimeType="image/*" />
+        <category android:name="com.liketrek.trek.category.TRIP_SHARE" />
+    </share-target>
+</shortcuts>

client/android/app/src/main/res/xml/widget_atlas.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The atlas widget (widget/TrekWidgets.kt). Sizes in cells for Android 12+, dp before. -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_atlas_description"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="110dp"
+    android:maxResizeWidth="530dp"
+    android:maxResizeHeight="450dp"
+    android:targetCellWidth="4"
+    android:targetCellHeight="2"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:previewImage="@drawable/widget_preview_atlas" />

client/android/app/src/main/res/xml/widget_bookings.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The bookings widget (widget/TrekWidgets.kt). Sizes in cells for Android 12+, dp before. -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_bookings_description"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="110dp"
+    android:maxResizeWidth="530dp"
+    android:maxResizeHeight="450dp"
+    android:targetCellWidth="4"
+    android:targetCellHeight="2"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:configure="com.liketrek.trek.widget.WidgetConfigActivity"
+    android:widgetFeatures="reconfigurable|configuration_optional"
+    android:previewImage="@drawable/widget_preview_bookings" />

client/android/app/src/main/res/xml/widget_collab.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The collab widget (widget/TrekWidgets.kt). Sizes in cells for Android 12+, dp before. -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_collab_description"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="110dp"
+    android:maxResizeWidth="530dp"
+    android:maxResizeHeight="450dp"
+    android:targetCellWidth="4"
+    android:targetCellHeight="2"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:configure="com.liketrek.trek.widget.WidgetConfigActivity"
+    android:widgetFeatures="reconfigurable|configuration_optional"
+    android:previewImage="@drawable/widget_preview_collab" />

client/android/app/src/main/res/xml/widget_packing.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The packing widget (widget/TrekWidgets.kt). Sizes in cells for Android 12+, dp before. -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_packing_description"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="110dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="110dp"
+    android:maxResizeWidth="530dp"
+    android:maxResizeHeight="450dp"
+    android:targetCellWidth="2"
+    android:targetCellHeight="2"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:configure="com.liketrek.trek.widget.WidgetConfigActivity"
+    android:widgetFeatures="reconfigurable|configuration_optional"
+    android:previewImage="@drawable/widget_preview_packing" />

client/android/app/src/main/res/xml/widget_today.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The today widget (widget/TrekWidgets.kt). Sizes in cells for Android 12+, dp before. -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_today_description"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="110dp"
+    android:maxResizeWidth="530dp"
+    android:maxResizeHeight="450dp"
+    android:targetCellWidth="4"
+    android:targetCellHeight="2"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:configure="com.liketrek.trek.widget.WidgetConfigActivity"
+    android:widgetFeatures="reconfigurable|configuration_optional"
+    android:previewImage="@drawable/widget_preview_today" />

client/android/app/src/main/res/xml/widget_todos.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The todos widget (widget/TrekWidgets.kt). Sizes in cells for Android 12+, dp before. -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_todos_description"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="110dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="110dp"
+    android:maxResizeWidth="530dp"
+    android:maxResizeHeight="450dp"
+    android:targetCellWidth="2"
+    android:targetCellHeight="2"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:configure="com.liketrek.trek.widget.WidgetConfigActivity"
+    android:widgetFeatures="reconfigurable|configuration_optional"
+    android:previewImage="@drawable/widget_preview_todos" />

client/android/app/src/main/res/xml/widget_trip.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- The trip widget (widget/TrekWidgets.kt). Sizes in cells for Android 12+, dp before. -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_trip_description"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="110dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="110dp"
+    android:maxResizeWidth="530dp"
+    android:maxResizeHeight="450dp"
+    android:targetCellWidth="2"
+    android:targetCellHeight="2"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:configure="com.liketrek.trek.widget.WidgetConfigActivity"
+    android:widgetFeatures="reconfigurable|configuration_optional"
+    android:previewImage="@drawable/widget_preview_trip" />

client/android/app/src/test/java/com/liketrek/trek/ClientIdentityTest.kt

@@ -0,0 +1,89 @@
+package com.liketrek.trek
+
+import com.liketrek.trek.clientcert.ClientCertWatch
+import com.liketrek.trek.clientcert.TrekClientIdentity
+import com.liketrek.trek.clientcert.TrekClientIdentity.Failure
+import java.util.Date
+import javax.security.auth.x500.X500Principal
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Assert.fail
+import org.junit.Test
+
+/**
+ * Reading a client certificate file (TrekClientIdentity.read) and the rule for
+ * which server sees it. The files in test/resources/clientcert are test-only:
+ * a throwaway CA, password "trek-test". valid.p12 has OpenSSL 3's default
+ * encryption (AES-256, PBKDF2), valid-legacy.p12 the older RC2/3DES one that
+ * many routers and NAS systems still export.
+ */
+class ClientIdentityTest {
+    private val password = "trek-test".toCharArray()
+    private val inside = Date(1_800_000_000_000L) // 2027-01-15, inside every valid test certificate
+
+    private fun file(name: String): ByteArray =
+        requireNotNull(javaClass.classLoader?.getResourceAsStream("clientcert/$name")) { name }.use { it.readBytes() }
+
+    private fun failure(name: String, pass: CharArray = password, now: Date = inside): Failure {
+        try {
+            TrekClientIdentity.read(file(name), pass, now)
+        } catch (e: TrekClientIdentity.ImportException) {
+            return e.reason
+        }
+        fail("$name opened")
+        throw AssertionError()
+    }
+
+    @Test
+    fun opensModernAndLegacyFiles() {
+        for (name in listOf("valid.p12", "valid-legacy.p12")) {
+            val identity = TrekClientIdentity.read(file(name), password, inside)
+            assertEquals("trek-test-valid", TrekClientIdentity.commonName(identity.chain[0].subjectX500Principal))
+            assertEquals("TREK mTLS Test CA", TrekClientIdentity.commonName(identity.chain[0].issuerX500Principal))
+            assertEquals("RSA", identity.key.algorithm)
+        }
+    }
+
+    @Test
+    fun namesWhatIsWrongWithAFile() {
+        assertEquals(Failure.PASSWORD, failure("valid.p12", "wrong".toCharArray()))
+        assertEquals(Failure.PASSWORD, failure("valid-legacy.p12", "wrong".toCharArray()))
+        assertEquals(Failure.EXPIRED, failure("expired.p12"))
+        assertEquals(Failure.NOT_YET_VALID, failure("future.p12"))
+        assertEquals(Failure.NO_KEY, failure("cert-only.p12"))
+        try {
+            TrekClientIdentity.read("not a certificate".toByteArray(), password, inside)
+            fail("text opened")
+        } catch (e: TrekClientIdentity.ImportException) {
+            assertEquals(Failure.FORMAT, e.reason)
+        }
+    }
+
+    @Test
+    fun showsTheCertificateOnlyToItsHostAndPort() {
+        assertTrue(TrekClientIdentity.matches("trek.example.com", 443, "Trek.Example.com", -1))
+        assertTrue(TrekClientIdentity.matches("trek.example.com", 443, "trek.example.com", 443))
+        assertTrue(TrekClientIdentity.matches("nas.local", 8443, "nas.local", 8443))
+        assertFalse(TrekClientIdentity.matches("trek.example.com", 443, "auth.example.com", 443))
+        assertFalse(TrekClientIdentity.matches("trek.example.com", 443, "trek.example.com", 8443))
+        assertFalse(TrekClientIdentity.matches("nas.local", 8443, "nas.local", -1))
+        assertFalse(TrekClientIdentity.matches("trek.example.com", 443, null, 443))
+    }
+
+    @Test
+    fun leavesForTheAddressScreenOnlyWhenTheCertificateIsWhatFails() {
+        assertTrue(ClientCertWatch.refused(true, 0)) // handshake broken off: nginx, Caddy, Traefik
+        assertTrue(ClientCertWatch.refused(true, 403)) // Cloudflare's block page
+        assertTrue(ClientCertWatch.refused(true, 400)) // nginx without a valid certificate
+        assertFalse(ClientCertWatch.refused(true, 200)) // asks, but lets everyone in
+        assertFalse(ClientCertWatch.refused(true, 502)) // TREK restarting behind the proxy
+        assertFalse(ClientCertWatch.refused(false, 0)) // simply offline
+    }
+
+    @Test
+    fun readsTheCommonNameOrFallsBackToTheWholeName() {
+        assertEquals("Phone, home", TrekClientIdentity.commonName(X500Principal("CN=Phone\\, home,O=Family")))
+        assertEquals("O=Family", TrekClientIdentity.commonName(X500Principal("O=Family")))
+    }
+}

client/android/app/src/test/java/com/liketrek/trek/NativeLogicTest.kt

@@ -0,0 +1,193 @@
+package com.liketrek.trek
+
+import android.view.KeyEvent
+import com.android.billingclient.api.Purchase
+import com.liketrek.trek.billing.TrekBilling
+import com.liketrek.trek.screen.TrekKeyCommands
+import com.liketrek.trek.screen.TrekWindowLayout
+import com.liketrek.trek.share.ShareHandoff
+import com.liketrek.trek.share.ShareItem
+import com.liketrek.trek.share.ShareLoader
+import com.liketrek.trek.tiles.TrekTileStore
+import java.time.LocalDate
+import org.json.JSONArray
+import org.json.JSONObject
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+/** The native side's own decisions, apart from the views. */
+class NativeLogicTest {
+    @Test
+    fun aRedirectAwayWhileTheServerLoadsIsTakenAsItsSignIn() {
+        val server = "https://trek.example.com"
+        // Authelia in front of the page, its check let through on /api.
+        assertEquals("auth.example.com", SignInRedirect.learnedHost(server, "https://auth.example.com/?rd=https%3A%2F%2Ftrek.example.com%2F", true, true, false))
+        assertEquals("auth.example.com:9091", SignInRedirect.learnedHost(server, "https://Auth.example.com:9091/", true, true, false))
+        // A link the user follows, a frame, or anything after the server's page has shown: the browser, as before.
+        assertNull(SignInRedirect.learnedHost(server, "https://auth.example.com/", true, false, false))
+        assertNull(SignInRedirect.learnedHost(server, "https://auth.example.com/", false, true, false))
+        assertNull(SignInRedirect.learnedHost(server, "https://auth.example.com/", true, true, true))
+        // The server's own host, another scheme, or a step down to plain http.
+        assertNull(SignInRedirect.learnedHost(server, "https://trek.example.com/login", true, true, false))
+        assertNull(SignInRedirect.learnedHost(server, "intent://auth.example.com/", true, true, false))
+        assertNull(SignInRedirect.learnedHost(server, "http://auth.example.com/", true, true, false))
+        assertEquals("auth.lan", SignInRedirect.learnedHost("http://trek.lan:3000", "http://auth.lan/", true, true, false))
+        assertNull(SignInRedirect.learnedHost(null, "https://auth.example.com/", true, true, false))
+        assertTrue(SignInRedirect.onServer(server, "https://TREK.example.com/dashboard"))
+        assertFalse(SignInRedirect.onServer(server, "https://auth.example.com/"))
+    }
+
+    @Test
+    fun pushesLandInTheChannelOfTheirEvent() {
+        assertEquals(TrekPushService.CHANNEL_CHAT, TrekPushService.channelFor("collab_message"))
+        assertEquals(TrekPushService.CHANNEL_TRIPS, TrekPushService.channelFor("booking_change"))
+        assertEquals(TrekPushService.CHANNEL_TRIPS, TrekPushService.channelFor("todo_due"))
+        assertEquals(TrekPushService.CHANNEL_INVITES, TrekPushService.channelFor("trip_invite"))
+        assertEquals(TrekPushService.CHANNEL, TrekPushService.channelFor("version_available"))
+        // A server too old to name the event: the general channel.
+        assertEquals(TrekPushService.CHANNEL, TrekPushService.channelFor(null))
+    }
+
+    @Test
+    fun sharedFilesAreSortedByWhatTheyAre() {
+        assertEquals(ShareItem.Kind.PASS to "application/vnd.apple.pkpass", ShareLoader.classify("Boarding.pkpass", "application/octet-stream"))
+        assertEquals(ShareItem.Kind.PDF to "application/pdf", ShareLoader.classify("ticket", "application/pdf"))
+        assertEquals(ShareItem.Kind.MAIL to "message/rfc822", ShareLoader.classify("Booking.eml", "application/octet-stream"))
+        assertEquals(ShareItem.Kind.CALENDAR to "text/calendar", ShareLoader.classify("invite.ics", ""))
+        assertEquals(ShareItem.Kind.IMAGE to "image/png", ShareLoader.classify("shot.png", "image/png"))
+        assertEquals(ShareItem.Kind.FILE to "application/zip", ShareLoader.classify("a.zip", "application/zip"))
+    }
+
+    @Test
+    fun aSharedLinkIsFetchedOnlyWhenTheTextIsLittleMore() {
+        assertEquals("https://example.com/booking/1", ShareLoader.firstLink("Your booking: https://example.com/booking/1."))
+        assertNull(ShareLoader.firstLink("no link here"))
+        assertNull(ShareLoader.firstLink("x".repeat(400) + " https://example.com/a"))
+        assertEquals("Hotel Kanra", ShareLoader.pageTitle("<html><head><TITLE> Hotel Kanra </TITLE></head></html>"))
+        assertEquals("hotel-kanra-kyoto", ShareLoader.slug("Hotel Kanra, Kyoto!"))
+        assertEquals("page", ShareLoader.slug("!!!"))
+    }
+
+    @Test
+    fun aLinkWhosePageCannotBeReadIsHandedOverAsTheLinkItself() {
+        val item = ShareLoader.linkOnly("https://www.instagram.com/p/abc", null)
+        assertEquals("text/uri-list", item.mimeType)
+        assertEquals("https://www.instagram.com/p/abc", item.url)
+        assertEquals("https://www.instagram.com/p/abc", String(item.data))
+        assertEquals("www.instagram.com", item.title)
+        assertEquals("Ramen place", ShareLoader.linkOnly("https://maps.app.goo.gl/x", "Ramen place").title)
+    }
+
+    @Test
+    fun theShareSheetOffersComingTripsFirstThenRecentPastOnes() {
+        val today = LocalDate.of(2026, 11, 7)
+        fun trip(id: Long, start: String, end: String) =
+            ShareHandoff.Trip(id, "T$id", LocalDate.parse(start), LocalDate.parse(end), null, null)
+        val past = (1L..8L).map { trip(100 + it, "2026-0$it-01", "2026-0$it-05") }
+        val ordered = ShareHandoff.order(
+            listOf(trip(1, "2026-12-01", "2026-12-05"), trip(2, "2026-11-05", "2026-11-09")) + past,
+            today,
+        )
+        assertEquals(listOf(2L, 1L), ordered.take(2).map { it.id })
+        assertEquals(8, ordered.size)
+        assertEquals(108L, ordered[2].id)
+    }
+
+    @Test
+    fun keyCommandsFollowTheUi() {
+        TrekKeyCommands.set(
+            JSONArray(
+                """[{"id":"search","title":"Search","input":"k","modifiers":["command"]},
+                   {"id":"back","title":"Back","input":"[","modifiers":["command"]},
+                   {"id":"close","title":"Close","input":"escape","modifiers":[]},
+                   {"title":"no id","input":"x"}]""",
+            ),
+        )
+        assertEquals(3, TrekKeyCommands.current.size)
+        assertEquals("search", TrekKeyCommands.match(KeyEvent.KEYCODE_K, KeyEvent.META_CTRL_ON)?.id)
+        // A Mac keyboard's Command key is Meta here, and counts as Ctrl.
+        assertEquals("search", TrekKeyCommands.match(KeyEvent.KEYCODE_K, KeyEvent.META_META_ON)?.id)
+        assertNull(TrekKeyCommands.match(KeyEvent.KEYCODE_K, 0))
+        assertNull(TrekKeyCommands.match(KeyEvent.KEYCODE_K, KeyEvent.META_CTRL_ON or KeyEvent.META_SHIFT_ON))
+        assertEquals("back", TrekKeyCommands.match(KeyEvent.KEYCODE_LEFT_BRACKET, KeyEvent.META_CTRL_ON)?.id)
+        assertEquals("close", TrekKeyCommands.match(KeyEvent.KEYCODE_ESCAPE, 0)?.id)
+        TrekKeyCommands.set(null)
+        assertEquals(0, TrekKeyCommands.current.size)
+    }
+
+    @Test
+    fun windowSizeClassesUseAndroidsBreakpoints() {
+        assertEquals("compact", TrekWindowLayout.sizeClass(411f, 600f, 840f))
+        assertEquals("medium", TrekWindowLayout.sizeClass(673f, 600f, 840f))
+        assertEquals("expanded", TrekWindowLayout.sizeClass(1280f, 600f, 840f))
+    }
+
+    @Test
+    fun aRestoreTakesTheNewestActiveCloudSubscription() {
+        fun purchase(product: String, time: Long, state: Int) = Purchase(
+            JSONObject()
+                .put("productIds", JSONArray().put(product))
+                .put("purchaseTime", time)
+                .put("purchaseState", state)
+                .put("purchaseToken", "token-$product-$time")
+                .toString(),
+            "sig",
+        )
+        val found = TrekBilling.newest(
+            listOf(
+                purchase("cloud.start.monthly", 1000, 0),
+                purchase("cloud.plus.yearly", 2000, 0),
+                purchase("cloud.pro.yearly", 3000, 4),
+                purchase("other.thing", 4000, 0),
+            ),
+            "cloud.",
+        )
+        assertEquals("token-cloud.plus.yearly-2000", found?.purchaseToken)
+        assertNull(TrekBilling.newest(emptyList(), "cloud."))
+    }
+
+    @Test
+    fun mapboxRequestsKeepTheWebViewsHeaders() {
+        val forwarded = TrekTileStore.forwardedHeaders(
+            mapOf(
+                "Referer" to "https://trek.example.com/",
+                "Origin" to "https://trek.example.com",
+                "User-Agent" to "Mozilla/5.0 (Linux; Android 16; wv)",
+                "Accept" to "application/x-protobuf",
+                "Accept-Encoding" to "gzip",
+                "Connection" to "keep-alive",
+                "Host" to "api.mapbox.com",
+            ),
+        )
+        // A URL-restricted token is checked against the Referer, so it has to go along.
+        assertEquals("https://trek.example.com/", forwarded["Referer"])
+        assertEquals("https://trek.example.com", forwarded["Origin"])
+        assertEquals("Mozilla/5.0 (Linux; Android 16; wv)", forwarded["User-Agent"])
+        assertEquals("application/x-protobuf", forwarded["Accept"])
+        assertNull(forwarded["Accept-Encoding"])
+        assertNull(forwarded["Connection"])
+        assertNull(forwarded["Host"])
+        assertEquals(emptyMap<String, String>(), TrekTileStore.forwardedHeaders(null))
+    }
+
+    @Test
+    fun aPaymentThatClearedLaterIsTheUndeliveredOne() {
+        fun purchase(product: String, time: Long, acknowledged: Boolean) = Purchase(
+            JSONObject()
+                .put("productIds", JSONArray().put(product))
+                .put("purchaseTime", time)
+                .put("purchaseState", 0)
+                .put("acknowledged", acknowledged)
+                .put("purchaseToken", "token-$time")
+                .toString(),
+            "sig",
+        )
+        val renewed = purchase("cloud.plus.yearly", 3000, acknowledged = true)
+        val cleared = purchase("cloud.start.monthly", 2000, acknowledged = false)
+        assertEquals("token-2000", TrekBilling.undelivered(listOf(renewed, cleared), "cloud.")?.purchaseToken)
+        assertNull(TrekBilling.undelivered(listOf(renewed), "cloud."))
+    }
+}

client/android/app/src/test/java/com/liketrek/trek/widget/WidgetSnapshotTest.kt

@@ -0,0 +1,102 @@
+package com.liketrek.trek.widget
+
+import java.time.LocalDate
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNotNull
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class WidgetSnapshotTest {
+    private val today = LocalDate.of(2026, 11, 7)
+
+    @Test
+    fun readsTheSampleTheIosWidgetsReadToo() {
+        val snapshot = WidgetSnapshot.parse(WidgetSamples.json(running = true, now = today))!!
+        assertEquals("Autumn in Kyoto", snapshot.trip!!.title)
+        assertEquals("/trips/1", snapshot.trip!!.path)
+        assertEquals(5, snapshot.today!!.stops.size)
+        assertEquals(810, snapshot.today!!.stops[2].minutes)
+        assertEquals("leaf.fill", snapshot.today!!.stops[2].symbol)
+        assertEquals(5, snapshot.bookings.size)
+        assertTrue(snapshot.bookings[0].confirmed)
+        assertEquals(2, snapshot.packing!!.bags.size)
+        assertEquals(23000, snapshot.packing!!.bags[0].limit)
+        assertEquals(23, snapshot.atlas!!.count)
+        assertEquals("Nara", snapshot.collab!!.poll!!.options[0].label)
+        assertTrue(snapshot.collab!!.messages.last().mine)
+    }
+
+    @Test
+    fun everythingPastTripTodayAndLabelsIsOptional() {
+        val snapshot = WidgetSnapshot.parse("""{"trip":null,"today":null,"labels":{"nextTrip":"Nächste Reise"}}""")!!
+        assertNull(snapshot.trip)
+        assertNull(snapshot.weather)
+        assertTrue(snapshot.bookings.isEmpty())
+        assertEquals("Nächste Reise", snapshot.labels.nextTrip)
+        // A label the server's UI does not send yet falls back to English.
+        assertEquals("Travel group", snapshot.labels.group)
+        assertEquals("Today", snapshot.labels.todayShort)
+    }
+
+    @Test
+    fun brokenJsonIsNoSnapshot() {
+        assertNull(WidgetSnapshot.parse("{"))
+        assertNull(WidgetSnapshot.parse(""))
+    }
+
+    @Test
+    fun countsTheDaysToTheTripAndItsLength() {
+        val snapshot = WidgetSnapshot.parse(WidgetSamples.json(running = false, now = today))!!
+        assertEquals(12L, snapshot.daysUntilStart(today))
+        assertEquals(9, snapshot.tripLength)
+        val noCount = WidgetSnapshot.parse("""{"trip":{"title":"T","start":"2026-11-10","end":"2026-11-12","path":"/trips/2"},"labels":{}}""")!!
+        assertEquals(3, noCount.tripLength)
+    }
+
+    @Test
+    fun aTapOpensThePathInTheApp() {
+        assertEquals("com.liketrek.trek://navigate/trips/1", WidgetSnapshot.link("/trips/1"))
+        assertEquals("com.liketrek.trek://navigate/atlas", WidgetSnapshot.link("atlas"))
+    }
+
+    @Test
+    fun readsTheTripListAndSkipsWhatIsNotATrip() {
+        val trips = TripRef.parseList("""[{"id":1,"title":"A","start":"2026-11-01","end":"2026-11-03"},{"title":"no id"},3]""")
+        assertEquals(1, trips.size)
+        assertEquals(1L, trips[0].id)
+        assertTrue(TripRef.parseList("not json").isEmpty())
+        assertTrue(TripRef.parseList(null).isEmpty())
+    }
+
+    @Test
+    fun keysAreTheOnesTheUiWrites() {
+        assertTrue(WidgetStore.isValidKey("snapshot"))
+        assertTrue(WidgetStore.isValidKey("trips"))
+        assertTrue(WidgetStore.isValidKey("trip.42"))
+        assertFalse(WidgetStore.isValidKey("trip.../x"))
+        assertFalse(WidgetStore.isValidKey("../snapshot"))
+        assertFalse(WidgetStore.isValidKey("trip.1234567890123"))
+    }
+
+    @Test
+    fun theWorldGridHasItsShape() {
+        assertEquals(34, WorldGrid.ROWS.size)
+        WorldGrid.ROWS.forEach { assertEquals(WorldGrid.COLUMNS * 2, it.length) }
+        assertNotNull((0 until 34).flatMap { r -> (0 until WorldGrid.COLUMNS).mapNotNull { WorldGrid.code(r, it) } }.firstOrNull { it == "JP" })
+    }
+
+    @Test
+    fun aTripKeepsItsColoursAcrossLaunches() {
+        assertEquals(WidgetArt.seed("Autumn in Kyoto"), WidgetArt.seed("Autumn in Kyoto"))
+        assertFalse(WidgetArt.seed("Lisbon") == WidgetArt.seed("Kyoto"))
+    }
+
+    @Test
+    fun bookingKindsHaveTheirSymbol() {
+        assertEquals("airplane", TrekIcons.booking("flight").first)
+        assertEquals("ferry.fill", TrekIcons.booking("cruise").first)
+        assertEquals("bookmark.fill", TrekIcons.booking("something").first)
+    }
+}