feat(native): the app needs TREK 5.1.4 on the server

nativeApi goes to 3 with 5.1.4, whose UI follows a widget or Live Activity
tap that starts the app. The apps refuse an older server with the hint to
update, and check a server they remember once more.

.github/workflows/docker-dev.yml

@@ -175,7 +175,7 @@ jobs:
 
       - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
 
-      - uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4.7.0
+      - uses: docker/login-action@8aa5831fb8d48d8f76594c7ddde61ae58019f550 # v4.8.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -236,7 +236,7 @@ jobs:
 
       - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
 
-      - uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4.7.0
+      - uses: docker/login-action@8aa5831fb8d48d8f76594c7ddde61ae58019f550 # v4.8.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}

.github/workflows/docker.yml

@@ -344,7 +344,7 @@ jobs:
 
       - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
 
-      - uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4.7.0
+      - uses: docker/login-action@8aa5831fb8d48d8f76594c7ddde61ae58019f550 # v4.8.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -403,7 +403,7 @@ jobs:
 
       - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
 
-      - uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4.7.0
+      - uses: docker/login-action@8aa5831fb8d48d8f76594c7ddde61ae58019f550 # v4.8.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}

.github/workflows/native-release.yml

@@ -49,7 +49,7 @@ jobs:
           node-version-file: .nvmrc
           cache: npm
 
-      - uses: actions/setup-java@v5
+      - uses: actions/setup-java@v6
         with:
           distribution: temurin
           java-version: 21
@@ -111,19 +111,21 @@ jobs:
 
   ios:
     if: github.repository == 'liketrek/TREK'
-    runs-on: macos-15
+    runs-on: xcode-27
     timeout-minutes: 60
     environment: store
     steps:
       - uses: actions/checkout@v6
 
-      # App Store uploads must be built with Xcode 26; the image's default is older.
-      - name: Select Xcode 26
+      # The iOS 27.1 SDK, on the xcode-27 image: an app built against an older SDK
+      # runs letterboxed on the inner display of an iPhone Duo.
+      - name: Select Xcode 27.1
         run: |
-          XCODE=$(ls -d /Applications/Xcode_26*.app | sort -V | tail -1)
-          test -n "$XCODE"
+          XCODE=/Applications/Xcode_27.1.app
+          test -d "$XCODE"
           sudo xcode-select -s "$XCODE"
           xcodebuild -version
+          xcodebuild -showsdks | grep iphoneos27.1
 
       - uses: actions/setup-node@v6
         with:

.github/workflows/native.yml

@@ -60,7 +60,7 @@ jobs:
           node-version-file: .nvmrc
           cache: npm
 
-      - uses: actions/setup-java@v5
+      - uses: actions/setup-java@v6
         with:
           distribution: temurin
           java-version: 21
@@ -90,18 +90,20 @@ jobs:
           retention-days: 14
 
   ios:
-    runs-on: macos-15
+    runs-on: xcode-27
     timeout-minutes: 40
     steps:
       - uses: actions/checkout@v6
 
-      # App Store uploads must be built with Xcode 26; the image's default is older.
-      - name: Select Xcode 26
+      # The iOS 27.1 SDK, on the xcode-27 image: an app built against an older SDK
+      # runs letterboxed on the inner display of an iPhone Duo.
+      - name: Select Xcode 27.1
         run: |
-          XCODE=$(ls -d /Applications/Xcode_26*.app | sort -V | tail -1)
-          test -n "$XCODE"
+          XCODE=/Applications/Xcode_27.1.app
+          test -d "$XCODE"
           sudo xcode-select -s "$XCODE"
           xcodebuild -version
+          xcodebuild -showsdks | grep iphoneos27.1
 
       - 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 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

.github/workflows/security.yml

@@ -74,7 +74,7 @@ jobs:
           load: true
           tags: trek:scan
 
-      - uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4.7.0
+      - uses: docker/login-action@8aa5831fb8d48d8f76594c7ddde61ae58019f550 # v4.8.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}

.github/workflows/test.yml

@@ -1100,7 +1100,7 @@ jobs:
           path: plugin-sdk/coverage/
 
       - name: Scan
-        uses: SonarSource/sonarqube-scan-action@4d1dc0c91ee400dcf8a6dddf2f705ac36542e304 # v8.4.0
+        uses: SonarSource/sonarqube-scan-action@e805d875275f728fac1885b413934be6d7c63f65 # v8.4.1
         env:
           # SonarQube Cloud is the scan action's default host, so no
           # SONAR_HOST_URL — the token is a sonarcloud.io token for the

NOTICE.md

@@ -20,7 +20,23 @@ geoBoundaries is licensed under **CC BY 4.0**
 The bundled files are simplified (coordinate-quantized) and re-tagged with the
 property names TREK consumes. Country borders (`admin0`) derive from the geoBoundaries
 CGAZ composite; sub-national regions (`admin1`) derive from the per-country open
-(gbOpen) release.
+(gbOpen) release, except for Ireland (below).
+
+## Tailte Éireann — counties of Ireland
+
+Ireland's regions in the same files (`admin1/IE.geojson.gz`, and its features in
+`admin1.geojson.gz`) are the 26 counties from Tailte Éireann's *Counties - National
+Statutory Boundaries - 2019 - Generalised 20m*, because geoBoundaries has no county
+layer for Ireland.
+
+Contains Tailte Éireann data, © Tailte Éireann, licensed under **CC BY 4.0**
+(https://creativecommons.org/licenses/by/4.0/). Source:
+https://data-osi.opendata.arcgis.com/
+
+The outlines are simplified, coordinate-quantized and re-tagged with ISO 3166-2:IE
+codes by `server/scripts/build-atlas-geo.mjs`. Tailte Éireann publishes the
+generalised boundaries for reference only; they may not match the statutory
+boundaries exactly.
 
 ## OpenStreetMap — geocoding, place details & descriptions
 

README.md

@@ -146,7 +146,7 @@ Most of what follows is an addon an admin switches on or off. Lists, Costs, Docu
 #### 🗺️ Atlas, Vacay and Collections
 
 - **Atlas**: countries and regions visited on [geoBoundaries](https://www.geoboundaries.org/) outlines, a bucket list, travel stats, and a tour activities tab with planned against recorded totals
-- **Vacay**: leave calendar with half days, public holidays from date.nager.at, school holidays for 16 European countries, company holidays, carry-over between years, and joint or read-only sharing
+- **Vacay**: leave calendar with half days, public holidays from [nagerholidays.com](https://nagerholidays.com), school holidays for 16 European countries, company holidays, carry-over between years, and joint or read-only sharing
 - **Collections** (off by default): a place library outside any trip with lists, labels, ratings, a status per place, cover images, GPX and file export, copy into a trip, and sharing by invite
 - **Dawarich** (off by default): link a Dawarich instance for recorded tracks, suggested stays and countries for the Atlas
 
@@ -276,6 +276,8 @@ Open `http://localhost:3000`, or `http://<server-ip>:3000` from another machine.
 
 `COOKIE_SECURE=false` is only for trying TREK over plain HTTP: without it the browser drops the session cookie and the login does not stick. Once TREK sits behind HTTPS (see [Reverse Proxy](#reverse-proxy)), remove it.
 
+**TrueNAS SCALE:** Install TREK directly from the Community catalog. See the [TrueNAS SCALE installation guide](https://github.com/liketrek/TREK/wiki/Install-TrueNAS-SCALE).
+
 > [!TIP]
 > **No server yet?** TREK's own public services run on [**dataforest cloud**](https://cloud.dataforest.net/en?mtm_campaign=trek), our infrastructure sponsor. A small seed is plenty for a TREK instance and is ready within a minute.
 
@@ -348,7 +350,7 @@ TREK then launches fullscreen with its own icon, just like a native app.
 ## Updating
 
 See [Updating](https://github.com/liketrek/TREK/wiki/Updating) — Docker Compose,
-Docker run, Helm, Portainer, Unraid and Proxmox, plus the encryption-key note.
+Docker run, Helm, Portainer, Unraid, TrueNAS SCALE and Proxmox, plus the encryption-key note.
 
 <br />
 
@@ -437,8 +439,9 @@ Every variable, its default and what it does: see
 
 The Atlas map's country and sub-national (province/county) boundaries come from
 [**geoBoundaries**](https://www.geoboundaries.org/) (Runfola et al., 2020), licensed
-[CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). See [NOTICE.md](NOTICE.md)
-for full third-party attributions.
+[CC BY 4.0](https://creativecommons.org/licenses/by/4.0/); Ireland's counties come from
+[**Tailte Éireann**](https://data-osi.opendata.arcgis.com/), also CC BY 4.0. See
+[NOTICE.md](NOTICE.md) for full third-party attributions.
 
 <br />
 

charts/trek/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
 name: trek
-version: 5.1.2
+version: 5.1.3
 description: Minimal Helm chart for TREK app
-appVersion: "5.1.2"
+appVersion: "5.1.3"

client/CLAUDE.md

@@ -6,7 +6,7 @@ Scope: the **`@trek/client`** workspace (React 19 + Vite + Zustand + Tailwind PW
 
 ```bash
 npm run dev               # Vite dev server; proxies the API/ws/uploads/MCP/OAuth paths → http://localhost:3001
-npm run build             # prebuild generates PWA icons, then vite build
+npm run build             # prebuild generates PWA icons, then vite build; postbuild writes a Brotli copy beside each hashed asset for the server to hand out
 npm run typecheck         # tsc --noEmit (CI)
 npm run lint:strict       # tsc over tsconfig.strict.json (strictNullChecks + noImplicitAny): errors per file may only shrink against scripts/strict-baseline.json, a new file starts at zero (CI gate; --list shows them, --update lowers it)
 npm run lint              # eslint .   (CI runs lint:warnings instead, which fails on the same errors)

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

@@ -1,11 +1,19 @@
 package com.liketrek.trek;
 
 import android.content.Intent;
+import android.graphics.drawable.GradientDrawable;
 import android.os.Bundle;
+import android.util.TypedValue;
+import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.KeyboardShortcutGroup;
 import android.view.Menu;
 import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+import android.widget.TextView;
 import com.getcapacitor.BridgeActivity;
 import com.liketrek.trek.screen.TrekKeyCommands;
 import com.liketrek.trek.tiles.TrekTileStore;
@@ -26,6 +34,7 @@ public class MainActivity extends BridgeActivity {
         // runs and on its own origin. BridgeActivity reads `config` while it
         // builds the bridge inside super.onCreate().
         boolean restarting = TrekServerStore.consumeRestart(this);
+        TrekServerStore.recheckAfterUpdate(this);
         String server = TrekServerStore.getUrl(this);
         boolean onServer = server != null && !TrekServerStore.consumeShellOnce(this);
         config = TrekServerStore.configFor(this, onServer ? server : null, restarting);
@@ -36,7 +45,17 @@ 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, TrekServerStore.getSignInHosts(this)));
+        if (onServer) {
+            bridge.setWebViewClient(
+                new TrekWebViewClient(
+                    bridge,
+                    this::showAddressScreen,
+                    this::showSignInBar,
+                    this::showErrorPageBar,
+                    TrekServerStore.getSignInHosts(this)
+                )
+            );
+        }
         TrekSharedFiles.receive(this, getIntent());
         // Android 15's widget picker draws the widgets live from a sample trip.
         TrekWidgetUpdater.publishPreviews(this);
@@ -68,6 +87,122 @@ public class MainActivity extends BridgeActivity {
 
     private boolean leavingServer;
 
+    private View signInBar;
+    /** Whether the page is a proxy's sign-in page, and whether the keyboard is up over it. */
+    private boolean onSignInPage;
+    /** Whether the page is an error page in place of the server's (TrekWebViewClient.onReceivedHttpError). */
+    private boolean onErrorPage;
+    private boolean keyboardUp;
+    private TextView signInHint;
+
+    /**
+     * Over a proxy's sign-in page (Pangolin, authentik, ...): the server's UI is
+     * not there, so nothing else would lead back to the address screen, and a
+     * passkey cannot work in a web view for a domain the app is not tied to.
+     * The bar says so and offers to change the server.
+     */
+    private void showSignInBar(boolean show) {
+        runOnUiThread(() -> {
+            onSignInPage = show;
+            if (show && signInBar == null) signInBar = buildSignInBar();
+            updateSignInBar();
+        });
+    }
+
+    /** The same bar over an error page in place of the server's, with words for that. */
+    private void showErrorPageBar(boolean show) {
+        runOnUiThread(() -> {
+            onErrorPage = show;
+            if (show && signInBar == null) signInBar = buildSignInBar();
+            updateSignInBar();
+        });
+    }
+
+    /** Out of the way while the keyboard is up: the form needs the room, and the bar is there again once it closes. */
+    private void updateSignInBar() {
+        if (signInBar == null) return;
+        if (signInHint != null) {
+            signInHint.setText(onSignInPage ? TrekServerStore.signInHintLabel(this) : TrekServerStore.errorPageHintLabel(this));
+        }
+        signInBar.setVisibility((onSignInPage || onErrorPage) && !keyboardUp ? View.VISIBLE : View.GONE);
+    }
+
+    private View buildSignInBar() {
+        float dp = getResources().getDisplayMetrics().density;
+        LinearLayout bar = new LinearLayout(this);
+        bar.setOrientation(LinearLayout.HORIZONTAL);
+        bar.setGravity(Gravity.CENTER_VERTICAL);
+        bar.setPaddingRelative(Math.round(16 * dp), Math.round(10 * dp), Math.round(10 * dp), Math.round(10 * dp));
+        // The look of the app's own first screens: a white card with a sand edge,
+        // warm grey text and a dark button, over whatever page the proxy shows.
+        GradientDrawable background = new GradientDrawable();
+        background.setColor(0xF7FFFFFF);
+        background.setCornerRadius(18 * dp);
+        background.setStroke(Math.max(1, Math.round(dp)), 0xFFEFE4D8);
+        bar.setBackground(background);
+        bar.setElevation(8 * dp);
+
+        TextView hint = new TextView(this);
+        signInHint = hint;
+        hint.setText(TrekServerStore.signInHintLabel(this));
+        hint.setTextColor(0xFF6B5F57);
+        hint.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12.5f);
+        bar.addView(hint, new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.WRAP_CONTENT, 1f));
+
+        Button change = new Button(this, null, android.R.attr.borderlessButtonStyle);
+        change.setText(TrekServerStore.changeServerLabel(this));
+        change.setAllCaps(false);
+        change.setTextColor(0xFFFFFFFF);
+        GradientDrawable pill = new GradientDrawable();
+        pill.setColor(0xFF111827);
+        pill.setCornerRadius(12 * dp);
+        change.setBackground(pill);
+        change.setMinHeight(0);
+        change.setMinimumHeight(0);
+        change.setPaddingRelative(Math.round(14 * dp), Math.round(9 * dp), Math.round(14 * dp), Math.round(9 * dp));
+        LinearLayout.LayoutParams changeParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        changeParams.setMarginStart(Math.round(10 * dp));
+        change.setOnClickListener((v) -> {
+            TrekServerStore.setUrl(this, null);
+            TrekServerStore.markRestart(this);
+            recreate();
+        });
+        bar.addView(change, changeParams);
+
+        int margin = Math.round(12 * dp);
+        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
+            ViewGroup.LayoutParams.MATCH_PARENT,
+            ViewGroup.LayoutParams.WRAP_CONTENT,
+            Gravity.BOTTOM
+        );
+        params.setMargins(margin, 0, margin, margin);
+        FrameLayout root = findViewById(android.R.id.content);
+        root.addView(bar, params);
+        // Above the gesture bar, and above the keyboard while it is up.
+        bar.setOnApplyWindowInsetsListener((v, insets) -> {
+            // Read off the window's own insets: Capacitor hands the views below the
+            // decor a copy with the system bars zeroed, and before Android 11 that
+            // takes the keyboard with it.
+            androidx.core.view.WindowInsetsCompat window = androidx.core.view.ViewCompat.getRootWindowInsets(getWindow().getDecorView());
+            int bottom = window != null
+                ? window.getInsets(androidx.core.view.WindowInsetsCompat.Type.navigationBars()).bottom
+                : insets.getStableInsetBottom();
+            boolean imeVisible = window != null && window.isVisible(androidx.core.view.WindowInsetsCompat.Type.ime());
+            if (imeVisible != keyboardUp) {
+                keyboardUp = imeVisible;
+                updateSignInBar();
+            }
+            FrameLayout.LayoutParams p = (FrameLayout.LayoutParams) v.getLayoutParams();
+            if (p.bottomMargin != margin + bottom) {
+                p.bottomMargin = margin + bottom;
+                v.setLayoutParams(p);
+            }
+            return insets;
+        });
+        bar.requestApplyInsets();
+        return bar;
+    }
+
     /**
      * The server did not load: back to the address screen, which offers retry
      * and change. A fresh task rather than recreate(), because this usually

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/TrekServerStore.java

@@ -22,6 +22,19 @@ final class TrekServerStore {
 
     private static final String PREFS = "trek_shell";
     private static final String KEY_URL = "server_url";
+    private static final String KEY_PREVIOUS_URL = "previous_server_url";
+    private static final String KEY_SERVER_CHECK = "server_check";
+    private static final String KEY_LABEL_SIGN_IN_HINT = "label_sign_in_hint";
+    private static final String KEY_LABEL_CHANGE_SERVER = "label_change_server";
+    private static final String KEY_LABEL_ERROR_PAGE_HINT = "label_error_page_hint";
+
+    /**
+     * The server API this build needs (MIN_NATIVE_API in serverAddress.ts). A
+     * server remembered under a lower value is checked once more: the first
+     * launch after an update that raised it puts the address screen back up,
+     * filled in with that server (getPreviousUrl). Raise both together.
+     */
+    private static final int SERVER_CHECK = 3;
     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";
@@ -56,6 +69,52 @@ final class TrekServerStore {
         return prefs(context).getString(KEY_URL, null);
     }
 
+    /** Runs before the bridge is built, so a server picked under an older minimum is not loaded unchecked. */
+    static void recheckAfterUpdate(Context context) {
+        SharedPreferences prefs = prefs(context);
+        if (prefs.getInt(KEY_SERVER_CHECK, 0) >= SERVER_CHECK) return;
+        String server = getUrl(context);
+        SharedPreferences.Editor editor = prefs.edit().putInt(KEY_SERVER_CHECK, SERVER_CHECK);
+        if (server != null) editor.remove(KEY_URL).remove(KEY_SIGN_IN_HOSTS).putString(KEY_PREVIOUS_URL, server);
+        editor.commit();
+    }
+
+    /**
+     * The words of the bar over a proxy's sign-in page, in the user's language,
+     * as the address screen passed them (setServer's `labels`): the server's UI
+     * is not there to say them. Null keeps the English fallback.
+     */
+    static void setLabels(Context context, String signInHint, String changeServer, String errorPageHint) {
+        SharedPreferences.Editor editor = prefs(context).edit();
+        if (signInHint != null) editor.putString(KEY_LABEL_SIGN_IN_HINT, signInHint);
+        if (changeServer != null) editor.putString(KEY_LABEL_CHANGE_SERVER, changeServer);
+        if (errorPageHint != null) editor.putString(KEY_LABEL_ERROR_PAGE_HINT, errorPageHint);
+        editor.commit();
+    }
+
+    static String errorPageHintLabel(Context context) {
+        return prefs(context).getString(
+            KEY_LABEL_ERROR_PAGE_HINT,
+            "This page is not from TREK: the server or a proxy in front of it refused the app. Check your proxy or certificate, or change the server."
+        );
+    }
+
+    static String signInHintLabel(Context context) {
+        return prefs(context).getString(
+            KEY_LABEL_SIGN_IN_HINT,
+            "Passkeys and security keys do not work on this page in the app. Sign in with a password, or let the app through your proxy."
+        );
+    }
+
+    static String changeServerLabel(Context context) {
+        return prefs(context).getString(KEY_LABEL_CHANGE_SERVER, "Change server");
+    }
+
+    /** The server an update asked to check again, until a server is set. */
+    static String getPreviousUrl(Context context) {
+        return prefs(context).getString(KEY_PREVIOUS_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);
@@ -66,7 +125,7 @@ final class TrekServerStore {
         if (url == null) {
             editor.remove(KEY_URL);
         } else {
-            editor.putString(KEY_URL, url);
+            editor.putString(KEY_URL, url).remove(KEY_PREVIOUS_URL);
         }
         if (signInHosts == null || signInHosts.isEmpty()) {
             editor.remove(KEY_SIGN_IN_HOSTS);
@@ -89,7 +148,32 @@ final class TrekServerStore {
         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. */
+    private static final String KEY_FAILURE = "last_failure";
+
+    /**
+     * Why the server's page did not load, in the WebView's own terms
+     * ("net::ERR_NAME_NOT_RESOLVED (-2)", "HTTP 503"): the address screen shows
+     * it small under its message, so a report carries the cause.
+     */
+    static void setFailure(Context context, String failure) {
+        prefs(context).edit().putString(KEY_FAILURE, failure).commit();
+    }
+
+    /** The failure behind this address screen, once. */
+    static String takeFailure(Context context) {
+        String failure = prefs(context).getString(KEY_FAILURE, null);
+        if (failure != null) prefs(context).edit().remove(KEY_FAILURE).commit();
+        return failure;
+    }
+
     static void showShellOnce(Context context) {
         prefs(context).edit().putBoolean(KEY_SHELL_ONCE, true).commit();
     }

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

@@ -1,6 +1,8 @@
 package com.liketrek.trek;
 
 import android.Manifest;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Build;
@@ -70,6 +72,7 @@ public class TrekShellPlugin extends Plugin {
         "keyCommands",
         "windowLayout",
         "clientCertificate",
+        "filePreview",
     };
 
     /** liketrek's push relay: the endpoint for this device's FCM token (trek-hosted push-relay.ts). */
@@ -267,11 +270,53 @@ public class TrekShellPlugin extends Plugin {
         call.resolve();
     }
 
+    /**
+     * Opens a file the UI wrote to the cache in the app that views it, a PDF in
+     * the system's PDF viewer, instead of the share sheet. "unsupported" where no
+     * app on the device views the type; the UI then hands it to the share sheet.
+     */
+    @PluginMethod
+    public void previewFile(PluginCall call) {
+        String path = call.getString("path");
+        Uri parsed = path == null ? null : Uri.parse(path);
+        java.io.File file = parsed != null && "file".equals(parsed.getScheme()) && parsed.getPath() != null ? new java.io.File(parsed.getPath()) : null;
+        java.io.File cache = getContext().getCacheDir();
+        boolean inCache;
+        try {
+            inCache = file != null && file.getCanonicalPath().startsWith(cache.getCanonicalPath() + java.io.File.separator);
+        } catch (java.io.IOException e) {
+            inCache = false;
+        }
+        if (!inCache || !file.isFile()) {
+            call.reject("a file in the app's cache is required", "INVALID");
+            return;
+        }
+        String type = call.getString("mimeType", "application/octet-stream");
+        Uri content = androidx.core.content.FileProvider.getUriForFile(getContext(), getContext().getPackageName() + ".fileprovider", file);
+        Intent view = new Intent(Intent.ACTION_VIEW)
+            .setDataAndType(content, type)
+            .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_ACTIVITY_NEW_TASK);
+        getActivity().runOnUiThread(() -> {
+            JSObject result = new JSObject();
+            try {
+                getActivity().startActivity(view);
+                result.put("result", "shown");
+            } catch (ActivityNotFoundException e) {
+                result.put("result", "unsupported");
+            }
+            call.resolve(result);
+        });
+    }
+
     @PluginMethod
     public void getServer(PluginCall call) {
         String url = TrekServerStore.getUrl(getContext());
+        String previous = TrekServerStore.getPreviousUrl(getContext());
         JSObject result = new JSObject();
         result.put("url", url == null ? JSONObject.NULL : url);
+        result.put("previousUrl", previous == null ? JSONObject.NULL : previous);
+        String failure = TrekServerStore.takeFailure(getContext());
+        result.put("failure", failure == null ? JSONObject.NULL : failure);
         call.resolve(result);
     }
 
@@ -284,6 +329,15 @@ public class TrekShellPlugin extends Plugin {
             return;
         }
         TrekServerStore.setServer(getContext(), url, signInHostsOf(call));
+        JSObject labels = call.getObject("labels");
+        if (labels != null) {
+            TrekServerStore.setLabels(
+                getContext(),
+                labels.getString("signInHint"),
+                labels.getString("changeServer"),
+                labels.getString("errorPageHint")
+            );
+        }
         // 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);
@@ -382,7 +436,11 @@ public class TrekShellPlugin extends Plugin {
         }
         Uri data = intent.getData();
         PluginCall call = pendingAuthCall();
-        if (call == null || data == null || !authScheme.equals(data.getScheme())) return;
+        if (call == null) {
+            keepOrphanAuthReturn(intent);
+            return;
+        }
+        if (data == null || !authScheme.equals(data.getScheme())) return;
         JSObject result = new JSObject();
         result.put("url", data.toString());
         call.resolve(result);
@@ -408,6 +466,48 @@ public class TrekShellPlugin extends Plugin {
         }, CANCEL_GRACE_MS);
     }
 
+    private static final String AUTH_PREFS = "trek_auth_return";
+    /** As long as the server keeps the code it carries (NATIVE_HANDOFF_CODE_TTL_MS), with room to spare. */
+    private static final long ORPHAN_AUTH_TTL_MS = 2 * 60 * 1000;
+
+    /**
+     * A return to the sign-in scheme with no call waiting for it: Android ended
+     * the app while the browser was in front, and the browser's return started
+     * it anew (the launch intent comes through here as well). Kept on disk, as
+     * the process may be new too, until the sign-in page takes it. The return
+     * is then taken off the activity's intent: Capacitor hands the launch intent
+     * in again whenever the activity is created, and Android does as well when
+     * it rebuilds the task from the recent apps.
+     */
+    private void keepOrphanAuthReturn(Intent intent) {
+        Uri data = intent.getData();
+        if (data == null || !"auth".equals(data.getHost())) return;
+        if (!getContext().getString(R.string.custom_url_scheme).equals(data.getScheme())) return;
+        if (getActivity() != null && getActivity().getIntent() != null && getActivity().getIntent().getData() != null
+                && data.equals(getActivity().getIntent().getData())) {
+            getActivity().setIntent(new Intent(getActivity().getIntent()).setData(null));
+        }
+        if ((intent.getFlags() & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) != 0) return;
+        getContext().getSharedPreferences(AUTH_PREFS, Context.MODE_PRIVATE)
+            .edit()
+            .putString("url", data.toString())
+            .putLong("at", System.currentTimeMillis())
+            .commit();
+    }
+
+    /** The kept return of a sign-in (keepOrphanAuthReturn), once and while fresh; null otherwise. */
+    @PluginMethod
+    public void takeAuthCallback(PluginCall call) {
+        android.content.SharedPreferences prefs = getContext().getSharedPreferences(AUTH_PREFS, Context.MODE_PRIVATE);
+        String url = prefs.getString("url", null);
+        long at = prefs.getLong("at", 0);
+        prefs.edit().clear().commit();
+        boolean fresh = url != null && System.currentTimeMillis() - at <= ORPHAN_AUTH_TTL_MS;
+        JSObject result = new JSObject();
+        result.put("url", fresh ? url : JSONObject.NULL);
+        call.resolve(result);
+    }
+
     private PluginCall pendingAuthCall() {
         return authCallId == null ? null : getBridge().getSavedCall(authCallId);
     }
@@ -633,6 +733,12 @@ public class TrekShellPlugin extends Plugin {
         com.liketrek.trek.billing.TrekBilling.INSTANCE.restore(getContext(), call);
     }
 
+    /** Whether this Google account already holds a delivered cloud subscription. */
+    @PluginMethod
+    public void storeHeld(PluginCall call) {
+        com.liketrek.trek.billing.TrekBilling.INSTANCE.held(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) {

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

@@ -1,16 +1,20 @@
 package com.liketrek.trek;
 
 import android.net.Uri;
+import android.util.Log;
 import android.webkit.ClientCertRequest;
 import android.webkit.WebResourceError;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebResourceResponse;
 import android.webkit.WebView;
+import android.webkit.WebViewClient;
 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;
+import java.util.function.Consumer;
 
 /**
  * Used while the WebView shows the user's server. When that server cannot be
@@ -23,12 +27,32 @@ import java.util.Set;
 class TrekWebViewClient extends BridgeWebViewClient {
 
     private final Runnable onUnreachable;
+    /** Told whether the page now shown is a proxy's sign-in page, for the bar with the way out. */
+    private final Consumer<Boolean> onSignInPage;
+    /** Told whether the page now shown is an error page in place of the server's, for the same bar. */
+    private final Consumer<Boolean> onErrorPage;
+    /** The main-frame address that last came back as a 4xx page nobody else handled. */
+    private String errorPageUrl;
     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;
+    /** The page itself failed on the network once already; the next failure goes to the address screen. */
+    private boolean retriedMainFrame;
+    /** The page loaded again after a network error, until that load starts: its error page counts for nothing. */
+    private String retryUrl;
 
-    TrekWebViewClient(Bridge bridge, Runnable onUnreachable, Set<String> signInHosts) {
+    TrekWebViewClient(
+        Bridge bridge,
+        Runnable onUnreachable,
+        Consumer<Boolean> onSignInPage,
+        Consumer<Boolean> onErrorPage,
+        Set<String> signInHosts
+    ) {
         super(bridge);
         this.onUnreachable = onUnreachable;
-        this.signInHosts = signInHosts;
+        this.onSignInPage = onSignInPage;
+        this.onErrorPage = onErrorPage;
+        this.signInHosts = new HashSet<>(signInHosts);
     }
 
     /**
@@ -43,13 +67,42 @@ class TrekWebViewClient extends BridgeWebViewClient {
     @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);
     }
 
+    /** Every page the main frame shows, pushState included: is it a proxy's sign-in page? */
+    @Override
+    public void doUpdateVisitedHistory(WebView view, String url, boolean isReload) {
+        super.doUpdateVisitedHistory(view, url, isReload);
+        if (retryUrl != null) return;
+        onSignInPage.accept(url != null && isSignInHost(Uri.parse(url)));
+        // The 4xx answer arrives before this commit or after it; either way the
+        // flag is read once here, so the next page clears the bar again.
+        boolean error = url != null && url.equals(errorPageUrl);
+        errorPageUrl = null;
+        onErrorPage.accept(error);
+    }
+
     /** 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);
+        // The error page of a load that is about to be retried: not the server's
+        // first page, so no welcome page and no learning of sign-in hosts yet.
+        if (retryUrl != null) return;
+        if (SignInRedirect.onServer(TrekServerStore.getUrl(view.getContext()), url)) serverShown = true;
         String welcome = TrekServerStore.takeWelcomeUrl(view.getContext());
         if (welcome != null) view.loadUrl(welcome);
     }
@@ -90,13 +143,35 @@ class TrekWebViewClient extends BridgeWebViewClient {
         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);
+            com.liketrek.trek.clientcert.ClientCertWatch.serverAsked(view.getContext(), server, () -> {
+                TrekServerStore.setFailure(view.getContext(), "client certificate requested");
+                onUnreachable.run();
+            });
         }
     }
 
+    /**
+     * A page that failed on the network is loaded once more before the app says
+     * the server is unreachable. Started from the background, as when the
+     * browser hands a sign-in back to an app Android had ended, a Samsung phone
+     * may hold its network back for a moment, and the first load fails with the
+     * server there all along. The error is logged, as a report has nothing else.
+     */
     @Override
     public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
         if (request.isForMainFrame()) {
+            Log.w("TrekShell", "Page failed: " + error.getErrorCode() + " " + error.getDescription());
+            if (!retriedMainFrame && isNetworkError(error.getErrorCode())) {
+                retriedMainFrame = true;
+                retryUrl = request.getUrl().toString();
+                view.postDelayed(() -> {
+                    String url = retryUrl;
+                    retryUrl = null;
+                    view.loadUrl(url);
+                }, 1500);
+                return;
+            }
+            TrekServerStore.setFailure(view.getContext(), error.getDescription() + " (" + error.getErrorCode() + ")");
             onUnreachable.run();
             return;
         }
@@ -105,10 +180,12 @@ 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. 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.
+     * 503 while TREK restarts). A 4xx page is not TREK's, which serves its UI for
+     * every path: a proxy that asked this page for a client certificate and got
+     * none, as Cloudflare does with a 403, sends the app to the address screen,
+     * which says so and offers to add one. Any other 4xx page (a proxy's block
+     * page, a certificate it refused) stays up with the bar and its way out, so
+     * the app is never stuck on a page without TREK's UI.
      */
     @Override
     public void onReceivedHttpError(WebView view, WebResourceRequest request, WebResourceResponse errorResponse) {
@@ -116,10 +193,22 @@ class TrekWebViewClient extends BridgeWebViewClient {
         if (!request.isForMainFrame()) {
             super.onReceivedHttpError(view, request, errorResponse);
         } else if (status >= 500 || (status >= 400 && wantedCertificate(request.getUrl()))) {
+            TrekServerStore.setFailure(view.getContext(), "HTTP " + status);
             onUnreachable.run();
+        } else if (status >= 400) {
+            errorPageUrl = request.getUrl().toString();
+            onErrorPage.accept(true);
         }
     }
 
+    private static boolean isNetworkError(int code) {
+        return code == WebViewClient.ERROR_HOST_LOOKUP
+            || code == WebViewClient.ERROR_CONNECT
+            || code == WebViewClient.ERROR_TIMEOUT
+            || code == WebViewClient.ERROR_IO
+            || code == WebViewClient.ERROR_UNKNOWN;
+    }
+
     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

@@ -119,23 +119,38 @@ object TrekBilling {
         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)
-                    }
+            // One subscription per Google account: a second plan would run beside the first.
+            // A delivered one stops the purchase here; one that was paid but never set up is
+            // handed back as bought, so its instance is set up now.
+            val params = QueryPurchasesParams.newBuilder().setProductType(BillingClient.ProductType.SUBS).build()
+            client(activity).queryPurchasesAsync(params) { result, purchases ->
+                val held = if (result.responseCode == BillingClient.BillingResponseCode.OK) newest(purchases, PREFIX) else null
+                when {
+                    held == null -> launchPurchase(activity, call, id)
+                    held.isAcknowledged -> call.resolve(JSObject().put("kind", "subscribed"))
+                    else -> call.resolve(receipt(held).put("kind", "bought"))
+                }
+            }
+        }
+    }
+
+    private fun launchPurchase(activity: Activity, call: PluginCall, id: String) {
+        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)
                 }
             }
         }
@@ -208,6 +223,19 @@ object TrekBilling {
         }
     }
 
+    /** Whether this Google account holds a delivered subscription under `prefix`; while one runs, the shell offers no purchase. */
+    fun held(context: Context, call: PluginCall) {
+        val prefix = call.getString("prefix") ?: PREFIX
+        ready(context) { ok ->
+            if (!ok) return@ready call.resolve(JSObject().put("held", false))
+            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
+                call.resolve(JSObject().put("held", found?.isAcknowledged == true))
+            }
+        }
+    }
+
     /** The newest active subscription under `prefix` on this Google account, if any. */
     fun restore(context: Context, call: PluginCall) {
         val prefix = call.getString("prefix") ?: "cloud."

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

@@ -13,11 +13,33 @@ 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"))

client/iconChunk.js

@@ -0,0 +1,18 @@
+// The chunk group that holds the lucide icons the app loads at startup (vite.config.js).
+//
+// Every lucide icon is a module of its own, and the plugin icon lookup
+// (src/components/shared/PluginIcon.tsx) reaches all of them by name, from the navigation
+// every page renders. Left to itself the bundler puts each icon that some other chunk
+// also uses into a chunk of its own, so that neither side holds a copy: 187 files of a few
+// hundred bytes each, every one a request of its own on a first visit and an entry of its
+// own in the service worker's precache. In one group they are one file, whose hash changes
+// only when lucide-react does.
+//
+// `tags: ['$initial']` for the reason the other groups carry it: without it the group would
+// also take icons that today sit behind a lazy route and make them part of the first load.
+export const ICON_CHUNK = {
+  name: 'vendor-icons',
+  priority: 20,
+  tags: ['$initial'],
+  test: /[\\/]node_modules[\\/]lucide-react[\\/]/,
+};

client/ios/App/App/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>$(PRODUCT_NAME)</string>
+	<string>TREK</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>

client/ios/App/App/TrekBridgeViewController.swift

@@ -10,6 +10,7 @@ import WebKit
 class TrekBridgeViewController: CAPBridgeViewController {
     override func instanceDescriptor() -> InstanceDescriptor {
         let descriptor = super.instanceDescriptor()
+        TrekServerStore.recheckAfterUpdate()
         if let server = TrekServerStore.url {
             // The trailing slash matters: Capacitor treats every URL that starts
             // with this string as the app's own, and without it that would take
@@ -40,10 +41,13 @@ class TrekBridgeViewController: CAPBridgeViewController {
         // reachable" with a server that was there all along.
         if let webView, let inner = webView.navigationDelegate {
             let proxy = TrekNavigationProxy(inner: inner)
+            proxy.onErrorPage = { [weak self] error in self?.errorPageChanged(error) }
+            proxy.onPageShown = { [weak self] in self?.publishSafeArea(force: true) }
             navigationProxy = proxy
             webView.navigationDelegate = proxy
         }
         guardBridgeMessages()
+        watchSignInPages()
         bridge?.registerPluginInstance(TrekShellPlugin())
         // WebKit's own swipe back slides away a screenshot of the whole page,
         // closes no sheet and takes every drag near the edge from the UI. The UI
@@ -53,6 +57,257 @@ class TrekBridgeViewController: CAPBridgeViewController {
         // A long press on a link would lift a preview of the page it points to,
         // which no native list does; the press means "drag" or nothing here.
         webView?.allowsLinkPreview = false
+        paintBehindWebView()
+    }
+
+    // MARK: - What shows where the web view does not reach
+
+    /// The UI reports its theme through StatusBar.setStyle (native/nativeApp.ts),
+    /// which lands here; the colour behind the web view follows it.
+    override func setNeedsStatusBarAppearanceUpdate() {
+        super.setNeedsStatusBarAppearanceUpdate()
+        paintBehindWebView()
+    }
+
+    /// Some iOS releases (27.0.x) lay the web view out below the status bar
+    /// instead of under it, and the strip above the page then showed this
+    /// view's black. It now carries the top colour of the screen background
+    /// (mobile.css --m-scr), so the strip reads as part of the page on every
+    /// release, and the rubber band at the ends shows the same colour.
+    private func paintBehindWebView() {
+        let dark: Bool
+        switch preferredStatusBarStyle {
+        case .lightContent: dark = true
+        case .darkContent: dark = false
+        default: dark = traitCollection.userInterfaceStyle == .dark
+        }
+        let color = dark
+            ? UIColor(red: 0x17 / 255, green: 0x17 / 255, blue: 0x1C / 255, alpha: 1)
+            : UIColor(red: 0xFB / 255, green: 0xFA / 255, blue: 0xF7 / 255, alpha: 1)
+        view.backgroundColor = color
+        webView?.scrollView.backgroundColor = color
+        webView?.underPageBackgroundColor = color
+    }
+
+    // MARK: - The safe area the page keeps clear of
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        publishSafeArea()
+    }
+
+    override func viewSafeAreaInsetsDidChange() {
+        super.viewSafeAreaInsetsDidChange()
+        publishSafeArea()
+    }
+
+    private var publishedSafeArea: UIEdgeInsets?
+
+    /// WebKit's env(safe-area-inset-*) is the window's safe area only where the
+    /// web view overlaps it. Where a release lays the web view out below the
+    /// status bar it reports 0, yet a camera in a corner can still reach into
+    /// the page. The part of the window's safe area (and of the status bar) that
+    /// falls inside the web view goes to the page as --trek-native-safe-*, which
+    /// mobile.css takes as a floor under env(), never in its place.
+    func publishSafeArea(force: Bool = false) {
+        guard let webView, let window = view.window else { return }
+        let frame = webView.convert(webView.bounds, to: window)
+        let safe = window.safeAreaInsets
+        let statusBar = window.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
+        let insets = UIEdgeInsets(
+            top: max(0, max(safe.top, statusBar) - frame.minY),
+            left: max(0, safe.left - frame.minX),
+            bottom: max(0, safe.bottom - (window.bounds.maxY - frame.maxY)),
+            right: max(0, safe.right - (window.bounds.maxX - frame.maxX))
+        )
+        if !force, insets == publishedSafeArea { return }
+        publishedSafeArea = insets
+        let px = { (v: CGFloat) in "'\(Int(v.rounded(.up)))px'" }
+        let js = "(function(s){"
+            + "s.setProperty('--trek-native-safe-top',\(px(insets.top)));"
+            + "s.setProperty('--trek-native-safe-left',\(px(insets.left)));"
+            + "s.setProperty('--trek-native-safe-right',\(px(insets.right)));"
+            + "s.setProperty('--trek-native-safe-bottom',\(px(insets.bottom)));"
+            + "})(document.documentElement.style)"
+        webView.evaluateJavaScript(js, completionHandler: nil)
+    }
+
+    // MARK: - A proxy's sign-in page
+
+    /// Over a proxy's sign-in page (Pangolin, authentik, ...) the server's UI is
+    /// not there, so nothing else leads back to the address screen, and a passkey
+    /// cannot work in a web view for a domain the app is not tied to. A bar says
+    /// so and offers to change the server; the keyboard gets room on that page,
+    /// which TREK's own script makes everywhere else (native/keepFieldInView.ts).
+    private var signInBar: UIView?
+    private var urlObservation: NSKeyValueObservation?
+    private var insetObservation: NSKeyValueObservation?
+    private var onSignInPage = false
+    /// Whether the main frame shows an error page in place of the server's (a 4xx
+    /// nobody else handled: a proxy's block page, a client certificate it refused).
+    private var onErrorPage = false
+    private var signInHint: UILabel?
+    private var keyboardUp = false
+    /// How far the keyboard reaches into the view while it is up.
+    private var keyboardRoom: CGFloat = 0
+    /// Whether the bottom inset is this controller's, so leaving the page puts it back.
+    private var ownsInset = false
+    private var bodyReset: DispatchWorkItem?
+
+    private func watchSignInPages() {
+        urlObservation = webView?.observe(\.url, options: [.initial, .new]) { [weak self] webView, _ in
+            let signIn = TrekServerStore.isSignInHost(webView.url)
+            DispatchQueue.main.async { self?.signInPageChanged(signIn) }
+        }
+        // The keyboard plugin zeroes the scroll inset on every frame change it
+        // makes, the last one a while after the keyboard is up. On a sign-in
+        // page the inset wanted here is put back each time.
+        insetObservation = webView?.scrollView.observe(\.contentInset, options: [.new]) { [weak self] _, _ in
+            DispatchQueue.main.async { self?.applyInset() }
+        }
+        let center = NotificationCenter.default
+        center.addObserver(self, selector: #selector(keyboardWillShow(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
+        center.addObserver(self, selector: #selector(keyboardWillHide), name: UIResponder.keyboardWillHideNotification, object: nil)
+    }
+
+    private func signInPageChanged(_ signIn: Bool) {
+        onSignInPage = signIn
+        if signIn && signInBar == nil { signInBar = makeSignInBar() }
+        updateSignInBar()
+    }
+
+    private func errorPageChanged(_ error: Bool) {
+        onErrorPage = error
+        if error && signInBar == nil { signInBar = makeSignInBar() }
+        updateSignInBar()
+    }
+
+    /// Out of the way while the keyboard is up: the form needs the room.
+    private func updateSignInBar() {
+        let labels = TrekServerStore.labels
+        signInHint?.text = onSignInPage
+            ? labels["signInHint"]
+                ?? "Passkeys and security keys do not work on this page in the app. Sign in with a password, or let the app through your proxy."
+            : labels["errorPageHint"] ?? "This page is not from TREK: the server or a proxy in front of it refused the app. Check your proxy or certificate, or change the server."
+        signInBar?.isHidden = !((onSignInPage || onErrorPage) && !keyboardUp)
+        applyInset()
+    }
+
+    /// On a sign-in page the page can scroll past what covers its end: the
+    /// keyboard while it is up, the bar otherwise. TREK's own pages are left alone.
+    private func applyInset() {
+        guard let scrollView = webView?.scrollView else { return }
+        let wanted: CGFloat
+        if onSignInPage || onErrorPage {
+            if keyboardUp {
+                wanted = keyboardRoom
+            } else if let bar = signInBar {
+                view.layoutIfNeeded()
+                wanted = max(0, view.bounds.height - bar.frame.minY)
+            } else {
+                wanted = 0
+            }
+            ownsInset = true
+        } else if ownsInset {
+            wanted = 0
+            ownsInset = false
+        } else {
+            return
+        }
+        if scrollView.contentInset.bottom != wanted { scrollView.contentInset.bottom = wanted }
+        if scrollView.verticalScrollIndicatorInsets.bottom != wanted { scrollView.verticalScrollIndicatorInsets.bottom = wanted }
+    }
+
+    /// The keyboard plugin also sizes the body to the area above the keyboard,
+    /// after the keyboard's animation and a further 0.2 s. On a sign-in page the
+    /// body gets its height back once that has run, so the button under the
+    /// keyboard can be scrolled into view through the inset above.
+    @objc private func keyboardWillShow(_ note: Notification) {
+        keyboardUp = true
+        if let frame = note.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect {
+            keyboardRoom = max(0, view.bounds.height - view.convert(frame, from: nil).minY)
+        }
+        bodyReset?.cancel()
+        if onSignInPage {
+            let duration = note.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? Double ?? 0.25
+            let reset = DispatchWorkItem { [weak self] in
+                guard let self, self.onSignInPage, self.keyboardUp, let webView = self.webView else { return }
+                webView.evaluateJavaScript("document.body.style.height = ''", completionHandler: nil)
+                self.applyInset()
+            }
+            bodyReset = reset
+            DispatchQueue.main.asyncAfter(deadline: .now() + duration + 0.35, execute: reset)
+        }
+        updateSignInBar()
+    }
+
+    @objc private func keyboardWillHide() {
+        keyboardUp = false
+        bodyReset?.cancel()
+        updateSignInBar()
+    }
+
+    private func makeSignInBar() -> UIView {
+        let labels = TrekServerStore.labels
+        // The look of the app's own first screens: a white card with a sand edge,
+        // warm grey text and a dark button, over whatever page the proxy shows.
+        let bar = UIView()
+        bar.backgroundColor = UIColor(white: 1, alpha: 0.97)
+        bar.layer.cornerRadius = 18
+        bar.layer.cornerCurve = .continuous
+        bar.layer.borderWidth = 1
+        bar.layer.borderColor = UIColor(red: 0xEF / 255, green: 0xE4 / 255, blue: 0xD8 / 255, alpha: 1).cgColor
+        bar.layer.shadowColor = UIColor(red: 0x1F / 255, green: 0x1A / 255, blue: 0x17 / 255, alpha: 1).cgColor
+        bar.layer.shadowOpacity = 0.18
+        bar.layer.shadowRadius = 18
+        bar.layer.shadowOffset = CGSize(width: 0, height: 10)
+        bar.translatesAutoresizingMaskIntoConstraints = false
+
+        let hint = UILabel()
+        hint.text = labels["signInHint"]
+            ?? "Passkeys and security keys do not work on this page in the app. Sign in with a password, or let the app through your proxy."
+        hint.textColor = UIColor(red: 0x6B / 255, green: 0x5F / 255, blue: 0x57 / 255, alpha: 1)
+        hint.font = .preferredFont(forTextStyle: .footnote)
+        hint.adjustsFontForContentSizeCategory = true
+        hint.numberOfLines = 0
+        signInHint = hint
+        hint.translatesAutoresizingMaskIntoConstraints = false
+
+        var look = UIButton.Configuration.filled()
+        look.baseBackgroundColor = UIColor(red: 0x11 / 255, green: 0x18 / 255, blue: 0x27 / 255, alpha: 1)
+        look.baseForegroundColor = .white
+        look.cornerStyle = .fixed
+        look.background.cornerRadius = 12
+        look.contentInsets = NSDirectionalEdgeInsets(top: 9, leading: 14, bottom: 9, trailing: 14)
+        let change = UIButton(configuration: look)
+        change.setTitle(labels["changeServer"] ?? "Change server", for: .normal)
+        change.titleLabel?.font = .systemFont(ofSize: 15, weight: .semibold)
+        change.addTarget(self, action: #selector(changeServerFromSignIn), for: .touchUpInside)
+        change.translatesAutoresizingMaskIntoConstraints = false
+        change.setContentHuggingPriority(.required, for: .horizontal)
+        change.setContentCompressionResistancePriority(.required, for: .horizontal)
+
+        bar.addSubview(hint)
+        bar.addSubview(change)
+        view.addSubview(bar)
+        NSLayoutConstraint.activate([
+            bar.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: 12),
+            bar.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: -12),
+            bar.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: -8),
+            hint.leadingAnchor.constraint(equalTo: bar.leadingAnchor, constant: 14),
+            hint.topAnchor.constraint(equalTo: bar.topAnchor, constant: 10),
+            hint.bottomAnchor.constraint(equalTo: bar.bottomAnchor, constant: -10),
+            change.leadingAnchor.constraint(equalTo: hint.trailingAnchor, constant: 8),
+            change.trailingAnchor.constraint(equalTo: bar.trailingAnchor, constant: -12),
+            change.centerYAnchor.constraint(equalTo: bar.centerYAnchor),
+        ])
+        return bar
+    }
+
+    /// What resetServer does from the UI: forget the server, back to the address screen.
+    @objc private func changeServerFromSignIn() {
+        TrekServerStore.url = nil
+        view.window?.rootViewController = TrekBridgeViewController()
     }
 
     /// Kept alive here: the content controller holds it, but only for as long as it is registered.
@@ -60,10 +315,10 @@ class TrekBridgeViewController: CAPBridgeViewController {
 
     /// Capacitor answers bridge messages from any page in the web view. With a
     /// proxy's sign-in page loading there, its messages are dropped before they
-    /// reach the plugins.
+    /// reach the plugins. Always in place: a sign-in host can also be learned
+    /// while the app runs (TrekSignInRedirect).
     private func guardBridgeMessages() {
-        guard !TrekServerStore.signInHosts.isEmpty,
-              let handler = (bridge as? CapacitorBridge)?.webViewDelegationHandler,
+        guard let handler = (bridge as? CapacitorBridge)?.webViewDelegationHandler,
               let controller = webView?.configuration.userContentController else { return }
         let guarded = TrekBridgeMessageGuard(inner: handler)
         controller.removeScriptMessageHandler(forName: TrekBridgeMessageGuard.name)
@@ -157,13 +412,70 @@ enum TrekKeyCommands {
 enum TrekServerStore {
     private static let key = "TrekServerURL"
 
+    private static let failureKey = "TrekLastFailure"
+
+    /// Why the server's page did not load ("NSURLErrorDomain -1003"): the
+    /// address screen shows it small under its message, so a report carries
+    /// the cause. Taken once.
+    static func noteFailure(_ error: Error) {
+        let ns = error as NSError
+        UserDefaults.standard.set("\(ns.domain) \(ns.code)", forKey: failureKey)
+    }
+
+    static func takeFailure() -> String? {
+        let failure = UserDefaults.standard.string(forKey: failureKey)
+        UserDefaults.standard.removeObject(forKey: failureKey)
+        return failure
+    }
+
+    private static let previousKey = "TrekPreviousServerURL"
+
+    private static let checkedKey = "TrekServerCheck"
+
+    private static let labelsKey = "TrekShellLabels"
+
+    /// The words of the bar over a proxy's sign-in page, in the user's language,
+    /// as the address screen passed them (setServer's `labels`): the server's UI
+    /// is not there to say them. Empty keeps the English fallback.
+    static var labels: [String: String] {
+        get { UserDefaults.standard.dictionary(forKey: labelsKey) as? [String: String] ?? [:] }
+        set { UserDefaults.standard.set(newValue, forKey: labelsKey) }
+    }
+
+    /// The server API this build needs (MIN_NATIVE_API in serverAddress.ts).
+    /// A server remembered under a lower value is checked once more: the first
+    /// launch after an update that raised it puts the address screen back up,
+    /// filled in with that server (previousURL). Raise both together.
+    private static let serverCheck = 3
+
+    /// Runs before the first bridge is built, so a server picked under an older
+    /// minimum is not loaded unchecked.
+    static func recheckAfterUpdate() {
+        let defaults = UserDefaults.standard
+        guard defaults.integer(forKey: checkedKey) < serverCheck else { return }
+        defaults.set(serverCheck, forKey: checkedKey)
+        guard let server = url else { return }
+        url = nil
+        defaults.set(server, forKey: previousKey)
+    }
+
+    /// The server an update asked to check again, until a server is set.
+    static var previousURL: String? {
+        UserDefaults.standard.string(forKey: previousKey)
+    }
+
     private static let signInHostsKey = "TrekServerSignInHosts"
 
     /// Setting the server drops the sign-in hosts of the one before it.
     static var url: String? {
         get { UserDefaults.standard.string(forKey: key) }
         set {
-            if let newValue { UserDefaults.standard.set(newValue, forKey: key) } else { UserDefaults.standard.removeObject(forKey: key) }
+            if let newValue {
+                UserDefaults.standard.set(newValue, forKey: key)
+                UserDefaults.standard.removeObject(forKey: previousKey)
+            } else {
+                UserDefaults.standard.removeObject(forKey: key)
+            }
             UserDefaults.standard.removeObject(forKey: signInHostsKey)
             try? FileManager.default.removeItem(at: offlineCopyURL)
         }
@@ -185,6 +497,13 @@ enum TrekServerStore {
         }
     }
 
+    /// Keeps one more sign-in host for the remembered server, as the web view met it (TrekSignInRedirect).
+    static func addSignInHost(_ host: String) {
+        var hosts = signInHosts
+        guard hosts.insert(host.lowercased()).inserted else { return }
+        signInHosts = hosts
+    }
+
     /// Whether `url` is one of the sign-in hosts, matched on host or host:port.
     static func isSignInHost(_ url: URL?) -> Bool {
         guard let url, ["https", "http"].contains(url.scheme?.lowercased() ?? ""), let host = url.host?.lowercased() else { return false }
@@ -428,12 +747,48 @@ final class TrekTileSchemeHandler: NSObject, WKURLSchemeHandler {
     }
 }
 
+/// 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
+/// Safari, 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 taps is no redirect, and once a page of the server has
+/// shown, nothing is learned any more.
+enum TrekSignInRedirect {
+    /// The host (host:port with an explicit port) to keep as a sign-in host, or nil.
+    static func learnedHost(server: String?, target: URL?, mainFrame: Bool, redirect: Bool, serverShown: Bool) -> String? {
+        guard mainFrame, redirect, !serverShown,
+              let server, let from = URL(string: server), let fromHost = from.host?.lowercased(),
+              let target, let toHost = target.host?.lowercased(),
+              let toScheme = target.scheme?.lowercased(), ["https", "http"].contains(toScheme) else { return nil }
+        // Never from https down to plain http: the sign-in would send a password in the clear.
+        if from.scheme?.lowercased() == "https", toScheme != "https" { return nil }
+        guard toHost != fromHost else { return nil }
+        if let port = target.port { return "\(toHost):\(port)" }
+        return toHost
+    }
+
+    /// Whether `url` is on the server's host, where the app's own pages come from.
+    static func onServer(server: String?, url: URL?) -> Bool {
+        guard let server, let host = URL(string: server)?.host?.lowercased() else { return false }
+        return url?.host?.lowercased() == host
+    }
+}
+
 /// Stands in front of Capacitor's navigation delegate and hands it everything
 /// but the failures of a navigation that another one replaced: a cancelled
 /// load (NSURLErrorCancelled) or an interrupted frame load (WebKit 102). Those
 /// are no fault, and Capacitor would answer them with its error page.
 final class TrekNavigationProxy: NSObject, WKNavigationDelegate {
     private let inner: WKNavigationDelegate
+    /// A page of the server has shown since launch; from then on no sign-in host is learned (TrekSignInRedirect).
+    private var serverShown = false
+    /// Told on the main thread whether the main frame now shows an error page in place of the server's.
+    var onErrorPage: ((Bool) -> Void)?
+    /// Told when a page has finished loading: a new document starts without the safe area the controller handed the last one.
+    var onPageShown: (() -> Void)?
 
     init(inner: WKNavigationDelegate) {
         self.inner = inner
@@ -462,6 +817,18 @@ final class TrekNavigationProxy: NSObject, WKNavigationDelegate {
             decisionHandler(.allow)
             return
         }
+        // WebKit asks again for every server redirect, as a navigation of type .other.
+        if let host = TrekSignInRedirect.learnedHost(
+            server: TrekServerStore.url,
+            target: navigationAction.request.url,
+            mainFrame: navigationAction.targetFrame?.isMainFrame == true,
+            redirect: navigationAction.navigationType == .other,
+            serverShown: serverShown
+        ) {
+            TrekServerStore.addSignInHost(host)
+            decisionHandler(.allow)
+            return
+        }
         let selector = NSSelectorFromString("webView:decidePolicyForNavigationAction:decisionHandler:")
         guard (inner as AnyObject).responds(to: selector) else {
             decisionHandler(.allow)
@@ -474,6 +841,12 @@ final class TrekNavigationProxy: NSObject, WKNavigationDelegate {
     /// page once (TrekServerStore.takeWelcomeURL); it is on the server's origin.
     func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
         inner.webView?(webView, didFinish: navigation)
+        onPageShown?()
+        if TrekSignInRedirect.onServer(server: TrekServerStore.url, url: webView.url) {
+            serverShown = true
+            // The server's page is up: an earlier failure is no cause any more.
+            _ = TrekServerStore.takeFailure()
+        }
         if let welcome = TrekServerStore.takeWelcomeURL() {
             webView.load(URLRequest(url: welcome))
         }
@@ -489,6 +862,7 @@ final class TrekNavigationProxy: NSObject, WKNavigationDelegate {
             TrekClientCertWatch.serverAsked(host: space.host, port: space.port) { [weak self, weak webView] in
                 guard let self, let webView else { return }
                 // Capacitor's own answer to a failed load: the address screen (errorPath).
+                TrekServerStore.noteFailure(URLError(.clientCertificateRejected))
                 self.inner.webView?(webView, didFailProvisionalNavigation: nil, withError: URLError(.clientCertificateRejected))
             }
             return
@@ -504,16 +878,23 @@ final class TrekNavigationProxy: NSObject, WKNavigationDelegate {
     /// A proxy that asked the page for a client certificate, got none and
     /// answered with its own refusal (Cloudflare's 403, nginx's 400) sends the
     /// app to the address screen, which says so and offers to add one, rather
-    /// than leaving the proxy's error page up.
+    /// than leaving the proxy's error page up. Any other 4xx page is not TREK's,
+    /// which serves its UI for every path (a proxy's block page, a certificate it
+    /// refused): it stays up with the bar and its way out to another server.
     func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse,
                  decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void) {
         if navigationResponse.isForMainFrame, let http = navigationResponse.response as? HTTPURLResponse,
            http.statusCode >= 400, http.statusCode < 500, let asked = TrekClientIdentity.lastRequest, !asked.served,
            let url = http.url, url.host?.lowercased() == asked.host, (url.port ?? 443) == asked.port {
             decisionHandler(.cancel)
+            TrekServerStore.noteFailure(URLError(.clientCertificateRequired))
             inner.webView?(webView, didFailProvisionalNavigation: nil, withError: URLError(.clientCertificateRequired))
             return
         }
+        if navigationResponse.isForMainFrame, let http = navigationResponse.response as? HTTPURLResponse {
+            let error = http.statusCode >= 400 && http.statusCode < 500
+            DispatchQueue.main.async { [weak self] in self?.onErrorPage?(error) }
+        }
         let selector = NSSelectorFromString("webView:decidePolicyForNavigationResponse:decisionHandler:")
         guard (inner as AnyObject).responds(to: selector) else {
             decisionHandler(.allow)
@@ -524,11 +905,13 @@ final class TrekNavigationProxy: NSObject, WKNavigationDelegate {
 
     func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
         if Self.isReplaced(error) { return }
+        TrekServerStore.noteFailure(error)
         inner.webView?(webView, didFail: navigation, withError: error)
     }
 
     func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
         if Self.isReplaced(error) { return }
+        TrekServerStore.noteFailure(error)
         inner.webView?(webView, didFailProvisionalNavigation: navigation, withError: error)
     }
 }

client/ios/App/App/TrekShellPlugin.swift

@@ -11,6 +11,7 @@ import ActivityKit
 #endif
 import LocalAuthentication
 import PassKit
+import QuickLook
 import UIKit
 import WebKit
 
@@ -45,6 +46,7 @@ public class TrekShellPlugin: CAPPlugin, CAPBridgedPlugin, ASWebAuthenticationPr
         CAPPluginMethod(name: "storePurchase", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "storeFinish", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "storeRestore", returnType: CAPPluginReturnPromise),
+        CAPPluginMethod(name: "storeHeld", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "addToWallet", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "setWatchSnapshot", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "takeWatchActions", returnType: CAPPluginReturnPromise),
@@ -55,6 +57,7 @@ public class TrekShellPlugin: CAPPlugin, CAPBridgedPlugin, ASWebAuthenticationPr
         CAPPluginMethod(name: "clientCertificate", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "importClientCertificate", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "removeClientCertificate", returnType: CAPPluginReturnPromise),
+        CAPPluginMethod(name: "previewFile", returnType: CAPPluginReturnPromise),
     ]
 
     /// What this binary offers the server's UI, raised with every native feature
@@ -66,7 +69,7 @@ public class TrekShellPlugin: CAPPlugin, CAPBridgedPlugin, ASWebAuthenticationPr
     /// builds a snapshot for nothing; "wallet" only where Wallet can take a pass (an
     /// iPhone: an iPad has no Wallet app), so the UI offers no button that does nothing.
     static var features: [String] {
-        var names = ["capabilities", "edgeBack", "tileCache", "biometricLock", "geolocation", "sharedFiles", "nativePush", "widgets", "liveActivity", "widgetTrips", "storeKit", "shareSheet", "keyCommands", "quickActions", "clientCertificate"]
+        var names = ["capabilities", "edgeBack", "tileCache", "biometricLock", "geolocation", "sharedFiles", "nativePush", "widgets", "liveActivity", "widgetTrips", "storeKit", "shareSheet", "keyCommands", "quickActions", "clientCertificate", "filePreview"]
         if canAddWalletPasses { names.append("wallet") }
         if TrekWatchLink.isAvailable { names.append("watch") }
         return names
@@ -346,7 +349,11 @@ public class TrekShellPlugin: CAPPlugin, CAPBridgedPlugin, ASWebAuthenticationPr
     private var authSession: ASWebAuthenticationSession?
 
     @objc func getServer(_ call: CAPPluginCall) {
-        call.resolve(["url": TrekServerStore.url ?? NSNull()])
+        call.resolve([
+            "url": TrekServerStore.url ?? NSNull(),
+            "previousUrl": TrekServerStore.previousURL ?? NSNull(),
+            "failure": TrekServerStore.takeFailure() ?? NSNull(),
+        ])
     }
 
     @objc func setServer(_ call: CAPPluginCall) {
@@ -355,6 +362,8 @@ public class TrekShellPlugin: CAPPlugin, CAPBridgedPlugin, ASWebAuthenticationPr
             return
         }
         TrekServerStore.url = raw
+        let labels = (call.getObject("labels") ?? [:]).compactMapValues { $0 as? String }
+        if !labels.isEmpty { TrekServerStore.labels = labels }
         // After the URL: setting it clears the hosts of the server before.
         let hosts = (call.getArray("signInHosts", String.self) ?? []).filter { $0.range(of: "^[A-Za-z0-9.-]+(:[0-9]+)?$", options: .regularExpression) != nil }
         TrekServerStore.signInHosts = Set(hosts.map { $0.lowercased() })
@@ -555,6 +564,41 @@ extension TrekShellPlugin {
 
 /// Positions and errors for the UI, shaped like the Geolocation API's, with the
 /// When-In-Use permission asked the first time.
+// MARK: - Quick Look
+
+extension TrekShellPlugin {
+    /// Kept while Quick Look shows a file: the controller holds its data source weakly.
+    /// One preview at a time, so a static: an extension cannot store per instance.
+    private static var previewSource: TrekFilePreviewSource?
+
+    /// Shows a file the UI wrote to the cache in Quick Look: a PDF to page through,
+    /// an image, a document, with the system's own share button. "unsupported" for
+    /// a file Quick Look cannot show, which the UI then hands to the share sheet.
+    @objc func previewFile(_ call: CAPPluginCall) {
+        guard let path = call.getString("path"), let url = URL(string: path), url.isFileURL,
+              FileManager.default.fileExists(atPath: url.path) else {
+            call.reject("a file in the app's cache is required", "INVALID")
+            return
+        }
+        DispatchQueue.main.async { [weak self] in
+            guard let self, let presenter = self.bridge?.viewController else {
+                call.reject("nothing to show the preview from", "UNAVAILABLE")
+                return
+            }
+            guard QLPreviewController.canPreview(url as QLPreviewItem) else {
+                call.resolve(["result": "unsupported"])
+                return
+            }
+            let source = TrekFilePreviewSource(url: url, title: call.getString("title"))
+            TrekShellPlugin.previewSource = source
+            let preview = QLPreviewController()
+            preview.dataSource = source
+            presenter.present(preview, animated: true)
+            call.resolve(["result": "shown"])
+        }
+    }
+}
+
 // MARK: - Apple Wallet
 
 extension TrekShellPlugin {
@@ -637,6 +681,17 @@ extension TrekShellPlugin {
             return
         }
         Task {
+            // One subscription per Apple ID: another plan would change it, not add one.
+            // A held one that was delivered stops the purchase here. One that was paid
+            // but never set up is handed back as bought, so its instance is set up now.
+            if let held = await TrekStore.currentEntitlement(prefix: "cloud.") {
+                if await TrekStore.isUnfinished(held.id) {
+                    call.resolve(["kind": "bought", "jws": held.jws, "transactionId": String(held.id), "productId": held.productId])
+                } else {
+                    call.resolve(["kind": "subscribed"])
+                }
+                return
+            }
             do {
                 guard let product = try await Product.products(for: [id]).first else {
                     call.resolve(["kind": "failed"])
@@ -693,6 +748,21 @@ extension TrekShellPlugin {
             call.resolve(["jws": found.jws, "transactionId": String(found.id)])
         }
     }
+
+    /// Feature storeKit: whether this Apple ID holds a delivered subscription under
+    /// `prefix`. Read from the entitlements on the device, so no password is asked;
+    /// while one runs, the shell offers no purchase.
+    @objc func storeHeld(_ call: CAPPluginCall) {
+        let prefix = call.getString("prefix") ?? "cloud."
+        Task {
+            guard let held = await TrekStore.currentEntitlement(prefix: prefix) else {
+                call.resolve(["held": false])
+                return
+            }
+            let unfinished = await TrekStore.isUnfinished(held.id)
+            call.resolve(["held": !unfinished])
+        }
+    }
 }
 
 enum TrekStore {
@@ -723,17 +793,25 @@ enum TrekStore {
         }
     }
 
-    static func currentEntitlement(prefix: String) async -> (jws: String, id: UInt64)? {
-        var newest: (date: Date, jws: String, id: UInt64)?
+    static func currentEntitlement(prefix: String) async -> (jws: String, id: UInt64, productId: String)? {
+        var newest: (date: Date, jws: String, id: UInt64, productId: String)?
         for await result in Transaction.currentEntitlements {
             guard case .verified(let transaction) = result,
                   transaction.productID.hasPrefix(prefix),
                   transaction.revocationDate == nil else { continue }
             if newest == nil || transaction.purchaseDate > newest!.date {
-                newest = (transaction.purchaseDate, result.jwsRepresentation, transaction.id)
+                newest = (transaction.purchaseDate, result.jwsRepresentation, transaction.id, transaction.productID)
             }
         }
-        return newest.map { ($0.jws, $0.id) }
+        return newest.map { (jws: $0.jws, id: $0.id, productId: $0.productId) }
+    }
+
+    /// Paid but not delivered yet: the shell finishes a transaction once its instance exists.
+    static func isUnfinished(_ id: UInt64) async -> Bool {
+        for await result in Transaction.unfinished {
+            if case .verified(let transaction) = result, transaction.id == id { return true }
+        }
+        return false
     }
 }
 
@@ -957,3 +1035,26 @@ enum TrekSharedKeychain {
         return SecItemAdd(q as CFDictionary, nil) == errSecSuccess
     }
 }
+
+/// The one file Quick Look shows, under the name the user knows it by.
+final class TrekFilePreviewSource: NSObject, QLPreviewControllerDataSource {
+    private let item: Item
+
+    init(url: URL, title: String?) {
+        item = Item(url: url, title: title)
+    }
+
+    func numberOfPreviewItems(in controller: QLPreviewController) -> Int { 1 }
+
+    func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem { item }
+
+    final class Item: NSObject, QLPreviewItem {
+        let previewItemURL: URL?
+        let previewItemTitle: String?
+
+        init(url: URL, title: String?) {
+            previewItemURL = url
+            previewItemTitle = title
+        }
+    }
+}

client/native-shell/amount.ts

@@ -0,0 +1,43 @@
+/**
+ * The amount inside a price as the store writes it ("4,90 €", "$4.99",
+ * "CHF 12.90", "1.290 ₽"), and a way to write another amount the same way: the
+ * same currency, the same decimal mark, the same digit grouping. The plan picker
+ * counts a price up to its new value with it, and turns a yearly price into what
+ * it makes a month, without knowing the store's locale.
+ */
+interface Amount {
+  /** The amount as a number, in the price's own unit (4.9 for "4,90 €"). */
+  value: number;
+  /** The price written for another amount, in the same format. */
+  render(value: number): string;
+}
+
+// Digits with the marks stores put between them: . , any space (\s takes the
+// no-break ones too) and the apostrophes Swiss formats group thousands with.
+const NUMBER = /\d[\d.,\s'’]*\d|\d/;
+
+export function amountIn(label: string): Amount | null {
+  const match = NUMBER.exec(label);
+  if (!match) return null;
+  const raw = match[0];
+  // The decimal mark is the last . or , followed by one or two digits to the end.
+  const decimal = /([.,])(\d{1,2})$/.exec(raw);
+  const decimals = decimal ? decimal[2].length : 0;
+  const mark = decimal ? decimal[1] : '';
+  const whole = decimal ? raw.slice(0, raw.length - decimal[0].length) : raw;
+  const group = /[.,\s'’]/.exec(whole)?.[0] ?? '';
+  const digits = whole.replace(/\D/g, '') + (decimal ? `.${decimal[2]}` : '');
+  const value = Number(digits);
+  if (!Number.isFinite(value)) return null;
+  const before = label.slice(0, match.index);
+  const after = label.slice(match.index + raw.length);
+  return {
+    value,
+    render(next: number) {
+      const fixed = Math.max(0, next).toFixed(decimals);
+      const [int, frac] = fixed.split('.');
+      const grouped = group ? int.replace(/\B(?=(\d{3})+(?!\d))/g, group) : int;
+      return `${before}${grouped}${frac !== undefined ? mark + frac : ''}${after}`;
+    },
+  };
+}

client/native-shell/index.html

@@ -3,8 +3,8 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, viewport-fit=cover" />
-    <meta name="color-scheme" content="dark light" />
-    <meta name="theme-color" content="#09090b" />
+    <meta name="color-scheme" content="light" />
+    <meta name="theme-color" content="#fffaf5" />
     <title>TREK</title>
   </head>
   <body>

client/native-shell/scenery.ts

@@ -0,0 +1,585 @@
+/**
+ * The landscape behind the first screens of the app: one world seen from above,
+ * an island out at sea, the coast with its town, the farmland behind it and the
+ * mountains at the back. A fragment shader draws it every frame (water, surf,
+ * boats, a car on the road), so it is never a photo and never the same twice.
+ *
+ * The plan picker moves the camera through that world, one place per plan, so
+ * choosing reads as travelling further inland. The scenes are framed for a phone
+ * 390 px wide: a wider or taller box (iPad, an unfolded phone) shows more of the
+ * world around the same centre.
+ *
+ * Kept light for the phone it runs on: the device pixel ratio is capped at 2,
+ * the picture drops to a lower resolution when frames come slow, the loop stops
+ * while the app is in the background or the canvas has left the page, and with
+ * reduced motion it is one still frame. Without WebGL the box keeps its plain
+ * sea colour from the stylesheet.
+ */
+
+/** Where the camera stands for a place, in world pixels, for a 390 px frame. */
+export type Camera = readonly [number, number];
+export const WELCOME_CAMERA: Camera = [0, 0];
+/** One place per plan, in the order the plans come: island, coast, farmland, mountains. */
+const PLAN_CAMERAS: readonly Camera[] = [
+  [62, -392],
+  [0, 24],
+  [60, 290],
+  [70, 660],
+];
+export function cameraForPlan(index: number): Camera {
+  return PLAN_CAMERAS[Math.max(0, Math.min(PLAN_CAMERAS.length - 1, index))];
+}
+
+const FRAME_WIDTH = 390;
+
+const FRAGMENT = `
+  precision highp float;
+  uniform vec2 uRes; uniform float uDpr; uniform float uT; uniform vec2 uCam; uniform float uHaze;
+  float coast(float x) { return 128.0 + 12.0 * sin(x * 0.018 + 0.6) + 7.0 * sin(x * 0.051 + 2.1) + 4.0 * sin(x * 0.11); }
+  float riverX(float y) { return 168.0 - (y - 120.0) * 0.30 + 9.0 * sin(y * 0.035 + 0.8) + 4.0 * sin(y * 0.09); }
+  float hash(vec2 p) { return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453); }
+  vec2 hash2(vec2 p) { return fract(sin(vec2(dot(p, vec2(127.1, 311.7)), dot(p, vec2(269.5, 183.3)))) * 43758.5453); }
+  float noise(vec2 p) { vec2 i = floor(p), f = fract(p); vec2 u = f * f * (3.0 - 2.0 * f);
+    return mix(mix(hash(i), hash(i + vec2(1, 0)), u.x), mix(hash(i + vec2(0, 1)), hash(i + vec2(1, 1)), u.x), u.y); }
+  float fbm(vec2 p) { float v = 0.0, a = 0.5; for (int i = 0; i < 5; i++) { v += a * noise(p); p = p * 2.03 + vec2(1.7, 9.2); a *= 0.5; } return v; }
+  float fbm3(vec2 p) { float v = 0.0, a = 0.5; for (int i = 0; i < 3; i++) { v += a * noise(p); p = p * 2.03 + vec2(1.7, 9.2); a *= 0.5; } return v; }
+  float wave(vec2 p, float t) {
+    return 0.55 * sin(dot(p, vec2(0.040, 0.085)) - t * 1.10) + 0.35 * sin(dot(p, vec2(-0.070, 0.050)) - t * 1.45)
+         + 0.22 * sin(dot(p, vec2(0.110, 0.130)) - t * 2.10) + 0.12 * sin(dot(p, vec2(-0.170, 0.190)) - t * 2.90)
+         + 0.90 * fbm(p * 0.055 + vec2(t * 0.18, t * 0.32));
+  }
+  float ridged(vec2 p) { float v = 0.0, a = 0.5; for (int i = 0; i < 5; i++) { float n = 1.0 - abs(noise(p) * 2.0 - 1.0); v += a * n * n; p = p * 2.07 + vec2(3.1, 1.7); a *= 0.5; } return v; }
+  /* Height: gentle near the shore, sharp ridges further inland. */
+  float peaks(vec2 p) { float v = 0.0, a = 0.55; for (int i = 0; i < 7; i++) { v += a * (1.0 - abs(noise(p) * 2.0 - 1.0)); p = p * 2.13 + vec2(1.3, 4.7); a *= 0.5; } return v; }
+  float ground(vec2 p) {
+    float inland = smoothstep(10.0, 170.0, p.y - coast(p.x));
+    return fbm(p * 0.011) * 0.4 + ridged(p * 0.014 + 5.0) * 1.15 * inland + fbm3(p * 0.06) * 0.08;
+  }
+  /* The island out at sea: signed distance to its shore in px (> 0 on land),
+     a round main body with an uneven coast and a headland to the east. */
+  float islD(vec2 p) {
+    vec2 q = (p - vec2(230.0, -250.0)) / vec2(1.5, 1.0);
+    float r = length(q);
+    float rad = 66.0 + 46.0 * (fbm(q * 0.016 + 4.0) - 0.5) + 30.0 * (fbm(q * 0.045 + 8.0) - 0.5) + 10.0 * (fbm(p * 0.09) - 0.5);
+    vec2 q2 = (p - vec2(372.0, -222.0)) / vec2(1.6, 1.0);
+    float head = 15.0 + 10.0 * (fbm(p * 0.04 + 9.0) - 0.5) - length(q2);
+    return max(rad - r, head);
+  }
+  float islH(vec2 p) {
+    float s = islD(p);
+    return smoothstep(0.0, 60.0, s) * (0.5 + 0.7 * fbm(p * 0.018 + 2.0)) + ridged(p * 0.03) * 0.22 * smoothstep(8.0, 50.0, s);
+  }
+  /* Trees: one per cell at most, a round crown of varying size. Returns the
+     crown's cover (0..1) and how far from its centre, for the shading. */
+  vec3 tree(vec2 p, float cell) {
+    vec2 c = floor(p / cell);
+    float best = 9.0; vec2 off = vec2(0.0); float sz = 0.0;
+    for (int j = -1; j <= 1; j++) for (int i = -1; i <= 1; i++) {
+      vec2 g = c + vec2(float(i), float(j));
+      vec2 h = hash2(g);
+      vec2 o = (g + 0.15 + 0.7 * h) * cell;
+      float r = cell * (0.38 + 0.22 * hash(g + 3.1));
+      float d = length(p - o) / r;
+      if (d < best) { best = d; off = (p - o) / r; sz = r; }
+    }
+    return vec3(1.0 - smoothstep(0.86, 1.0, best), off);
+  }
+  /* A Mediterranean town: one house per cell, a rectangle turned the way
+     the lane runs there (the direction drifts across town, so lanes curve),
+     sized at random and packed close. Whitewashed cubes with a parapet and
+     now and then a water tank, pastel walls, terracotta roofs pitched along
+     the long side, and the odd blue dome. */
+  float town(vec2 p, out vec3 roof, out vec2 hid) {
+    float cell = 9.0;
+    vec2 c = floor(p / cell);
+    roof = vec3(0.0);
+    hid = c;
+    float got = 0.0;
+    for (int j = -1; j <= 1; j++) for (int i = -1; i <= 1; i++) {
+      vec2 g = c + vec2(float(i), float(j));
+      if (hash(g + 2.7) < 0.07) continue;
+      vec2 o = (g + 0.5 + 0.35 * (hash2(g) - 0.5)) * cell;
+      float ang = (noise(o * 0.018) - 0.5) * 2.4 + (hash(g + 7.7) - 0.5) * 0.25;
+      vec2 cs = vec2(cos(ang), sin(ang));
+      vec2 rel = p - o;
+      vec2 l = vec2(dot(rel, cs), dot(rel, vec2(-cs.y, cs.x)));
+      vec2 hs = cell * vec2(0.36 + 0.16 * hash(g + 1.3), 0.27 + 0.14 * hash(g + 4.1));
+      if (abs(l.x) < hs.x && abs(l.y) < hs.y) {
+        float k = hash(g + 5.3);
+        vec3 col = k < 0.44 ? vec3(0.96, 0.95, 0.91) : k < 0.68 ? vec3(0.80, 0.46, 0.32) : k < 0.80 ? vec3(0.93, 0.79, 0.56) : k < 0.90 ? vec3(0.94, 0.75, 0.67) : vec3(0.88, 0.86, 0.80);
+        float rim = min(hs.x - abs(l.x), hs.y - abs(l.y));
+        if (k >= 0.44 && k < 0.68) {
+          // pitched roof: the ridge runs along the long side, one slope lit, one shaded
+          float lit = dot(vec2(-cs.y, cs.x), vec2(-0.67, -0.73)) * sign(l.y);
+          col *= lit > 0.0 ? 1.08 : 0.80;
+          col *= 0.95 + 0.05 * sin(l.x * 3.6);
+          col *= 1.0 - 0.25 * (1.0 - smoothstep(0.0, 0.5, abs(l.y)));
+        } else {
+          // flat roof: a parapet round the edge, a water tank on some
+          col *= 1.0 - 0.13 * (1.0 - smoothstep(0.4, 1.1, rim));
+          vec2 tk = vec2(hs.x * 0.45, -hs.y * 0.35);
+          if (hash(g + 6.2) < 0.35 && length(l - tk) < 0.95) col = vec3(0.45, 0.47, 0.50) + 0.25 * step(0.0, -(l - tk).x - (l - tk).y);
+          if (k < 0.44 && hash(g + 4.4) < 0.08 && length(l) < min(hs.x, hs.y) * 0.85) {
+            col = mix(vec3(0.12, 0.30, 0.64), vec3(0.58, 0.76, 0.98), clamp(0.55 - dot(rel / (min(hs.x, hs.y) * 0.85), vec2(-0.67, -0.73)) * 0.6, 0.0, 1.0));
+          }
+        }
+        col *= 0.93 + 0.1 * hash(g + 9.9);
+        roof = col;
+        hid = g;
+        got = 1.0;
+      }
+    }
+    return got;
+  }
+  void main() {
+    vec2 sp = vec2(gl_FragCoord.x, uRes.y - gl_FragCoord.y) / uDpr;
+    vec2 p = sp + uCam;
+    float t = uT;
+    vec3 L = normalize(vec3(-0.55, -0.6, 0.62));
+    float d = coast(p.x) - p.y;                       // > 0 at sea, < 0 inland, in px
+    float wash = 6.0 + 4.0 * sin(t * 1.2 + p.x * 0.045) + 3.0 * fbm3(vec2(p.x * 0.08, t * 0.6));
+    vec3 col;
+    if (d > -2.0) {
+      /* ── sea ── */
+      float e = 0.9, h = wave(p, t);
+      vec3 n = normalize(vec3(-(wave(p + vec2(e, 0.0), t) - h) * 1.6, -(wave(p + vec2(0.0, e), t) - h) * 1.6, 1.0));
+      float depth = smoothstep(0.0, 120.0, d);
+      col = mix(vec3(0.47, 0.83, 0.82), vec3(0.17, 0.58, 0.72), smoothstep(0.0, 0.45, depth));
+      col = mix(col, vec3(0.07, 0.33, 0.55), smoothstep(0.45, 1.0, depth));
+      col *= 0.78 + 0.32 * clamp(dot(n, -vec3(L.x, L.y, -L.z)), 0.0, 1.0);
+      vec3 Ls = normalize(vec3(0.45, -0.55, 0.70));
+      vec3 R = reflect(-Ls, n);
+      col += vec3(1.0, 0.97, 0.9) * (pow(clamp(R.z, 0.0, 1.0), 90.0) * 0.45 + pow(clamp(R.z, 0.0, 1.0), 900.0) * step(0.55, noise(p * 0.6 + t * 2.0)) * 1.4);
+      float ca = pow(1.0 - abs(sin(fbm(p * 0.09 + vec2(t * 0.35, -t * 0.25)) * 9.0)), 6.0);
+      col += vec3(0.85, 1.0, 0.95) * ca * 0.22 * (1.0 - smoothstep(0.0, 40.0, d));
+      float runs = smoothstep(0.82, 1.0, sin(d * 0.32 + t * 2.2 + fbm3(p * 0.05) * 3.0)) * (1.0 - smoothstep(6.0, 46.0, d));
+      float lace = smoothstep(0.45, 0.75, fbm3(p * 0.22 + vec2(t * 0.5, 0.0)));
+      float foam = max(1.0 - smoothstep(wash - 4.0, wash + 3.0, d), runs * lace * 0.8);
+      col = mix(col, vec3(0.97, 0.99, 1.0), clamp(foam, 0.0, 1.0) * 0.92);
+      // boats crossing, each in a lane of its own (46 px apart, wider than any
+      // wake), at a speed that swells and eases but never turns back
+      for (int k = 0; k < 2; k++) {
+        float fk = float(k);
+        float dir = fk < 0.5 ? 1.0 : -1.0;
+        float speed = 10.0 + fk * 4.0;
+        float run = speed * t + 14.0 * sin(t * 0.23 + fk * 2.0) + 6.0 * sin(t * 0.61 + fk * 4.0);
+        float lane = 36.0 + fk * 46.0;
+        float drift = 2.6 * sin(t * 0.31 + fk * 1.7);
+        vec2 bp = vec2(mod(fk * 190.0 + run * dir, 480.0) - 45.0, lane + drift);
+        float yaw = 2.6 * 0.31 * cos(t * 0.31 + fk * 1.7) / speed;
+        vec2 q = p - bp;
+        q = vec2(q.x * dir, q.y);
+        q = vec2(q.x + yaw * q.y, q.y - yaw * q.x);
+        float back = -q.x;
+        float open = 0.29 + 0.05 * sin(t * 1.3 + fk * 3.0 + back * 0.05);
+        float spread = back * open;
+        float churn = smoothstep(0.25, 0.65, noise(vec2(back * 0.35 - t * 1.6, q.y * 0.45 + fk * 7.0)));
+        float edgeW = 0.7 + 0.8 * noise(vec2(back * 0.2 + fk * 3.0, t * 0.8));
+        float fade = step(0.0, back) * (1.0 - smoothstep(8.0, 64.0, back));
+        float wake = (1.0 - smoothstep(edgeW * 0.6, edgeW * 1.8, abs(abs(q.y) - spread))) * fade * (0.55 + 0.45 * churn);
+        wake += (1.0 - smoothstep(0.0, 2.4, abs(q.y))) * step(0.0, back) * (1.0 - smoothstep(4.0, 30.0, back)) * 0.7 * churn;
+        col = mix(col, vec3(0.96, 0.98, 1.0), clamp(wake, 0.0, 1.0) * 0.78);
+        float hull = length(q / vec2(6.5, 2.4));
+        col = mix(col, vec3(0.20, 0.30, 0.40), (1.0 - smoothstep(1.0, 1.5, length((q - vec2(-1.0, 1.4)) / vec2(6.5, 2.4)))) * 0.25);
+        col = mix(col, mix(vec3(0.98), vec3(0.80, 0.82, 0.85), step(0.0, q.y)), 1.0 - smoothstep(0.92, 1.0, hull));
+        col = mix(col, vec3(0.55, 0.36, 0.24), 1.0 - smoothstep(0.9, 1.0, length((q - vec2(-1.0, 0.0)) / vec2(2.4, 1.2))));
+      }
+      // the island: a shelf of shallow water, a reef, surf, a beach, a wooded hill
+      if (abs(p.y + 250.0) < 175.0 && abs(p.x - 265.0) < 310.0) {
+        float sI = islD(p);
+        if (sI < 0.0) {
+          float sd = -sI;
+          float shelf = 1.0 - smoothstep(4.0, 78.0, sd);
+          float ripple = 0.5 + 0.5 * sin(dot(p, vec2(0.42, 0.25)) + fbm(p * 0.05) * 6.0);
+          vec3 sh = mix(vec3(0.13, 0.52, 0.66), vec3(0.40, 0.83, 0.81), smoothstep(62.0, 10.0, sd));
+          sh = mix(sh, vec3(0.80, 0.86, 0.74), smoothstep(26.0, 0.0, sd) * 0.4);
+          sh *= 0.95 + 0.08 * ripple * smoothstep(50.0, 4.0, sd);
+          float swell = sin(sd * 0.3 + t * 1.8 + fbm3(p * 0.03) * 4.0);
+          sh *= 1.0 + 0.09 * swell * smoothstep(70.0, 20.0, sd) * smoothstep(0.0, 8.0, sd);
+          float reef = smoothstep(0.57, 0.68, fbm(p * 0.045 + 13.0)) * smoothstep(12.0, 22.0, sd) * (1.0 - smoothstep(46.0, 60.0, sd));
+          sh = mix(sh, vec3(0.18, 0.40, 0.42) * (0.82 + 0.3 * noise(p * 0.5)), reef * 0.75);
+          float lw = 0.85 + 0.3 * clamp(dot(n, -vec3(L.x, L.y, -L.z)), 0.0, 1.0);
+          col = mix(col, sh * lw, shelf);
+          float cs = pow(1.0 - abs(sin(fbm(p * 0.12 + vec2(t * 0.4, -t * 0.3)) * 10.0)), 7.0);
+          col += vec3(0.9, 1.0, 0.95) * cs * 0.24 * smoothstep(45.0, 4.0, sd);
+          // surf breaking along the reef edge, in pieces
+          float reefLine = 44.0 + 12.0 * (fbm(p * 0.02 + 5.0) - 0.5);
+          float brk = (1.0 - smoothstep(0.0, 2.0 + 2.5 * fbm3(p * 0.04 + vec2(t * 0.25, 0.0)), abs(sd - reefLine - 2.5 * sin(t * 0.8 + p.x * 0.03))));
+          brk *= smoothstep(0.35, 0.62, noise(p * 0.08 + vec2(t * 0.6, 0.0))) * smoothstep(0.42, 0.56, fbm(p * 0.03 + 13.0));
+          col = mix(col, vec3(0.96, 0.99, 1.0), brk * 0.6);
+          // waves rolling in, foam lines thinning out as they come, the swash on the sand
+          float lace2 = smoothstep(0.42, 0.72, fbm3(p * 0.25 + vec2(t * 0.4, 0.0)));
+          float roll = smoothstep(0.9, 1.0, swell) * (1.0 - smoothstep(5.0, 26.0, sd));
+          float iw = 4.5 + 3.5 * sin(t * 1.1 + fbm(p * 0.03) * 6.0);
+          float swash = 1.0 - smoothstep(iw - 3.0, iw + 2.5, sd);
+          col = mix(col, vec3(0.97, 0.99, 1.0), clamp(max(swash * (0.55 + 0.45 * lace2), roll * lace2 * 0.8), 0.0, 1.0) * 0.9);
+        } else {
+          float hI = islH(p);
+          vec3 nI = normalize(vec3(-(islH(p + vec2(1.0, 0.0)) - hI) * 110.0, -(islH(p + vec2(0.0, 1.0)) - hI) * 110.0, 1.0));
+          float shI = clamp(dot(nI, normalize(vec3(-L.x, -L.y, L.z))), 0.0, 1.0);
+          float bwI = 5.0 + 15.0 * fbm(p * 0.03 + 2.0);
+          vec3 sandI = vec3(0.95, 0.89, 0.74) + (hash(floor(p * 3.0)) - 0.5) * 0.05;
+          sandI = mix(sandI, vec3(0.76, 0.69, 0.56), (1.0 - smoothstep(0.0, 4.5, sI)) * 0.75);
+          float big = step(0.55, fbm(p * 0.025 + 6.0));
+          vec3 tr = big > 0.5 ? tree(p, 8.0) : tree(p, 4.6);
+          vec3 trS = big > 0.5 ? tree(p - vec2(2.6, 3.0), 8.0) : tree(p - vec2(1.7, 2.0), 4.6);
+          float lit = clamp(0.62 - dot(tr.yz, vec2(L.x, L.y)) * 0.55, 0.0, 1.0);
+          float jung = smoothstep(bwI, bwI + 8.0, sI);
+          vec3 under = mix(vec3(0.46, 0.55, 0.28), vec3(0.28, 0.42, 0.19), noise(p * 0.1)) * (1.0 - 0.35 * trS.x);
+          vec3 canopy = mix(vec3(0.09, 0.27, 0.12), vec3(0.42, 0.62, 0.28), lit) * (0.9 + 0.2 * noise(p * 2.0));
+          vec3 landI = mix(sandI, under, jung);
+          landI *= 1.0 - 0.3 * trS.x * smoothstep(bwI - 4.0, bwI, sI) * (1.0 - jung);
+          landI = mix(landI, canopy, tr.x * smoothstep(bwI - 3.0, bwI + 5.0, sI) * (0.35 + 0.65 * smoothstep(0.22, 0.36, fbm(p * 0.035 + 1.0))));
+          // bare rock on the steep top and boulders where the headland meets the sea
+          float slI = 1.0 - nI.z;
+          landI = mix(landI, vec3(0.62, 0.58, 0.50) * (0.9 + 0.15 * noise(p * 0.8)), smoothstep(0.7, 0.88, slI) * 0.6);
+          vec3 bo = tree(p, 4.0);
+          float blit = clamp(0.6 - dot(bo.yz, vec2(L.x, L.y)) * 0.6, 0.0, 1.0);
+          vec3 rocks = mix(vec3(0.30, 0.29, 0.27), mix(vec3(0.52, 0.50, 0.46), vec3(0.80, 0.77, 0.71), blit), bo.x);
+          float rk = smoothstep(0.6, 0.7, fbm(p * 0.05 + 4.0)) * (1.0 - smoothstep(bwI - 2.0, bwI + 4.0, sI));
+          landI = mix(landI, rocks, rk);
+          landI *= 0.5 + 0.7 * shI;
+          col = mix(vec3(0.90, 0.95, 0.93), landI, smoothstep(0.0, 1.4, sI));
+        }
+        // a sailboat going round, well outside the reef
+        float sa = t * 0.06;
+        vec2 sb = vec2(230.0, -250.0) + vec2(cos(sa) * 1.5, sin(sa)) * 140.0;
+        vec2 tang = normalize(vec2(-sin(sa) * 1.5, cos(sa)));
+        vec2 q = p - sb;
+        q = vec2(dot(q, tang), dot(q, vec2(-tang.y, tang.x)));
+        float back = -q.x;
+        float wk = (1.0 - smoothstep(0.5, 1.6, abs(abs(q.y) - back * 0.22))) * step(0.0, back) * (1.0 - smoothstep(6.0, 44.0, back));
+        col = mix(col, vec3(0.96, 0.98, 1.0), wk * 0.7);
+        col = mix(col, vec3(0.10, 0.22, 0.32), (1.0 - smoothstep(1.0, 1.4, length((q - vec2(-1.5, 2.6)) / vec2(5.0, 3.0)))) * 0.25);
+        col = mix(col, vec3(0.98), 1.0 - smoothstep(0.9, 1.0, length(q / vec2(4.8, 1.7))));
+        float sail = max(abs(q.x + 0.4) - 2.6, abs(q.y + 1.2 - (q.x + 0.4) * 0.15) - 0.7);
+        col = mix(col, vec3(0.88, 0.86, 0.82), 1.0 - smoothstep(-0.2, 0.3, sail));
+      }
+    } else {
+      /* ── land: hillside, macchia, and the town down at the water ── */
+      float e = 1.2, h = ground(p);
+      vec3 n = normalize(vec3(-(ground(p + vec2(e, 0.0)) - h) * 17.0, -(ground(p + vec2(0.0, e)) - h) * 17.0, 1.0));
+      float shade = clamp(dot(n, normalize(vec3(-L.x, -L.y, L.z))), 0.0, 1.0);
+      float slope = 1.0 - n.z;
+      float veg = fbm(p * 0.03 + 2.0);
+      vec3 base = mix(vec3(0.78, 0.72, 0.53), vec3(0.50, 0.56, 0.33), smoothstep(0.42, 0.58, veg));
+      base = mix(base, vec3(0.36, 0.45, 0.25), smoothstep(0.6, 0.7, veg) * 0.8);
+      base *= 0.9 + 0.16 * noise(p * 1.4) + 0.06 * (hash(floor(p * 2.0)) - 0.5);
+      float shrub = smoothstep(0.42, 0.6, fbm(p * 0.022 + 11.0));
+      vec3 shT = tree(p - vec2(2.0, 2.4), 6.0);
+      base *= 1.0 - 0.34 * shT.x * shrub;
+      vec3 tr = tree(p, 6.0);
+      float lit = clamp(0.62 - dot(tr.yz, vec2(L.x, L.y)) * 0.55, 0.0, 1.0);
+      vec3 leaf = mix(vec3(0.16, 0.27, 0.14), vec3(0.45, 0.55, 0.30), lit) * (0.9 + 0.2 * noise(p * 2.3));
+      base = mix(base, leaf, tr.x * shrub * (1.0 - smoothstep(0.35, 0.6, slope)));
+      vec3 limestone = mix(vec3(0.70, 0.66, 0.58), vec3(0.88, 0.85, 0.78), noise(p * 0.7)) * (0.92 + 0.12 * noise(p * 3.1));
+      base = mix(base, limestone, smoothstep(0.3, 0.6, slope) * 0.75);
+      // the town: dense by the water, thinning out up the hill, house by house
+      vec3 roof, tmpRoof; vec2 hid, tmpId;
+      float occ = town(p, roof, hid);
+      float occS = town(p - vec2(2.4, 3.0), tmpRoof, tmpId);
+      float near = exp(d / 150.0);
+      float want = fbm(p * 0.011 + 3.0) * 0.75 * exp(d / 420.0) + near * 0.6;
+      float here = step(0.55 + 0.12 * hash(hid + 6.6), want);
+      float hereS = step(0.55 + 0.12 * hash(tmpId + 6.6), want);
+      // lanes are paved only in the dense heart; where no house stands the hillside shows
+      float dense = smoothstep(0.62, 0.7, want);
+      vec3 stone = vec3(0.87, 0.84, 0.77) * (0.95 + 0.07 * noise(p * 1.6));
+      vec3 open = roof.x < -0.5 ? mix(stone, vec3(0.48, 0.57, 0.34), step(0.5, hash(hid + 3.0))) : stone;
+      col = mix(base, open, dense);
+      if (occ * here > 0.5) col = roof;
+      else if (occS * hereS > 0.5) col *= 0.64;
+      // the hinterland: parcels with their own crop and row direction, hedges between
+      float farm = smoothstep(150.0, 200.0, -d) * (1.0 - smoothstep(450.0, 510.0, -d));
+      if (farm > 0.0) {
+        vec2 fp = (p + vec2(fbm(p * 0.015), fbm(p * 0.015 + 7.0)) * 10.0) * vec2(0.62, 1.0);
+        vec2 fc = floor(fp / 58.0);
+        float b1 = 99.0, b2 = 99.0; vec2 fid = vec2(0.0);
+        for (int fj = -1; fj <= 1; fj++) for (int fi = -1; fi <= 1; fi++) {
+          vec2 g = fc + vec2(float(fi), float(fj));
+          float dd = length(fp - (g + 0.25 + 0.5 * hash2(g)) * 58.0);
+          if (dd < b1) { b2 = b1; b1 = dd; fid = g; } else if (dd < b2) { b2 = dd; }
+        }
+        float kind = hash(fid + 1.7);
+        float ang = hash(fid + 4.2) * 3.1416;
+        vec2 dir = vec2(cos(ang), sin(ang));
+        float u = dot(p, dir), v = dot(p, vec2(-dir.y, dir.x));
+        vec3 parcel;
+        if (kind < 0.36) {
+          float r = smoothstep(-0.2, 0.6, sin(u * 6.2831 / 4.0));
+          vec3 vine = mix(vec3(0.24, 0.36, 0.16), vec3(0.44, 0.54, 0.25), noise(p * 1.4)) * (0.85 + 0.2 * noise(vec2(u * 0.3, v * 1.6)));
+          parcel = mix(vec3(0.67, 0.57, 0.42), vine, r);
+        } else if (kind < 0.56) {
+          parcel = mix(vec3(0.88, 0.78, 0.52), vec3(0.80, 0.68, 0.43), 0.5 + 0.5 * sin(u * 6.2831 / 2.4)) * (0.94 + 0.1 * noise(p * 0.5));
+        } else if (kind < 0.74) {
+          vec2 q = vec2(u, v) / 9.0;
+          vec2 qc = fract(q) - 0.5 + (hash2(floor(q)) - 0.5) * 0.18;
+          float olive = 1.0 - smoothstep(0.2, 0.33, length(qc));
+          float oshadow = 1.0 - smoothstep(0.2, 0.36, length(qc - vec2(0.12, 0.16)));
+          vec3 soil = vec3(0.76, 0.68, 0.52) * (1.0 - 0.28 * oshadow);
+          parcel = mix(soil, mix(vec3(0.36, 0.42, 0.28), vec3(0.56, 0.60, 0.42), clamp(0.6 - dot(qc, vec2(L.x, L.y)) * 1.4, 0.0, 1.0)), olive);
+        } else if (kind < 0.88) {
+          parcel = mix(vec3(0.50, 0.39, 0.28), vec3(0.63, 0.51, 0.37), 0.5 + 0.5 * sin(u * 6.2831 / 1.9)) * (0.95 + 0.08 * noise(p * 0.6));
+        } else {
+          parcel = mix(vec3(0.47, 0.57, 0.29), vec3(0.58, 0.63, 0.33), noise(p * 0.08));
+        }
+        // hedgerows and the odd cypress along the field edges
+        float edgeD = (b2 - b1) * 0.5;
+        parcel *= 0.92 + 0.16 * hash(fid + 5.5);
+        float hedge = 1.0 - smoothstep(0.5, 1.5, edgeD);
+        vec3 cy = tree(p, 5.0);
+        parcel = mix(parcel, vec3(0.30, 0.35, 0.20), hedge * 0.75);
+        parcel = mix(parcel, vec3(0.12, 0.20, 0.10), cy.x * (1.0 - smoothstep(1.5, 3.5, edgeD)) * step(0.7, hash(fid + 9.0)));
+        float level = 1.0 - smoothstep(0.38, 0.6, slope);
+        col = mix(col, parcel, farm * level * (1.0 - step(0.5, occ * here)));
+        // a country road winding through, a car on it
+        float ry = 425.0 + 26.0 * sin(p.x * 0.011 + 1.0) + 9.0 * sin(p.x * 0.029);
+        float rd = abs(p.y - ry);
+        col = mix(col, vec3(0.86, 0.82, 0.72), (1.0 - smoothstep(4.6, 5.6, rd)) * farm);
+        col = mix(col, vec3(0.36, 0.36, 0.37) * (0.95 + 0.08 * noise(p * 2.0)), (1.0 - smoothstep(3.4, 4.2, rd)) * farm);
+        col = mix(col, vec3(0.95), (1.0 - smoothstep(0.25, 0.6, rd)) * step(0.5, fract(p.x / 9.0)) * farm);
+        float cx = mod(t * 22.0 + 6.0 * sin(t * 0.4), 760.0) - 120.0;
+        float cyy = 425.0 + 26.0 * sin(cx * 0.011 + 1.0) + 9.0 * sin(cx * 0.029) - 1.6;
+        float slopeR = 26.0 * 0.011 * cos(cx * 0.011 + 1.0) + 9.0 * 0.029 * cos(cx * 0.029);
+        vec2 cq = p - vec2(cx, cyy);
+        float ca = atan(slopeR);
+        cq = vec2(cq.x * cos(ca) + cq.y * sin(ca), -cq.x * sin(ca) + cq.y * cos(ca));
+        float body = max(abs(cq.x) - 3.4, abs(cq.y) - 1.4);
+        col = mix(col, vec3(0.14, 0.14, 0.15), (1.0 - smoothstep(0.0, 1.4, max(abs(cq.x - 0.8) - 3.6, abs(cq.y - 0.9) - 1.6))) * 0.35);
+        col = mix(col, vec3(0.78, 0.16, 0.13), 1.0 - smoothstep(-0.2, 0.4, body));
+        col = mix(col, vec3(0.20, 0.24, 0.30), (1.0 - smoothstep(-0.2, 0.3, max(abs(cq.x - 0.9) - 1.0, abs(cq.y) - 1.0))));
+      }
+      col *= 0.64 + 0.5 * shade;
+      col *= 1.0 - 0.1 * smoothstep(0.55, 0.0, h);
+      // the high country: broad massifs, conifers in the valley, snow on the tops
+      float alpine = smoothstep(470.0, 590.0, -d);
+      if (alpine > 0.0) {
+        float lakeD = length((p - vec2(250.0, 790.0)) / vec2(2.3, 1.0));
+        float valley = mix(0.35, 1.0, smoothstep(26.0, 80.0, lakeD));
+        float hA = (peaks(p * 0.006 + 5.0) * 1.3 - 0.2 + fbm(p * 0.035) * 0.05) * valley;
+        float hX = (peaks((p + vec2(1.5, 0.0)) * 0.006 + 5.0) * 1.3 - 0.2 + fbm((p + vec2(1.5, 0.0)) * 0.035) * 0.05) * valley;
+        float hY = (peaks((p + vec2(0.0, 1.5)) * 0.006 + 5.0) * 1.3 - 0.2 + fbm((p + vec2(0.0, 1.5)) * 0.035) * 0.05) * valley;
+        vec3 nA = normalize(vec3(-(hX - hA) * 95.0, -(hY - hA) * 95.0, 1.0));
+        float shA = clamp(dot(nA, normalize(vec3(-L.x, -L.y, L.z))), 0.0, 1.0);
+        float slA = 1.0 - nA.z;
+        vec3 rockA = mix(vec3(0.46, 0.43, 0.39), vec3(0.62, 0.58, 0.52), noise(p * 0.05)) * (0.94 + 0.08 * noise(p * 0.9));
+        vec3 trA = tree(p, 4.4);
+        vec3 trS = tree(p - vec2(1.6, 2.0), 4.4);
+        float conifer = (1.0 - smoothstep(0.40, 0.50, hA + (noise(p * 0.06) - 0.5) * 0.08)) * (1.0 - smoothstep(0.5, 0.75, slA));
+        vec3 meadow = mix(vec3(0.42, 0.50, 0.28), vec3(0.52, 0.56, 0.32), noise(p * 0.1));
+        vec3 forestA = meadow * (1.0 - 0.4 * trS.x);
+        forestA = mix(forestA, mix(vec3(0.07, 0.15, 0.09), vec3(0.20, 0.33, 0.18), clamp(0.6 - dot(trA.yz, vec2(L.x, L.y)) * 0.6, 0.0, 1.0)), trA.x * smoothstep(0.2, 0.5, fbm(p * 0.02 + 3.0) + 0.25));
+        vec3 alp = mix(rockA, forestA, conifer);
+        float snowA = smoothstep(0.75, 0.81, hA + (noise(p * 0.09) - 0.5) * 0.1) * (1.0 - smoothstep(0.55, 0.8, slA));
+        snowA = max(snowA, smoothstep(0.86, 0.94, hA));
+        alp *= 0.36 + 0.86 * shA;
+        alp = mix(alp * vec3(0.8, 0.87, 1.05), alp * vec3(1.04, 1.0, 0.95), smoothstep(0.35, 0.8, shA));
+        vec3 snowC = mix(vec3(0.70, 0.77, 0.88), vec3(0.98, 0.98, 0.97), smoothstep(0.2, 0.75, shA)) * (0.96 + 0.05 * noise(p * 0.6));
+        alp = mix(alp, snowC, snowA);
+        col = mix(col, alp, alpine);
+      }
+      // a mountain lake in a valley
+      vec2 lc = vec2(250.0, 790.0);
+      float ld = length((p - lc) / vec2(2.3, 1.0)) + (fbm(p * 0.05) - 0.5) * 14.0;
+      if (ld < 34.0) {
+        float lw = wave(p * 1.3, t * 0.6);
+        vec3 lake = mix(vec3(0.12, 0.36, 0.48), vec3(0.24, 0.55, 0.62), smoothstep(34.0, 12.0, ld));
+        lake *= 0.86 + 0.12 * lw;
+        lake += vec3(1.0, 0.98, 0.92) * pow(noise(p * 0.6 + t * 1.2), 14.0) * 0.7;
+        col = mix(col, lake, smoothstep(34.0, 31.0, ld));
+        col = mix(col, vec3(0.82, 0.80, 0.74), (1.0 - smoothstep(0.0, 1.8, abs(ld - 32.0))) * 0.8);
+      }
+      // the shore: small coves of sand between rocks, wet where the wash runs
+      float bw = 17.0 + 10.0 * fbm3(vec2(p.x * 0.03, 1.0));
+      float shore = 1.0 - smoothstep(bw - 3.0, bw + 2.0, -d);
+      float rock = smoothstep(0.56, 0.66, fbm(p * 0.05 + 4.0));
+      vec3 sand = vec3(0.93, 0.86, 0.71) + (hash(floor(p * 3.0)) - 0.5) * 0.06;
+      float wet = 1.0 - smoothstep(0.0, 6.0 + wash * 0.4, -d);
+      sand = mix(sand, vec3(0.74, 0.67, 0.55), wet * 0.8);
+      // boulders: round stones lit from the top left, darker in the cracks between
+      vec3 bo = tree(p, 4.5);
+      float blit = clamp(0.6 - dot(bo.yz, vec2(L.x, L.y)) * 0.6, 0.0, 1.0);
+      vec3 rocks = mix(vec3(0.30, 0.29, 0.27), mix(vec3(0.52, 0.50, 0.46), vec3(0.80, 0.77, 0.71), blit), bo.x);
+      vec3 edgeCol = mix(sand, rocks, rock);
+      col = mix(col, edgeCol, shore);
+    }
+    // haze into the page below: a long, uneven edge that drifts slowly
+    float H = uRes.y / uDpr;
+    float edge = H - 118.0 + 42.0 * (fbm3(vec2(sp.x * 0.011, t * 0.04)) - 0.5) * 2.0 + 22.0 * (fbm(sp * 0.028 + vec2(t * 0.05, 0.0)) - 0.5) * 2.0;
+    float mist = smoothstep(edge - 34.0, edge + 84.0, sp.y);
+    mist = clamp(mist + smoothstep(H - 24.0, H, sp.y), 0.0, 1.0);
+    col = mix(col, vec3(1.0, 0.98, 0.961), mist * uHaze);
+    gl_FragColor = vec4(col, 1.0);
+  }`;
+
+const VERTEX = 'attribute vec2 a; void main(){ gl_Position = vec4(a, 0.0, 1.0); }';
+
+export interface Scenery {
+  /** Glides the camera to another place; a still picture jumps there. */
+  flyTo(camera: Camera): void;
+}
+
+interface SceneryOptions {
+  /** The height the scene is framed for; the box may be taller or shorter. */
+  frame: number;
+  camera?: Camera;
+  /** The soft fade into the page at the foot of the picture; off beside a column. */
+  haze?: boolean;
+}
+
+const reducedMotion = (): boolean =>
+  typeof matchMedia === 'function' && matchMedia('(prefers-reduced-motion: reduce)').matches;
+
+export function startScenery(box: HTMLElement, opts: SceneryOptions): Scenery | null {
+  const canvas = document.createElement('canvas');
+  canvas.className = 'scenery';
+  canvas.setAttribute('aria-hidden', 'true');
+  box.prepend(canvas);
+  const gl = canvas.getContext('webgl', { antialias: false, premultipliedAlpha: false, powerPreference: 'low-power' });
+  if (!gl) {
+    canvas.remove();
+    return null;
+  }
+  const compile = (type: number, src: string): WebGLShader | null => {
+    const shader = gl.createShader(type);
+    if (!shader) return null;
+    gl.shaderSource(shader, src);
+    gl.compileShader(shader);
+    return shader;
+  };
+  const program = gl.createProgram();
+  const vs = compile(gl.VERTEX_SHADER, VERTEX);
+  const fs = compile(gl.FRAGMENT_SHADER, FRAGMENT);
+  if (!program || !vs || !fs) {
+    canvas.remove();
+    return null;
+  }
+  gl.attachShader(program, vs);
+  gl.attachShader(program, fs);
+  gl.linkProgram(program);
+  if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+    canvas.remove();
+    return null;
+  }
+  gl.useProgram(program);
+  gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
+  gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([-1, -1, 1, -1, -1, 1, 1, 1]), gl.STATIC_DRAW);
+  const position = gl.getAttribLocation(program, 'a');
+  gl.enableVertexAttribArray(position);
+  gl.vertexAttribPointer(position, 2, gl.FLOAT, false, 0, 0);
+  const uRes = gl.getUniformLocation(program, 'uRes');
+  const uDpr = gl.getUniformLocation(program, 'uDpr');
+  const uT = gl.getUniformLocation(program, 'uT');
+  const uCam = gl.getUniformLocation(program, 'uCam');
+  gl.uniform1f(gl.getUniformLocation(program, 'uHaze'), opts.haze === false ? 0 : 1);
+
+  // The picture's resolution: the screen's, capped at 2, scaled down when frames come slow.
+  let quality = 1;
+  let offset: [number, number] = [0, 0];
+  const resize = () => {
+    const cssWidth = box.clientWidth || FRAME_WIDTH;
+    const cssHeight = box.clientHeight || opts.frame;
+    const ratio = Math.min(2, Math.max(1, window.devicePixelRatio || 1)) * quality;
+    canvas.width = Math.max(1, Math.round(cssWidth * ratio));
+    canvas.height = Math.max(1, Math.round(cssHeight * ratio));
+    canvas.style.height = `${cssHeight}px`;
+    gl.viewport(0, 0, canvas.width, canvas.height);
+    gl.uniform2f(uRes, canvas.width, canvas.height);
+    gl.uniform1f(uDpr, canvas.width / cssWidth);
+    // The scene is framed for a phone: a bigger box shows more around the same
+    // centre, a smaller one (a small iPhone) the middle of it.
+    offset = [(cssWidth - FRAME_WIDTH) / 2, (cssHeight - opts.frame) / 2];
+  };
+  resize();
+
+  const still = reducedMotion();
+  const born = performance.now();
+  let camera: [number, number] = [opts.camera?.[0] ?? 0, opts.camera?.[1] ?? 0];
+  let flight: { from: [number, number]; to: Camera; start: number; duration: number } | null = null;
+  let running = false;
+  let lastFrame = 0;
+  let measured = 0;
+  let slowFrames = 0;
+
+  const draw = (now: number) => {
+    if (flight) {
+      const k = Math.min(1, (now - flight.start) / flight.duration);
+      const e = k < 0.5 ? 4 * k * k * k : 1 - Math.pow(-2 * k + 2, 3) / 2;
+      camera = [
+        flight.from[0] + (flight.to[0] - flight.from[0]) * e,
+        flight.from[1] + (flight.to[1] - flight.from[1]) * e,
+      ];
+      if (k >= 1) flight = null;
+    }
+    gl.uniform2f(uCam, camera[0] - offset[0], camera[1] - offset[1]);
+    gl.uniform1f(uT, still ? 4 : (now - born) / 1000 + 4);
+    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
+  };
+
+  const frame = (now: number) => {
+    if (!canvas.isConnected || document.hidden) {
+      running = false;
+      return;
+    }
+    // A device that cannot keep up gets a smaller picture once, rather than a stutter.
+    if (lastFrame && quality === 1 && measured < 90) {
+      measured += 1;
+      if (now - lastFrame > 24) slowFrames += 1;
+      if (measured === 90 && slowFrames > 45) {
+        quality = 0.7;
+        resize();
+      }
+    }
+    lastFrame = now;
+    draw(now);
+    if (!still || flight) requestAnimationFrame(frame);
+    else running = false;
+  };
+  const run = () => {
+    if (running) return;
+    running = true;
+    lastFrame = 0;
+    requestAnimationFrame(frame);
+  };
+  run();
+
+  // The loop stops in the background (document.hidden) and starts again on return.
+  const wake = () => {
+    if (!document.hidden && canvas.isConnected) run();
+  };
+  document.addEventListener('visibilitychange', wake);
+  if (typeof ResizeObserver === 'function') {
+    const observer = new ResizeObserver(() => {
+      if (!canvas.isConnected) {
+        observer.disconnect();
+        document.removeEventListener('visibilitychange', wake);
+        return;
+      }
+      resize();
+      if (still) run();
+    });
+    observer.observe(box);
+  }
+  canvas.addEventListener('webglcontextlost', (event) => {
+    event.preventDefault();
+    canvas.remove();
+  });
+
+  return {
+    flyTo(to: Camera) {
+      if (still) {
+        camera = [to[0], to[1]];
+        run();
+        return;
+      }
+      const distance = Math.hypot(to[0] - camera[0], to[1] - camera[1]);
+      flight = {
+        from: [camera[0], camera[1]],
+        to,
+        start: performance.now(),
+        duration: Math.min(1700, 700 + distance * 1.1),
+      };
+      run();
+    },
+  };
+}

client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@trek/client",
-  "version": "5.1.2",
+  "version": "5.1.3",
   "engines": {
     "node": "^22.22.2 || ^24.15.0 || >=26.0.0"
   },
@@ -18,6 +18,7 @@
     "store:graphic": "node scripts/generate-feature-graphic.mjs",
     "store:check": "node scripts/check-store-metadata.mjs",
     "build": "vite build",
+    "postbuild": "node scripts/precompress.mjs",
     "build:analyze": "vite build --mode analyze",
     "preview": "vite preview",
     "typecheck": "tsc --noEmit",
@@ -52,15 +53,15 @@
     "format:check": "prettier --check \"src/**/*.tsx\" \"src/**/*.css\""
   },
   "dependencies": {
-    "@assistant-ui/react": "0.15.25",
+    "@assistant-ui/react": "0.15.32",
     "@capacitor/action-sheet": "^8.1.1",
-    "@capacitor/android": "^8.5.0",
+    "@capacitor/android": "^8.6.0",
     "@capacitor/app": "^8.1.1",
     "@capacitor/core": "^8.5.0",
     "@capacitor/dialog": "^8.0.1",
     "@capacitor/filesystem": "^8.1.3",
     "@capacitor/haptics": "^8.0.2",
-    "@capacitor/ios": "^8.5.0",
+    "@capacitor/ios": "^8.6.0",
     "@capacitor/keyboard": "^8.0.5",
     "@capacitor/share": "^8.0.1",
     "@capacitor/splash-screen": "^8.0.2",
@@ -105,19 +106,19 @@
     "@noble/hashes": "^1.8.0",
     "@simplewebauthn/browser": "^13.3.0",
     "@trek/shared": "*",
-    "axios": "^1.20.0",
-    "dexie": "^4.4.6",
+    "axios": "^1.21.0",
+    "dexie": "^4.4.7",
     "drag-drop-touch": "^1.3.1",
-    "heic-to": "^1.5.2",
+    "heic-to": "^1.6.7",
     "iso-3166-2": "^1.0.0",
     "leaflet": "^1.9.4",
     "lucide-react": "^0.577.0",
     "mapbox-gl": "^3.31.0",
-    "maplibre-gl": "6.15.0",
+    "maplibre-gl": "6.16.0",
     "modern-screenshot": "4.7.0",
-    "plyr": "^3.8.4",
-    "react": "^19.3.0",
-    "react-dom": "^19.3.0",
+    "plyr": "^3.8.5",
+    "react": "^19.3.1",
+    "react-dom": "^19.3.1",
     "react-dropzone": "^14.4.1",
     "react-leaflet": "^5.0.0",
     "react-leaflet-cluster": "^4.1.3",
@@ -131,41 +132,41 @@
     "zustand": "^5.0.15"
   },
   "devDependencies": {
-    "@capacitor/cli": "^8.5.0",
+    "@capacitor/cli": "^8.6.0",
     "@eslint/js": "^10.0.1",
     "@jscpd/core": "^4.2.5",
     "@jscpd/tokenizer": "^4.2.6",
-    "@playwright/test": "^1.63.0",
+    "@playwright/test": "^1.65.0",
     "@testing-library/jest-dom": "^6.10.0",
     "@testing-library/react": "^16.3.3",
-    "@testing-library/user-event": "^14.6.7",
+    "@testing-library/user-event": "^14.6.8",
     "@trivago/prettier-plugin-sort-imports": "^6.0.2",
     "@types/leaflet": "^1.9.22",
     "@types/node": "^25.9.8",
     "@types/react": "^19.3.0",
     "@types/react-dom": "^19.3.0",
-    "@vitejs/plugin-react": "^6.1.1",
+    "@vitejs/plugin-react": "^6.2.1",
     "@vitest/coverage-v8": "^4.1.12",
-    "autoprefixer": "^10.6.1",
+    "autoprefixer": "^10.6.2",
     "eslint": "^10.11.0",
     "eslint-config-flat-gitignore": "^2.4.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-react-hooks": "^7.1.1",
     "eslint-plugin-react-refresh": "^0.5.7",
-    "fake-indexeddb": "^6.2.5",
+    "fake-indexeddb": "^6.2.7",
     "jsdom": "^29.1.1",
     "msw": "^2.15.0",
     "postcss": "^8.5.28",
-    "prettier": "^3.9.8",
+    "prettier": "^3.9.10",
     "prettier-plugin-organize-imports": "^4.3.0",
     "prettier-plugin-tailwindcss": "^0.8.1",
-    "rollup-plugin-visualizer": "^7.1.1",
+    "rollup-plugin-visualizer": "^7.1.2",
     "sharp": "^0.35.5",
     "tailwindcss": "^3.4.19",
     "typescript": "^6.0.3",
-    "typescript-eslint": "^8.70.0",
-    "vite": "8.3.5",
-    "vite-plugin-pwa": "^1.3.0",
+    "typescript-eslint": "^8.72.1",
+    "vite": "8.3.6",
+    "vite-plugin-pwa": "^2.0.0",
     "vitest": "^4.1.12"
   }
 }

client/public/native-handoff.js

@@ -0,0 +1,43 @@
+// The page /api/auth/native/start answers with runs this (see NativeAuthController.start).
+// A browser that ran an older TREK keeps that version's app in its service worker, and
+// the worker would answer the handoff page with an app that has no such page. So the
+// worker goes first, and the handoff page loads from the server.
+(function () {
+  var script = document.currentScript;
+  var target = script && script.getAttribute('data-target');
+  if (!target || target.indexOf('/native-handoff?') !== 0) return;
+  var gone = false;
+  var go = function () {
+    if (gone) return;
+    gone = true;
+    location.replace(target);
+  };
+  // Until the sign-in is handed back to the app, no worker is registered and no
+  // new version reloads the page (src/native/browserSignInFlag.ts): a tab still
+  // open on the older TREK keeps its worker alive, and either would bring it back.
+  try {
+    localStorage.setItem('trek_native_signin', String(Date.now()));
+  } catch (e) {
+    /* site data blocked: the worker is still taken off below */
+  }
+  if (!('serviceWorker' in navigator) || !navigator.serviceWorker.getRegistrations) {
+    go();
+    return;
+  }
+  // Never stuck here: whatever the browser does with the workers, the page moves on.
+  var timer = setTimeout(go, 3000);
+  navigator.serviceWorker
+    .getRegistrations()
+    .then(function (registrations) {
+      return Promise.all(
+        registrations.map(function (registration) {
+          return registration.unregister();
+        })
+      );
+    })
+    .catch(function () {})
+    .then(function () {
+      clearTimeout(timer);
+      go();
+    });
+})();

client/public/registerSW.js

@@ -0,0 +1,18 @@
+// Registers the service worker, as vite-plugin-pwa's own registerSW.js does; this
+// file in public/ takes its place. Not while the app's sign-in runs in this browser
+// (src/native/browserSignInFlag.ts): a tab still open on an older TREK keeps that
+// version's worker alive, and registering now would bring it back to answer the
+// sign-in's next page with an app that has no handoff page.
+(function () {
+  if (!('serviceWorker' in navigator)) return;
+  try {
+    var started = Number(localStorage.getItem('trek_native_signin'));
+    var age = Date.now() - started;
+    if (started > 0 && age >= 0 && age < 15 * 60 * 1000) return;
+  } catch (e) {
+    /* site data blocked: register as usual */
+  }
+  window.addEventListener('load', function () {
+    navigator.serviceWorker.register('/sw.js', { scope: '/' });
+  });
+})();

client/scripts/lib/precompress.mjs

@@ -0,0 +1,60 @@
+/*
+ * The work behind scripts/precompress.mjs: a Brotli copy (<file>.br) beside every
+ * compressible build file under dist/assets.
+ *
+ * The server compresses a build file on every download otherwise, at the low level
+ * a request path can afford. A file under assets/ carries its content hash in its
+ * name and never changes, so it is compressed once here, at the level a build can
+ * afford, and the server hands that copy out as it is
+ * (server/src/nest/platform/precompressed-static.ts).
+ */
+import { readdirSync, readFileSync, writeFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { brotliCompressSync, constants } from 'node:zlib';
+
+/** What the server's own compression would take; fonts, images and video are compressed formats already. */
+const COMPRESSIBLE = /\.(?:m?js|css|svg|json|wasm|html|webmanifest)$/i;
+/** The server leaves anything below 1 kB uncompressed too: the headers cost more than the saving. */
+export const MIN_BYTES = 1024;
+/** Quality 11 takes about ten times as long per byte as 9, so the largest chunks get 9. */
+const BIG_BYTES = 1024 * 1024;
+
+function* walk(dir) {
+  for (const entry of readdirSync(dir, { withFileTypes: true })) {
+    const full = join(dir, entry.name);
+    if (entry.isDirectory()) yield* walk(full);
+    else yield full;
+  }
+}
+
+/**
+ * Writes the .br copies under `dir` and returns what it did. A copy that would not be
+ * smaller than its file is not written, and a directory that does not exist is no work.
+ */
+export function precompress(dir) {
+  const result = { files: 0, before: 0, after: 0 };
+  let files;
+  try {
+    files = [...walk(dir)];
+  } catch (err) {
+    if (err.code === 'ENOENT') return result;
+    throw err;
+  }
+  for (const file of files) {
+    if (!COMPRESSIBLE.test(file)) continue;
+    const input = readFileSync(file);
+    if (input.length < MIN_BYTES) continue;
+    const output = brotliCompressSync(input, {
+      params: {
+        [constants.BROTLI_PARAM_QUALITY]: input.length > BIG_BYTES ? 9 : 11,
+        [constants.BROTLI_PARAM_SIZE_HINT]: input.length,
+      },
+    });
+    if (output.length >= input.length) continue;
+    writeFileSync(`${file}.br`, output);
+    result.files += 1;
+    result.before += input.length;
+    result.after += output.length;
+  }
+  return result;
+}

client/scripts/precompress.mjs

@@ -0,0 +1,12 @@
+#!/usr/bin/env node
+/*
+ * postbuild: writes a Brotli copy beside every compressible file under dist/assets,
+ * which the server hands to a browser that accepts Brotli instead of compressing
+ * the file again on each download. scripts/lib/precompress.mjs holds the work.
+ */
+import { fileURLToPath } from 'node:url';
+import { precompress } from './lib/precompress.mjs';
+
+const { files, before, after } = precompress(fileURLToPath(new URL('../dist/assets', import.meta.url)));
+const mb = (bytes) => (bytes / 1048576).toFixed(1);
+console.log(`precompress: ${files} files, ${mb(before)} MB -> ${mb(after)} MB (brotli)`);

client/scripts/size-baseline.json

@@ -10,7 +10,7 @@
   "src/components/Map/MapViewGL.tsx": 2126,
   "src/components/Planner/DayDetailPanel.test.tsx": 2333,
   "src/components/Planner/DayPlanSidebar.test.tsx": 5349,
-  "src/components/Planner/DayPlanSidebar.tsx": 2929,
+  "src/components/Planner/DayPlanSidebar.tsx": 2910,
   "src/components/Planner/PlaceFormModal.test.tsx": 2836,
   "src/components/Planner/PlaceInspector.tsx": 1287,
   "src/components/Studio/TravelElements.tsx": 1559,
@@ -18,7 +18,7 @@
   "src/index.css": 1636,
   "src/mobile/screens/admin/MAdminPluginsPanel.tsx": 1506,
   "src/pages/JourneyDetailPage.test.tsx": 4028,
-  "src/pages/LoginPage.tsx": 1347,
+  "src/pages/LoginPage.tsx": 1294,
   "src/pages/TripPlannerPage.tsx": 1128,
   "src/pages/atlas/useAtlas.ts": 1207,
   "src/pages/tripPlanner/useTripPlanner.roadtrip.test.tsx": 3518,

client/scripts/strict-baseline.json

@@ -42,12 +42,11 @@
   "src/components/Map/MapViewGL.tsx": 1,
   "src/components/Map/ReservationOverlay.test.tsx": 1,
   "src/components/Map/transitGeometry.ts": 1,
-  "src/components/Map/useDawarichTrailGL.test.ts": 4,
   "src/components/Map/useMarkerThumbs.ts": 1,
   "src/components/PDF/TripPDF.tsx": 40,
   "src/components/Packing/PackingListPanelItemRow.test.tsx": 2,
   "src/components/Planner/DayPlanSidebar.constants.ts": 1,
-  "src/components/Planner/DayPlanSidebar.tsx": 61,
+  "src/components/Planner/DayPlanSidebar.tsx": 52,
   "src/components/Planner/DayPlanSidebarNoteModal.test.tsx": 1,
   "src/components/Planner/PlaceFormModal.test.tsx": 3,
   "src/components/Planner/PlaceFormModal.tsx": 1,

client/scripts/theme-baseline.json

@@ -294,7 +294,7 @@
   "pages/JourneyDetailPage.tsx": 53,
   "pages/JourneyPage.tsx": 64,
   "pages/JourneyPublicPage.tsx": 113,
-  "pages/LoginPage.tsx": 58,
+  "pages/LoginPage.tsx": 54,
   "pages/OAuthAuthorizePage.tsx": 33,
   "pages/PluginPage.tsx": 1,
   "pages/ResetPasswordPage.tsx": 23,
@@ -302,6 +302,7 @@
   "pages/VacayPage.tsx": 13,
   "pages/atlas/useAtlas.ts": 2,
   "pages/collections/useCollections.ts": 1,
+  "pages/login/MfaCodeStep.tsx": 4,
   "pages/sharedTrip/SharedChrome.tsx": 2,
   "pages/sharedTrip/SharedMap.tsx": 1,
   "pages/tripPlanner/ListsContainer.tsx": 1,

client/scripts/theme-disable-baseline.json

@@ -20,6 +20,7 @@
   "components/Map/DawarichTrailLayer.tsx": 1,
   "components/Map/dawarichTrail.ts": 10,
   "components/Map/markerLook.ts": 1,
+  "components/Map/poiCategories.ts": 2,
   "components/Map/useDawarichTrailGL.ts": 1,
   "components/Packing/PackingBringersCard.tsx": 1,
   "components/Planner/DayReorderPopup.tsx": 1,

client/src/api/client.ts

@@ -145,7 +145,7 @@ apiClient.interceptors.request.use(
 )
 
 export function isAuthPublicPath(pathname: string): boolean {
-  const publicPaths = ['/login', '/register', '/forgot-password', '/reset-password']
+  const publicPaths = ['/login', '/register', '/forgot-password', '/reset-password', '/native-handoff']
   const publicPrefixes = ['/shared/', '/public/']
   return publicPaths.includes(pathname) || publicPrefixes.some((p) => pathname.startsWith(p))
 }

client/src/components/Admin/useAdminUserActions.test.ts

@@ -3,10 +3,15 @@ import { beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { useAdminUserActions } from './useAdminUserActions';
 
-// FE-HOOK-ADMUSERACT-001 to FE-HOOK-ADMUSERACT-007
+// FE-HOOK-ADMUSERACT-001 to FE-HOOK-ADMUSERACT-009
 
-const api = vi.hoisted(() => ({ rotateJwtSecret: vi.fn(), resetUserPasskeys: vi.fn(), resetUserMfa: vi.fn() }));
-vi.mock('../../api/client', () => ({ adminApi: api }));
+const api = vi.hoisted(() => ({
+  rotateJwtSecret: vi.fn(),
+  resetUserPasskeys: vi.fn(),
+  resetUserMfa: vi.fn(),
+}));
+const http = vi.hoisted(() => ({ delete: vi.fn() }));
+vi.mock('../../api/client', () => ({ adminApi: api, apiClient: http }));
 
 const t = (key: string, params?: Record<string, unknown>) => (params ? `${key} ${JSON.stringify(params)}` : key);
 
@@ -28,6 +33,7 @@ beforeEach(() => {
   api.rotateJwtSecret.mockReset().mockResolvedValue({});
   api.resetUserPasskeys.mockReset().mockResolvedValue({ deleted: 2 });
   api.resetUserMfa.mockReset().mockResolvedValue({ success: true });
+  http.delete.mockReset().mockResolvedValue({ data: { success: true, unlinked: true } });
 });
 
 describe('useAdminUserActions', () => {
@@ -101,4 +107,26 @@ describe('useAdminUserActions', () => {
     expect(admin.toast.error).toHaveBeenCalledWith('common.error');
     expect(ok).toBe(false);
   });
+
+  it('FE-HOOK-ADMUSERACT-008: removing the SSO link calls the API, toasts and reports success', async () => {
+    const { admin, actions } = mount();
+    let ok: boolean | undefined;
+    await act(async () => {
+      ok = await actions.unlinkSso({ id: 11 });
+    });
+    expect(http.delete).toHaveBeenCalledWith('/admin/users/11/sso');
+    expect(admin.toast.success).toHaveBeenCalledWith('admin.sso.unlinkDone');
+    expect(ok).toBe(true);
+  });
+
+  it('FE-HOOK-ADMUSERACT-009: a failed SSO unlink toasts and reports failure', async () => {
+    http.delete.mockRejectedValue(new Error('x'));
+    const { admin, actions } = mount();
+    let ok: boolean | undefined;
+    await act(async () => {
+      ok = await actions.unlinkSso({ id: 11 });
+    });
+    expect(admin.toast.error).toHaveBeenCalledWith('common.error');
+    expect(ok).toBe(false);
+  });
 });

client/src/components/Admin/useAdminUserActions.ts

@@ -1,4 +1,4 @@
-import { adminApi } from '../../api/client';
+import { adminApi, apiClient } from '../../api/client';
 import type { TranslationFn } from '../../types';
 
 interface UserActionsHost {
@@ -12,8 +12,8 @@ interface UserActionsHost {
 /**
  * The irreversible user actions behind the admin dialogs and their phone sheets:
  * rotating the JWT secret, which signs everyone out including the admin, removing a
- * user's passkeys and switching off a user's two-factor login. Each shell keeps its own
- * confirm step and busy state around them.
+ * user's passkeys, switching off a user's two-factor login and removing a user's SSO
+ * link. Each shell keeps its own confirm step and busy state around them.
  */
 export function useAdminUserActions(admin: UserActionsHost, t: TranslationFn) {
   const { toast, setRotatingJwt, setShowRotateJwtModal, logout, navigate } = admin;
@@ -55,5 +55,17 @@ export function useAdminUserActions(admin: UserActionsHost, t: TranslationFn) {
     }
   };
 
-  return { rotateJwt, resetPasskeys, resetMfa };
+  /** Forgets the user's SSO identity so the next SSO sign-in links again (#3065); true when it worked. */
+  const unlinkSso = async (user: { id: number }): Promise<boolean> => {
+    try {
+      await apiClient.delete(`/admin/users/${user.id}/sso`);
+      toast.success(t('admin.sso.unlinkDone'));
+      return true;
+    } catch {
+      toast.error(t('common.error'));
+      return false;
+    }
+  };
+
+  return { rotateJwt, resetPasskeys, resetMfa, unlinkSso };
 }

client/src/components/Layout/NativeWidgetsSync.tsx

@@ -20,6 +20,7 @@ import { widgetCover, widgetWeather } from '../../native/widgetMedia';
 import { atlasSummary, collabSummary, packingDetail, type WidgetAtlas } from '../../native/widgetOnline';
 import {
   buildSnapshot,
+  liveDayDue,
   pickTrip,
   publishWidgets,
   todayOf,
@@ -207,9 +208,10 @@ export default function NativeWidgetsSync(): null {
         });
       }
       if (cancelled) return;
-      const live = main.day
-        ? tripDayState(main.day, now.getHours() * 60 + now.getMinutes(), t('native.widget.dayDone'))
-        : null;
+      // The Live Activity from three hours before the day's first timed stop, not all day long.
+      const minutes = now.getHours() * 60 + now.getMinutes();
+      const live =
+        main.day && liveDayDue(main.day, minutes) ? tripDayState(main.day, minutes, t('native.widget.dayDone')) : null;
       await publishWidgets(main.snapshot, live, choices);
       await publishToWatch(hero, main, today);
     };

client/src/components/Map/DawarichTrailLayer.test.tsx

@@ -122,8 +122,8 @@ describe('DawarichTrailLayer', () => {
 
     const [casing, line] = lines()
     expect(casing.getAttribute('data-pane')).toBe('trek-track-casing')
-    expect(casing.getAttribute('data-weight')).toBe('6')
-    expect(casing.getAttribute('data-opacity')).toBe('0.55')
+    expect(casing.getAttribute('data-weight')).toBe('7')
+    expect(casing.getAttribute('data-opacity')).toBe('0.9')
 
     // Only the casing takes the pane; the coloured line is left in Leaflet's
     // default overlay pane. Pinned as the fact it is rather than as a rule:
@@ -131,8 +131,9 @@ describe('DawarichTrailLayer', () => {
     // it, so the recorded line currently draws over the plan while the GL twin
     // puts both of its layers under it.
     expect(line.getAttribute('data-pane')).toBe('')
-    expect(line.getAttribute('data-weight')).toBe('3')
-    expect(line.getAttribute('data-dash')).toBe('6 5')
+    // Full colour, wide and long-dashed, so it reads on a busy street map.
+    expect(line.getAttribute('data-weight')).toBe('4')
+    expect(line.getAttribute('data-dash')).toBe('10 5')
     expect(line.getAttribute('data-points')).toBe(JSON.stringify([[48.2, 16.37], [48.21, 16.38]]))
 
     expect(lines().every(el => el.getAttribute('data-interactive') === 'false')).toBe(true)

client/src/components/Map/DawarichTrailLayer.tsx

@@ -5,6 +5,7 @@ import { frameLine } from '../../utils/lngFrame'
 import type { DawarichTrack } from '@trek/shared'
 import {
   DAWARICH_TRAIL_CASING,
+  DAWARICH_TRAIL_STROKE,
   trailSegments,
   type DawarichTrailSegment,
 } from './dawarichTrail'
@@ -55,8 +56,8 @@ export default function DawarichTrailLayer({
           // theme-lint-disable — map paint
           pathOptions={{
             color: DAWARICH_TRAIL_CASING,
-            weight: 6,
-            opacity: 0.55,
+            weight: DAWARICH_TRAIL_STROKE.casingWidth,
+            opacity: DAWARICH_TRAIL_STROKE.casingOpacity,
             lineCap: 'round',
             lineJoin: 'round',
           }}
@@ -72,9 +73,9 @@ export default function DawarichTrailLayer({
           positions={segment.points}
           pathOptions={{
             color: segment.color,
-            weight: 3,
-            opacity: 0.85,
-            dashArray: '6 5',
+            weight: DAWARICH_TRAIL_STROKE.width,
+            opacity: DAWARICH_TRAIL_STROKE.opacity,
+            dashArray: DAWARICH_TRAIL_STROKE.dashLeaflet,
             lineCap: 'round',
             lineJoin: 'round',
           }}

client/src/components/Map/dawarichTrail.ts

@@ -27,6 +27,22 @@ export const DAWARICH_TRAIL_COLOR = '#2563EB' // theme-lint-disable — map pain
 /** The white casing under the line, so it stays visible over a satellite tile. */
 export const DAWARICH_TRAIL_CASING = '#FFFFFF' // theme-lint-disable — map paint
 
+/**
+ * How the recorded route is stroked, shared by the Leaflet and GL layers. A
+ * thin, translucent dash over a nearly opaque white casing read as a pale
+ * lavender trace on a busy street map and was barely visible (TestFlight
+ * feedback, 5.1.3). Full colour, a wider line and longer dashes keep it
+ * readable; the dash still tells it apart from the planned route.
+ */
+export const DAWARICH_TRAIL_STROKE = {
+  casingWidth: 7,
+  casingOpacity: 0.9,
+  width: 4,
+  opacity: 1,
+  dashLeaflet: '10 5',
+  dashGL: [2.5, 1.25] as [number, number],
+} as const
+
 /**
  * Per-day hues, cycled.
  *

client/src/components/Map/poiCategories.ts

@@ -1,4 +1,4 @@
-import { Utensils, Coffee, Wine, BedDouble, Camera, Landmark, Trees, Ticket, Fuel, Zap, ParkingSquare, Tent, Binoculars, Mountain, Warehouse, Droplet, Toilet, Sandwich, Anchor, Sailboat, Wrench, Store, BatteryCharging, type LucideIcon } from 'lucide-react'
+import { Utensils, Coffee, Wine, BedDouble, Camera, Landmark, Trees, Ticket, Fuel, Zap, ParkingSquare, Tent, Binoculars, Mountain, Warehouse, Droplet, Toilet, Sandwich, Anchor, Sailboat, Wrench, Store, BatteryCharging, Croissant, ShoppingBasket, type LucideIcon } from 'lucide-react'
 import type { TourPoiCategory } from '@trek/shared'
 import { parsePluginPoiCategoryKey, type PluginPoiDetail } from '@trek/shared'
 // The road-trip kinds take their colour from the one place that defines it, so the
@@ -29,6 +29,9 @@ export const POI_CATEGORIES: PoiCategory[] = [
   { key: 'museum', labelKey: 'poi.cat.museums', Icon: Landmark, color: '#6366F1' },
   { key: 'nature', labelKey: 'poi.cat.nature', Icon: Trees, color: '#16A34A' },
   { key: 'activity', labelKey: 'poi.cat.activities', Icon: Ticket, color: '#F59E0B' },
+  // Where to stock up: the bread for the day, and a supermarket or village shop.
+  { key: 'bakery', labelKey: 'poi.cat.bakeries', Icon: Croissant, color: '#D97706' }, // theme-lint-disable: marker and pill paint, as the core pins above
+  { key: 'supermarket', labelKey: 'poi.cat.groceries', Icon: ShoppingBasket, color: '#0D9488' }, // theme-lint-disable: marker and pill paint, as the core pins above
 ]
 
 /**
@@ -70,6 +73,9 @@ export const TOUR_POI_LOOKS: Record<TourPoiCategory, PoiCategory> = {
   market: { key: 'market', labelKey: 'tours.poi.cat.market', Icon: Store, color: coreColor('shopping') },
   // BIK-07: the road trip's charging colour, so a charger reads as one on every map.
   ebike_charging: { key: 'ebike_charging', labelKey: 'tours.poi.cat.ebike_charging', Icon: BatteryCharging, color: SERVICE_COLORS.charging },
+  // Resupply on a multi-day hike, in the explore pill's own looks.
+  bakery: { key: 'bakery', labelKey: 'tours.poi.cat.bakery', Icon: Croissant, color: coreColor('bakery') },
+  supermarket: { key: 'supermarket', labelKey: 'tours.poi.cat.supermarket', Icon: ShoppingBasket, color: coreColor('supermarket') },
 }
 
 // A Map rather than an object, so a category named after an Object.prototype member

client/src/components/Map/useDawarichTrailGL.test.ts

@@ -180,16 +180,23 @@ describe('useDawarichTrailGL', () => {
     expect(gl.spies.addSource).toHaveBeenCalledWith(SOURCE, expect.objectContaining({ type: 'geojson' }))
 
     const [casingCall, lineCall] = gl.spies.addLayer.mock.calls
-    expect(casingCall[0].id).toBe(CASING_LAYER)
-    expect(casingCall[0].paint['line-color']).toBe(DAWARICH_TRAIL_CASING)
-    expect(casingCall[0].paint['line-width']).toBe(6)
-    expect(lineCall[0].id).toBe(LINE_LAYER)
+    if (!casingCall || !lineCall) throw new Error('expected the casing and the line layer')
+    type LayerSpec = { id: string; paint: Record<string, unknown> }
+    const casing = casingCall[0] as LayerSpec
+    const line = lineCall[0] as LayerSpec
+    expect(casing.id).toBe(CASING_LAYER)
+    expect(casing.paint['line-color']).toBe(DAWARICH_TRAIL_CASING)
+    expect(casing.paint['line-width']).toBe(7)
+    expect(casing.paint['line-opacity']).toBe(0.9)
+    expect(line.id).toBe(LINE_LAYER)
     // Per-feature colour, with the casing white as the fallback a feature
     // without one falls back to. The GPX layer uses the same shape.
-    expect(lineCall[0].paint['line-color']).toEqual(['coalesce', ['get', 'color'], DAWARICH_TRAIL_CASING])
+    expect(line.paint['line-color']).toEqual(['coalesce', ['get', 'color'], DAWARICH_TRAIL_CASING])
     // Dashed, so the recording is distinguishable from the planned route for
     // someone who cannot tell the two hues apart.
-    expect(lineCall[0].paint['line-dasharray']).toEqual([2, 1.6])
+    expect(line.paint['line-dasharray']).toEqual([2.5, 1.25])
+    expect(line.paint['line-width']).toBe(4)
+    expect(line.paint['line-opacity']).toBe(1)
 
     // Both go beneath the planned route's casing. The line is inserted second
     // and therefore ends up above its own casing and still below the plan.

client/src/components/Map/useDawarichTrailGL.ts

@@ -2,7 +2,7 @@ import { useEffect } from 'react'
 import type { Map } from 'mapbox-gl'
 import type { GeoJSONSource } from 'mapbox-gl'
 import type { DawarichTrack } from '@trek/shared'
-import { DAWARICH_TRAIL_CASING, trailGeoJson, trailSegments } from './dawarichTrail'
+import { DAWARICH_TRAIL_CASING, DAWARICH_TRAIL_STROKE, trailGeoJson, trailSegments } from './dawarichTrail'
 
 /**
  * The recorded route on the GL renderer — the imperative twin of
@@ -67,7 +67,11 @@ export function useDawarichTrailGL(
           source: SOURCE,
           layout: { 'line-cap': 'round', 'line-join': 'round' },
           // theme-lint-disable — map paint
-          paint: { 'line-color': DAWARICH_TRAIL_CASING, 'line-width': 6, 'line-opacity': 0.55 },
+          paint: {
+            'line-color': DAWARICH_TRAIL_CASING,
+            'line-width': DAWARICH_TRAIL_STROKE.casingWidth,
+            'line-opacity': DAWARICH_TRAIL_STROKE.casingOpacity,
+          },
         },
         anchor,
       )
@@ -81,11 +85,11 @@ export function useDawarichTrailGL(
             // Per-day colour off the feature, with the same fallback the GPX
             // layer uses when a feature somehow carries none.
             'line-color': ['coalesce', ['get', 'color'], DAWARICH_TRAIL_CASING],
-            'line-width': 3,
-            'line-opacity': 0.85,
+            'line-width': DAWARICH_TRAIL_STROKE.width,
+            'line-opacity': DAWARICH_TRAIL_STROKE.opacity,
             // Dashed, so the recording is distinguishable from the planned
             // route without relying on colour alone.
-            'line-dasharray': [2, 1.6],
+            'line-dasharray': [...DAWARICH_TRAIL_STROKE.dashGL],
           },
         },
         anchor,

client/src/components/Packing/PackingListPanelWeightInput.test.tsx

@@ -5,7 +5,7 @@ import { fireEvent, render, screen, waitFor } from '../../../tests/helpers/rende
 import { WeightInput } from './PackingListPanelWeightInput';
 
 /** A row whose stored weight changes only once a save answers, as the store does. */
-function SlowRow({ onSave }: { onSave: (grams: number | null) => void }) {
+function SlowRow({ onSave, onStored }: { onSave: (grams: number | null) => void; onStored: () => void }) {
   const [stored, setStored] = useState<number | null>(null);
   return (
     <WeightInput
@@ -13,7 +13,10 @@ function SlowRow({ onSave }: { onSave: (grams: number | null) => void }) {
       width={36}
       onSave={(grams) => {
         onSave(grams);
-        setTimeout(() => setStored(grams), 300);
+        setTimeout(() => {
+          setStored(grams);
+          onStored();
+        }, 300);
       }}
     />
   );
@@ -22,7 +25,8 @@ function SlowRow({ onSave }: { onSave: (grams: number | null) => void }) {
 describe('WeightInput', () => {
   it('FE-COMP-PACKING-095: #3005 keeps every typed digit and saves the whole weight once', async () => {
     const onSave = vi.fn();
-    render(<SlowRow onSave={onSave} />);
+    const onStored = vi.fn();
+    render(<SlowRow onSave={onSave} onStored={onStored} />);
     const input = screen.getByRole('textbox') as HTMLInputElement;
 
     fireEvent.focus(input);
@@ -35,7 +39,9 @@ describe('WeightInput', () => {
     fireEvent.blur(input);
     expect(onSave).toHaveBeenCalledTimes(1);
     expect(onSave).toHaveBeenCalledWith(250);
-    await waitFor(() => expect(input.value).toBe('250'));
+    // Wait for the save to answer, so its update lands while the test still runs.
+    await waitFor(() => expect(onStored).toHaveBeenCalled());
+    expect(input.value).toBe('250');
   });
 
   it('FE-COMP-PACKING-096: saves on Enter and stores an empty field as no weight', () => {

client/src/components/Planner/DayPlanSidebar.dragData.test.tsx

@@ -254,3 +254,57 @@ describe('DayPlanSidebar timed booking drop', () => {
     expect(onReorder).toHaveBeenCalledWith(10, [11, 12, 13, 14]);
   });
 });
+
+// #3041: Firefox sends dragstart while it handles the mouse move that starts the
+// drag, and delivers that move to the page right after. Taken as "the drag is over",
+// it dropped the drag data at pick-up, so a stop could only be moved by its arrows,
+// and the day list played its enter animation again.
+describe('DayPlanSidebar drag in Firefox', () => {
+  const renderDay = () => {
+    const day = buildDay({ id: 10, date: '2025-06-01', title: 'Day 1' });
+    const stops = [buildPlace({ id: 1, name: 'Breakfast' }), buildPlace({ id: 2, name: 'Museum' })];
+    const assignments = {
+      '10': stops.map((place, i) => buildAssignment({ id: 11 + i, day_id: 10, order_index: i, place })),
+    };
+    const onReorder = vi.fn(async () => undefined);
+    const view = render(
+      <DayPlanSidebar {...makeDefaultProps({ days: [day], places: stops, assignments, onReorder })} />
+    );
+    const row = (text: string) => screen.getByText(text).closest('[draggable="true"]') as HTMLElement;
+    const list = view.container.querySelector('.scroll-container') as HTMLElement;
+    return { onReorder, row, list };
+  };
+  const dataTransfer = () => ({ setData: vi.fn(), effectAllowed: '', getData: vi.fn(() => '') });
+
+  it('FE-PLANNER-DAYPLAN-239: the mouse move that starts a drag, with the button still held, keeps the drag', async () => {
+    const { onReorder, row } = renderDay();
+    fireEvent.dragStart(row('Museum'), { dataTransfer: dataTransfer() });
+    // Firefox order: dragstart first, then the move that triggered it. The touch
+    // polyfill on hybrid laptops sends the same held-button moves throughout a drag.
+    fireEvent.mouseMove(document, { buttons: 1 });
+    expect(row('Museum').style.opacity).toBe('0.4');
+    fireEvent.dragOver(row('Breakfast'), { dataTransfer: dataTransfer() });
+    expect(row('Breakfast').style.borderTop).toContain('2px');
+    fireEvent.drop(row('Breakfast'), { dataTransfer: dataTransfer() });
+    await waitFor(() => expect(onReorder).toHaveBeenCalledWith(10, [12, 11]));
+  });
+
+  it('FE-PLANNER-DAYPLAN-240: a plain mouse move after a drag that never ended still clears it', () => {
+    const { row } = renderDay();
+    fireEvent.dragStart(row('Museum'), { dataTransfer: dataTransfer() });
+    fireEvent.dragOver(row('Breakfast'), { dataTransfer: dataTransfer() });
+    fireEvent.mouseMove(document, { buttons: 0 });
+    expect(row('Museum').style.opacity).toBe('1');
+    expect(row('Breakfast').style.borderTop).toBe('');
+  });
+
+  it('FE-PLANNER-DAYPLAN-241: the day list plays its enter animation once, not again when a drag ends', () => {
+    const { row, list } = renderDay();
+    expect(list.classList.contains('trek-stagger')).toBe(true);
+    fireEvent.dragStart(row('Museum'), { dataTransfer: dataTransfer() });
+    expect(list.classList.contains('trek-stagger')).toBe(false);
+    fireEvent.dragEnd(row('Museum'));
+    expect(row('Museum').style.opacity).toBe('1');
+    expect(list.classList.contains('trek-stagger')).toBe(false);
+  });
+});

client/src/components/Planner/DayPlanSidebar.tsx

@@ -10,6 +10,7 @@ import { safeHttpUrl } from '../../utils/safeUrl'
 import { ChevronDown, ChevronRight, ChevronUp, Compass, RotateCcw, ExternalLink, Pencil, GripVertical, Ticket, Plus, FileText, Trash2, Car, Lock, Hotel, Eraser, Route as RouteIcon, RouteOff, Bookmark, StickyNote, TramFront, Zap, MapPin, Globe } from 'lucide-react'
 import type { PlannedTransitLeg } from './transitLeg'
 import { useTransitLegPlanner } from './useTransitLegPlanner'
+import { useDayPlanDragState } from './useDayPlanDragState'
 import { WalkLateLine } from '../Tours/walk/WalkTransitNote'
 import { TourOverrunLine } from '../Tours/TourDayTimeParts'
 import { dayItemOverrun } from '../Tours/tourDayTime'
@@ -246,12 +247,7 @@ function useDayPlanSidebar(props: DayPlanSidebarProps) {
   // distances refresh instead of showing stale cached text (#1300).
   const distanceUnit = useSettingsStore(s => s.settings.distance_unit)
   const legsAbortRef = useRef<AbortController | null>(null)
-  const [draggingId, setDraggingId] = useState(null)
   const [lockedIds, setLockedIds] = useState(new Set())
-  const [dropTargetKey, _setDropTargetKey] = useState(null)
-  const dropTargetRef = useRef(null)
-  const setDropTargetKey = (key) => { dropTargetRef.current = key; _setDropTargetKey(key) }
-  const [dragOverDayId, setDragOverDayId] = useState(null)
   const [transportDetail, setTransportDetail] = useState(null)
   const [transportPosVersion, setTransportPosVersion] = useState(0)
 
@@ -268,6 +264,9 @@ function useDayPlanSidebar(props: DayPlanSidebarProps) {
     fromType?: string; toType?: string; toId?: number; insertAfter?: boolean; toLegIndex?: number | null;
   } | null>(null)
   const dragDataRef = useRef(null)
+  const {
+    draggingId, setDraggingId, hasDragged, dropTargetKey, dropTargetRef, setDropTargetKey, dragOverDayId, setDragOverDayId,
+  } = useDayPlanDragState(dragDataRef)
   const scrollContainerRef = useRef<HTMLDivElement | null>(null)
   const dayRefs = useRef<Map<number, HTMLElement>>(new Map())
 
@@ -374,28 +373,7 @@ function useDayPlanSidebar(props: DayPlanSidebarProps) {
     }
     document.addEventListener('dragend', cleanup)
     return () => document.removeEventListener('dragend', cleanup)
-  }, [])
-
-  // A drag whose source row re-rendered away never sends its dragend to the
-  // document, and the drop line then stayed on a row until the next reload. The
-  // browser sends no mousemove during a drag, so the first plain mouse move or
-  // press after one means it is over.
-  useEffect(() => {
-    if (!draggingId && !dropTargetKey && !dragOverDayId) return
-    const settle = () => {
-      setDraggingId(null)
-      setDropTargetKey(null)
-      setDragOverDayId(null)
-      dragDataRef.current = null
-      window.__dragData = null
-    }
-    document.addEventListener('mousemove', settle)
-    document.addEventListener('pointerdown', settle, true)
-    return () => {
-      document.removeEventListener('mousemove', settle)
-      document.removeEventListener('pointerdown', settle, true)
-    }
-  }, [draggingId, dropTargetKey, dragOverDayId])
+  }, [setDraggingId, setDropTargetKey, setDragOverDayId])
 
   // Initialize missing transport positions outside of render to avoid setState-during-render
   // eslint-disable-next-line react-hooks/exhaustive-deps
@@ -1148,6 +1126,7 @@ function useDayPlanSidebar(props: DayPlanSidebarProps) {
     hotelLegs,
     draggingId,
     setDraggingId,
+    hasDragged,
     lockedIds,
     dropTargetKey,
     dropTargetRef,
@@ -1316,6 +1295,7 @@ const DayPlanSidebar = React.memo(function DayPlanSidebar(props: DayPlanSidebarP
     hotelLegs,
     draggingId,
     setDraggingId,
+    hasDragged,
     lockedIds,
     dropTargetKey,
     dropTargetRef,
@@ -1476,7 +1456,7 @@ const DayPlanSidebar = React.memo(function DayPlanSidebar(props: DayPlanSidebarP
       />
 
       {/* Tagesliste */}
-      <div className={`scroll-container flex flex-col gap-2 p-2${draggingId ? '' : ' trek-stagger'}`} style={{ flex: 1, overflowY: 'auto', minHeight: 0 }} ref={scrollContainerRef} onScroll={(e) => onScrollTopChange?.((e.currentTarget as HTMLElement).scrollTop)}>
+      <div className={`scroll-container flex flex-col gap-2 p-2${hasDragged ? '' : ' trek-stagger'}`} style={{ flex: 1, overflowY: 'auto', minHeight: 0 }} ref={scrollContainerRef} onScroll={(e) => onScrollTopChange?.((e.currentTarget as HTMLElement).scrollTop)}>
         {days.map((day, index) => {
           const isSelected = selectedDayId === day.id
           // Shared by the click and the key handler so the two can never drift

client/src/components/Planner/ReservationModal.test.tsx

@@ -1,4 +1,4 @@
-// FE-PLANNER-RESMODAL-001 to FE-PLANNER-RESMODAL-109
+// FE-PLANNER-RESMODAL-001 to FE-PLANNER-RESMODAL-110
 import { render, screen, waitFor, fireEvent, within, act } from '../../../tests/helpers/render';
 import userEvent from '@testing-library/user-event';
 import { http, HttpResponse } from 'msw';
@@ -1829,4 +1829,13 @@ describe('ReservationModal', () => {
       expect(onSave.mock.calls[0][0].confirmation_number).toBe('PNR-NEW');
     });
   });
+
+  it('FE-PLANNER-RESMODAL-110: a refresh of the trip while the dialog is open keeps what the user typed (#3069)', async () => {
+    const { rerender } = render(<ReservationModal {...defaultProps} />);
+    const title = screen.getByPlaceholderText(/e\.g\. Lufthansa/i) as HTMLInputElement;
+    await userEvent.type(title, 'Le Jules Verne');
+    // A socket reconnect re-reads the trip: days, places and stays arrive as new arrays.
+    rerender(<ReservationModal {...defaultProps} days={[]} places={[]} accommodations={[]} />);
+    expect(title).toHaveValue('Le Jules Verne');
+  });
 });

client/src/components/Planner/ReservationModal.tsx

@@ -132,8 +132,12 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
       setForm({ ...EMPTY_FORM, assignment_id: defaultAssignmentId ?? '' })
       setPendingFiles([])
     }
+    // Keyed only on what opens a different form. Days, places and stays are read
+    // when the form is seeded; a refresh of the trip while the dialog is open (a
+    // socket reconnect re-reads it) hands in new arrays of the same data and must
+    // not reseed it and wipe what the user is typing (#3069).
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [reservation, prefill, isOpen, selectedDayId, defaultAssignmentId, days, places, accommodations])
+  }, [reservation, prefill, isOpen, selectedDayId, defaultAssignmentId])
 
   const handleSubmit = async (e?: { preventDefault?: () => void }) => {
     e?.preventDefault?.()

client/src/components/Planner/TransportModal.test.tsx

@@ -1,4 +1,4 @@
-// FE-PLANNER-TRANSMODAL-001 to FE-PLANNER-TRANSMODAL-083
+// FE-PLANNER-TRANSMODAL-001 to FE-PLANNER-TRANSMODAL-085
 import { render, screen, waitFor, fireEvent, within, act } from '../../../tests/helpers/render';
 import userEvent from '@testing-library/user-event';
 import { http, HttpResponse } from 'msw';
@@ -18,6 +18,7 @@ import {
   buildAssignment,
   buildReservation,
   buildTripFile,
+  buildBudgetItem,
 } from '../../../tests/helpers/factories';
 import { TransportModal } from './TransportModal';
 import type { Day, Reservation } from '../../types';
@@ -1725,4 +1726,22 @@ describe('TransportModal', () => {
     const legs = onSave.mock.calls[0][0].metadata.legs as { confirmation_number?: string }[];
     expect(legs.map(l => l.confirmation_number ?? null)).toEqual([null, 'SEG-TWO']);
   });
+
+  it('FE-PLANNER-TRANSMODAL-084: a store refresh while the dialog is open keeps what the user typed (#3069)', async () => {
+    render(<TransportModal {...defaultProps} />);
+    const title = screen.getByPlaceholderText(/e\.g\. Lufthansa/i) as HTMLInputElement;
+    await userEvent.type(title, 'LH 400');
+    // A socket reconnect re-reads the trip: the costs arrive as a new array.
+    act(() => { useTripStore.setState({ budgetItems: [buildBudgetItem()] }); });
+    expect(title).toHaveValue('LH 400');
+  });
+
+  it('FE-PLANNER-TRANSMODAL-085: opening a different transport still fills the form with it', () => {
+    const first = buildReservation({ title: 'First flight', type: 'flight' });
+    const second = buildReservation({ title: 'Second flight', type: 'flight' });
+    const { rerender } = render(<TransportModal {...defaultProps} reservation={first} />);
+    expect(screen.getByDisplayValue('First flight')).toBeInTheDocument();
+    rerender(<TransportModal {...defaultProps} reservation={second} />);
+    expect(screen.getByDisplayValue('Second flight')).toBeInTheDocument();
+  });
 });

client/src/components/Planner/TransportModal.tsx

@@ -135,7 +135,10 @@ export function TransportModal({ isOpen, onClose, onSave, reservation, days, sel
         meta_seat: meta.seat || '',
       }),
     })
-  }, [isOpen, reservation, prefill, selectedDayId, budgetItems])
+    // Keyed only on what opens a different form. A store refresh while the dialog
+    // is open (a socket reconnect re-reads the trip, a fellow traveller's cost) must
+    // not reseed it and wipe what the user is typing (#3069).
+  }, [isOpen, reservation, prefill, selectedDayId])
 
   const handleSubmit = async (e?: React.FormEvent) => {
     e?.preventDefault()

client/src/components/Planner/bookings/bookingFacts.test.ts

@@ -1,4 +1,4 @@
-// FE-PLANNER-BKFACTS-001 to FE-PLANNER-BKFACTS-022
+// FE-PLANNER-BKFACTS-001 to FE-PLANNER-BKFACTS-024
 import { describe, it, expect } from 'vitest';
 import { buildDay, buildReservation } from '../../../../tests/helpers/factories';
 import type { ReservationEndpoint } from '../../../types';
@@ -83,6 +83,26 @@ describe('bookingFacts: day', () => {
   });
 });
 
+describe('bookingFacts: hotel times', () => {
+  it('FE-PLANNER-BKFACTS-023: a hotel without times of its own shows the stay check-in and check-out', () => {
+    const f = bookingFacts(buildReservation({
+      type: 'hotel', accommodation_start_day_id: 701, accommodation_end_day_id: 702,
+      accommodation_check_in: '15:00', accommodation_check_in_end: '18:00', accommodation_check_out: '11:00',
+    }), ctx());
+    expect(cell(f, 'reservations.meta.checkIn')).toBe('15:00 → 18:00');
+    expect(cell(f, 'reservations.meta.checkOut')).toBe('11:00');
+  });
+
+  it('FE-PLANNER-BKFACTS-024: the booking own times win over the stay times', () => {
+    const f = bookingFacts(buildReservation({
+      type: 'hotel', metadata: JSON.stringify({ check_in_time: '14:00', check_out_time: '10:00' }),
+      accommodation_check_in: '15:00', accommodation_check_in_end: '18:00', accommodation_check_out: '11:00',
+    }), ctx());
+    expect(cell(f, 'reservations.meta.checkIn')).toBe('14:00');
+    expect(cell(f, 'reservations.meta.checkOut')).toBe('10:00');
+  });
+});
+
 describe('bookingFacts: time', () => {
   it('FE-PLANNER-BKFACTS-008: start and end time with an arrow', () => {
     const f = bookingFacts(buildReservation({ reservation_time: '2025-06-01T09:05', reservation_end_time: '2025-06-01T11:30' }), ctx());

client/src/components/Planner/bookings/bookingFacts.ts

@@ -2,7 +2,7 @@ import type { Day, Reservation, ReservationEndpoint } from '../../../types'
 import { formatPriceText, formatTime, splitReservationDateTime } from '../../../utils/formatters'
 import { getFlightLegs, getTrainLegs, usesStationRoute } from '../../../utils/flightLegs'
 import { safeExternalHref } from '../../../utils/safeUrl'
-import { daySpan, parseMeta, type AssignmentLookupEntry } from './bookingsModel'
+import { daySpan, hotelStayTimes, parseMeta, type AssignmentLookupEntry } from './bookingsModel'
 
 export interface FactsContext {
   t: (key: string, params?: Record<string, string | number>) => string
@@ -105,10 +105,11 @@ export function bookingFacts(r: Reservation, c: FactsContext): BookingFacts {
   if (!c.hasLinkedCost && meta.price != null && meta.price !== '') {
     cells.push({ label: t('reservations.price'), value: formatPriceText(meta.price, meta.priceCurrency, c.tripCurrency, locale) })
   }
-  if (meta.check_in_time) {
-    cells.push({ label: t('reservations.meta.checkIn'), value: formatTime(meta.check_in_time, locale, timeFormat) + (meta.check_in_end_time ? ` → ${formatTime(meta.check_in_end_time, locale, timeFormat)}` : '') })
+  const stay = hotelStayTimes(r, meta)
+  if (stay.checkIn) {
+    cells.push({ label: t('reservations.meta.checkIn'), value: formatTime(stay.checkIn, locale, timeFormat) + (stay.checkInEnd ? ` → ${formatTime(stay.checkInEnd, locale, timeFormat)}` : '') })
   }
-  if (meta.check_out_time) cells.push({ label: t('reservations.meta.checkOut'), value: formatTime(meta.check_out_time, locale, timeFormat) })
+  if (stay.checkOut) cells.push({ label: t('reservations.meta.checkOut'), value: formatTime(stay.checkOut, locale, timeFormat) })
 
   // Per-segment codes (#1943), only on a real stopover booking.
   const legs = r.type === 'flight' ? getFlightLegs(r) : usesStationRoute(r.type) ? getTrainLegs(r) : []

client/src/components/Planner/bookings/bookingsModel.ts

@@ -103,6 +103,27 @@ export interface DaySpan {
 }
 
 /** The days a booking sits on. A hotel reads its stay from the accommodation, which is the source of truth for the range (#1383). */
+/**
+ * A hotel's check-in window and check-out: the booking's own metadata first,
+ * then the stay it is linked to. Times often live only on the stay, and the
+ * edit form already falls back the same way (reservationFormModel.ts).
+ */
+export function hotelStayTimes(
+  r: Reservation,
+  meta: { check_in_time?: string | null; check_in_end_time?: string | null; check_out_time?: string | null },
+): { checkIn: string | null; checkInEnd: string | null; checkOut: string | null } {
+  if (r.type !== 'hotel') {
+    return { checkIn: meta.check_in_time || null, checkInEnd: meta.check_in_end_time || null, checkOut: meta.check_out_time || null }
+  }
+  const checkIn = meta.check_in_time || r.accommodation_check_in || null
+  return {
+    checkIn,
+    // A window end belongs to the check-in it came with.
+    checkInEnd: meta.check_in_time ? meta.check_in_end_time || null : checkIn ? r.accommodation_check_in_end || null : null,
+    checkOut: meta.check_out_time || r.accommodation_check_out || null,
+  }
+}
+
 export function daySpan(r: Reservation, days: Day[]): DaySpan {
   const byId = (id?: number | null) => (id != null ? days.find(d => d.id === id) : undefined)
   if (r.type === 'hotel' && (r.accommodation_start_day_id || r.accommodation_end_day_id)) {

client/src/components/Planner/transportEndpoints.test.ts

@@ -1,4 +1,4 @@
-// FE-PLANNER-TRANSPORTEP-001 to -021: the transport booking form both the desktop
+// FE-PLANNER-TRANSPORTEP-001 to -022: the transport booking form both the desktop
 // TransportModal and the phone's transport sheet save through.
 import { describe, expect, it } from 'vitest';
 
@@ -499,6 +499,28 @@ describe('buildTransportPayload', () => {
     expect(payload.reservation_time).toBeNull();
   });
 
+  it('FE-PLANNER-TRANSPORTEP-022: a flight without airports keeps its day, times and flight details on save (#3070)', () => {
+    const payload = buildTransportPayload(
+      draft({
+        form: { ...EMPTY_TRANSPORT_FIELDS, title: 'Fly', type: 'flight', notes: 'only the notes changed' },
+        waypoints: [
+          { ...emptyWaypoint(1), depTime: '09:40', airline: 'Lufthansa', flight_number: 'LH 400', seat: '12A' },
+          { ...emptyWaypoint(2), arrTime: '11:30' },
+        ],
+      }),
+      days,
+      DESKTOP_SAVE
+    );
+    expect(payload).toMatchObject({
+      day_id: 1,
+      end_day_id: 2,
+      reservation_time: '2026-05-01T09:40',
+      reservation_end_time: '2026-05-02T11:30',
+      endpoints: [],
+    });
+    expect(payload.metadata).toEqual({ airline: 'Lufthansa', flight_number: 'LH 400', seat: '12A' });
+  });
+
   it('FE-PLANNER-TRANSPORTEP-017: the desktop anchors a train on its raw rows, the phone on the picked stations', () => {
     const station = (name: string) => ({ name, lat: 1, lng: 1 });
     const trainWaypoints = [

client/src/components/Planner/transportEndpoints.ts

@@ -548,8 +548,12 @@ export function buildTransportPayload(
   const dayDate = (id: string | number): string | null => days.find((d) => d.id === Number(id))?.date ?? null;
   // Flight route as an ordered list of airports (origin .. stops .. destination).
   const flightWps = form.type === 'flight' ? waypoints.filter((w) => w.airport) : [];
-  const firstWp = flightWps[0];
-  const lastWp = flightWps[flightWps.length - 1];
+  // A flight without a single airport (one created over MCP with a day and times
+  // but no endpoints) takes its day, times, airline and seat from the raw rows, as
+  // a train without stations does; otherwise a save wiped them (#3070).
+  const flightAnchors = flightWps.length > 0 || form.type !== 'flight' ? flightWps : waypoints;
+  const firstWp = flightAnchors[0];
+  const lastWp = flightAnchors[flightAnchors.length - 1];
   // Only geocoded stations become map endpoints and legs.
   const trainWps = stationRoute ? trainWaypoints : [];
   const trainStations = trainWps.filter((w) => w.location);

client/src/components/Planner/useDayPlanDragState.ts

@@ -0,0 +1,69 @@
+import { useCallback, useEffect, useRef, useState, type MutableRefObject } from 'react';
+
+/** A stop's or a day's id, as the day plan's drag handlers pass them around. */
+type DragKey = string | number | null;
+
+/**
+ * The drag state of the day plan (DayPlanSidebar): what is being dragged, which
+ * row the drop line stands on, which day the drag is over, and whether a drag
+ * happened yet.
+ *
+ * The day list fades in once, on mount. Switching its stagger back on when a
+ * drag ended played that entrance again on every drop, so the first drag turns
+ * it off for good (#3041).
+ *
+ * A drag whose source row re-rendered away never sends its dragend to the
+ * document, and the drop line then stayed on a row until the next reload. The
+ * browser sends no mousemove during a drag, so the first plain mouse move or
+ * press after one means it is over. Plain means no button held: Firefox fires
+ * dragstart while it handles the move that starts the drag and hands that move
+ * to the page afterwards, button still down. Read as the end, it threw the drag
+ * away at pick-up and left only the arrows to reorder a day (#3041).
+ */
+export function useDayPlanDragState(dragDataRef: MutableRefObject<unknown>) {
+  const [draggingId, setDraggingIdState] = useState<DragKey>(null);
+  const [hasDragged, setHasDragged] = useState(false);
+  const [dropTargetKey, setDropTargetKeyState] = useState<string | null>(null);
+  const dropTargetRef = useRef<string | null>(null);
+  const [dragOverDayId, setDragOverDayId] = useState<DragKey>(null);
+
+  // Stable, so the sidebar's listeners that call them are set up once.
+  const setDraggingId = useCallback((id: DragKey) => {
+    if (id != null) setHasDragged(true);
+    setDraggingIdState(id);
+  }, []);
+  const setDropTargetKey = useCallback((key: string | null) => {
+    dropTargetRef.current = key;
+    setDropTargetKeyState(key);
+  }, []);
+
+  useEffect(() => {
+    if (!draggingId && !dropTargetKey && !dragOverDayId) return;
+    const settle = (e: MouseEvent | PointerEvent) => {
+      if (e.type === 'mousemove' && e.buttons !== 0) return;
+      setDraggingIdState(null);
+      dropTargetRef.current = null;
+      setDropTargetKeyState(null);
+      setDragOverDayId(null);
+      dragDataRef.current = null;
+      window.__dragData = null;
+    };
+    document.addEventListener('mousemove', settle);
+    document.addEventListener('pointerdown', settle, true);
+    return () => {
+      document.removeEventListener('mousemove', settle);
+      document.removeEventListener('pointerdown', settle, true);
+    };
+  }, [draggingId, dropTargetKey, dragOverDayId, dragDataRef]);
+
+  return {
+    draggingId,
+    setDraggingId,
+    hasDragged,
+    dropTargetKey,
+    dropTargetRef,
+    setDropTargetKey,
+    dragOverDayId,
+    setDragOverDayId,
+  };
+}

client/src/components/shared/categoryIcons.ts

@@ -8,7 +8,7 @@ import {
   Globe, Compass, Flag, Navigation, Map,
   Church, Library, Store, Home, Cross,
   Heart, Star, CreditCard, Wifi,
-  Luggage, Backpack, Zap,
+  Luggage, Backpack, Zap, Croissant, ShoppingBasket,
   LucideIcon,
 } from 'lucide-react'
 
@@ -22,7 +22,7 @@ export const CATEGORY_ICON_MAP: Record<string, LucideIcon> = {
   Globe, Compass, Flag, Navigation, Map,
   Church, Library, Store, Home, Cross,
   Heart, Star, CreditCard, Wifi,
-  Luggage, Backpack, Zap,
+  Luggage, Backpack, Zap, Croissant, ShoppingBasket,
 }
 
 export const ICON_LABELS: Record<string, string> = {
@@ -37,6 +37,7 @@ export const ICON_LABELS: Record<string, string> = {
   Church: 'Church', Library: 'Museum', Store: 'Market', Home: 'Accommodation', Cross: 'Medicine',
   Heart: 'Favorite', Star: 'Top', CreditCard: 'Bank', Wifi: 'Internet',
   Luggage: 'Luggage', Backpack: 'Backpack', Zap: 'Adventure',
+  Croissant: 'Bakery', ShoppingBasket: 'Groceries',
 }
 
 export function getCategoryIcon(iconName: string | null | undefined): LucideIcon {

client/src/mobile/components/MDayPager.test.tsx

@@ -8,6 +8,7 @@ import { pagesFor } from './dayPagerPages';
 vi.mock('../../native/haptics', () => ({ tickHaptic: vi.fn() }));
 
 const DAYS = [{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }, { id: 5 }, { id: 6 }] as unknown as Day[];
+const LONG = Array.from({ length: 10 }, (_, k) => ({ id: k + 1 })) as unknown as Day[];
 
 function setup(selectedDayId: number | null, over: Partial<Parameters<typeof MDayPager>[0]> = {}) {
   const onSelectDay = vi.fn();
@@ -39,19 +40,37 @@ beforeEach(() => {
 });
 
 describe('pagesFor', () => {
-  it('windows the selection with two days on either side, room for a second swipe', () => {
-    expect(pagesFor(DAYS, 3).map((p) => [p.dayId, p.active])).toEqual([
-      [1, false],
-      [2, false],
-      [3, true],
-      [4, false],
-      [5, false],
+  it('has a page for every day and draws the selection with two days on either side', () => {
+    expect(pagesFor(DAYS, 3).map((p) => [p.dayId, p.active, p.near])).toEqual([
+      [1, false, true],
+      [2, false, true],
+      [3, true, true],
+      [4, false, true],
+      [5, false, true],
+      [6, false, false],
     ]);
   });
 
-  it('has no page beyond the first and last day', () => {
-    expect(pagesFor(DAYS, 1).map((p) => p.dayId)).toEqual([1, 2, 3]);
-    expect(pagesFor(DAYS, 6).map((p) => p.dayId)).toEqual([4, 5, 6]);
+  it('keeps the same pages whichever day is selected, so a run of swipes never meets an end', () => {
+    expect(pagesFor(DAYS, 1).map((p) => p.key)).toEqual(pagesFor(DAYS, 6).map((p) => p.key));
+    expect(
+      pagesFor(DAYS, 6)
+        .filter((p) => p.near)
+        .map((p) => p.dayId)
+    ).toEqual([4, 5, 6]);
+  });
+
+  it('also draws the days around the page a swipe heads for, so a run of swipes never meets blank pages', () => {
+    const drawn = (focusDayId: number | null) =>
+      pagesFor(LONG, 1, focusDayId)
+        .filter((p) => p.near)
+        .map((p) => p.dayId);
+    expect(drawn(6)).toEqual([1, 2, 3, 4, 5, 6, 7, 8]);
+    // Still only the selection's own window where nothing is previewed or the preview is gone.
+    expect(drawn(null)).toEqual([1, 2, 3]);
+    expect(drawn(99)).toEqual([1, 2, 3]);
+    // The focus never changes which page is current.
+    expect(pagesFor(LONG, 1, 6).find((p) => p.active)?.dayId).toBe(1);
   });
 
   it('keeps a page for a selection that points at no day, with the first day as the way back', () => {
@@ -69,7 +88,9 @@ describe('MDayPager', () => {
 
     expect(screen.getByText('page 2 live')).toBeInTheDocument();
     const pages = Array.from(strip.children) as HTMLElement[];
-    expect(pages.map((p) => p.hasAttribute('inert'))).toEqual([true, false, true, true]);
+    expect(pages.map((p) => p.hasAttribute('inert'))).toEqual([true, false, true, true, true, true]);
+    // Day 6 is three away: its page is there to swipe onto, its content is not drawn yet.
+    expect(screen.queryByText('page 6')).not.toBeInTheDocument();
     expect(pages[0]).toHaveAttribute('aria-hidden', 'true');
     expect(pages[1]).not.toHaveAttribute('aria-hidden');
   });
@@ -122,6 +143,19 @@ describe('MDayPager', () => {
     expect(onPreview).toHaveBeenLastCalledWith(null);
   });
 
+  it('draws the days ahead of a swipe while the strip still moves, before the selection lands', () => {
+    const { strip, onSelectDay } = setup(1);
+    expect(screen.queryByText('page 5')).not.toBeInTheDocument();
+
+    place(strip, 3, true);
+    fireEvent.scroll(strip);
+
+    expect(onSelectDay).not.toHaveBeenCalled();
+    expect(screen.getByText('page 1 live')).toBeInTheDocument();
+    expect(screen.getByText('page 5')).toBeInTheDocument();
+    expect(screen.queryByText('page 6')).not.toBeInTheDocument();
+  });
+
   it('asks once, however many events report the same landing', () => {
     const { strip, onSelectDay } = setup(2);
 
@@ -166,7 +200,7 @@ describe('MDayPager', () => {
     }
   });
 
-  it('puts the strip back on the current page when the window moves', () => {
+  it('puts the strip on the current page when the selection moves', () => {
     const { strip, rerender, onSelectDay } = setup(2);
     // jsdom keeps no scroll offset, so give the strip one to move.
     let scrollLeft = 0;
@@ -199,6 +233,39 @@ describe('MDayPager', () => {
     expect(strip.scrollLeft).toBe(390);
   });
 
+  it('moves the strip to a day tapped inside the same window, as on a two-day trip', () => {
+    const twoDays = DAYS.slice(0, 2);
+    const { strip, rerender, onSelectDay } = setup(1, { days: twoDays });
+    let scrollLeft = 0;
+    Object.defineProperty(strip, 'scrollLeft', {
+      configurable: true,
+      get: () => scrollLeft,
+      set: (v) => {
+        scrollLeft = v;
+      },
+    });
+    // Both days are in the window either way; only the current page changes.
+    const realQuery = strip.querySelector.bind(strip);
+    vi.spyOn(strip, 'querySelector').mockImplementation((sel: string) => {
+      const el = realQuery(sel) as HTMLElement | null;
+      if (el && sel === '[data-page-active]') el.getBoundingClientRect = () => ({ left: 390 }) as DOMRect;
+      return el;
+    });
+    strip.getBoundingClientRect = () => ({ left: 0 }) as DOMRect;
+
+    rerender(
+      <MDayPager
+        days={twoDays}
+        selectedDayId={2}
+        onSelectDay={onSelectDay}
+        describeDay={() => ''}
+        renderDay={(dayId) => <p>{`page ${dayId}`}</p>}
+      />
+    );
+
+    expect(strip.scrollLeft).toBe(390);
+  });
+
   it('holds still while locked', () => {
     const { strip } = setup(2, { locked: true });
     expect(strip).toHaveClass('overflow-x-hidden');

client/src/mobile/components/MDayPager.tsx

@@ -4,11 +4,11 @@ import { tickHaptic } from '../../native/haptics';
 import { pagesFor, type PagerItem } from './dayPagerPages';
 
 /**
- * Pages through the trip's days the way a native pager does: the current day
- * and two on either side sit side by side in a horizontal scroll-snap strip
- * (dayPagerPages.ts), so the finger drags real paper, the neighbour slides in
- * with it, and a second swipe made while the first still snaps carries on to
- * the day after. The browser's compositor owns the gesture. Momentum, rubber-banding at the first
+ * Pages through the trip's days the way a native pager does: every day is a
+ * page of a horizontal scroll-snap strip (dayPagerPages.ts), the current one
+ * and two on either side drawn, so the finger drags real paper, the neighbour
+ * slides in with it, and swipes made while the last one still snaps carry on
+ * as far as the trip goes. The browser's compositor owns the gesture. Momentum, rubber-banding at the first
  * and last day, axis locking against the vertical scroll and the swallowed tap
  * after a swipe are all the platform's own, in the PWA and the app alike.
  *
@@ -16,8 +16,10 @@ import { pagesFor, type PagerItem } from './dayPagerPages';
  * the swipe is decided, not once the snap has settled, which on iOS comes
  * a good while later. The day only changes once the strip has come to rest on
  * another page. Then
- * the selection moves, the window of three shifts by one and the strip is put
- * back on the centre page before the next paint, so nothing visibly jumps.
+ * the selection moves and the days around it draw their content. The days
+ * around the page a swipe is heading for draw theirs as soon as it becomes the
+ * nearer one, so a run of quick swipes that never rests finds them drawn
+ * instead of blank until the snap lands (#3067).
  * Keys follow the day ids, so the page that slid in keeps its state (scroll
  * position, fetched route and weather) as it becomes the current one.
  *
@@ -70,8 +72,14 @@ export default function MDayPager({
 }: MDayPagerProps) {
   const stripRef = useRef<HTMLDivElement>(null);
   const [announcement, setAnnouncement] = useState('');
-  const pages = pagesFor(days, selectedDayId);
-  const windowKey = pages.map((p) => p.key).join(',');
+  /** The page a swipe last headed for. It stays after the landing, so swiping
+   *  back over the same days finds them drawn too. */
+  const [focusDayId, setFocusDayId] = useState<number | null>(null);
+  const pages = pagesFor(days, selectedDayId, focusDayId);
+  // Which page is current belongs in the key: on a trip of up to five days a
+  // chip tap can keep the same pages, and the strip then stayed on the old day
+  // while the rail already showed the new one.
+  const windowKey = pages.map((p) => (p.active ? `*${p.key}` : p.key)).join(',');
 
   // The handlers below are attached once, so they read the props through here.
   const latest = useRef({ days, onSelectDay, describeDay, selectedDayId, onPreview });
@@ -91,7 +99,7 @@ export default function MDayPager({
     if (Math.abs(offset) > 0.5) strip.scrollLeft += offset;
   }, []);
 
-  // Before paint whenever the window moves: a landed swipe or a chip tap.
+  // Before paint whenever the window or its current page moves: a landed swipe or a chip tap.
   useLayoutEffect(() => {
     requested.current = null;
     recentre();
@@ -133,7 +141,11 @@ export default function MDayPager({
       const next = dayId != null && Number.isFinite(dayId) ? dayId : null;
       if (next === previewed) return;
       previewed = next;
-      if (next !== null) tickHaptic();
+      if (next !== null) {
+        // Draw ahead of the finger: the days around this one, before it lands.
+        setFocusDayId(next);
+        tickHaptic();
+      }
       latest.current.onPreview?.(next);
     };
 
@@ -212,7 +224,7 @@ export default function MDayPager({
             aria-hidden={page.active ? undefined : true}
             className={`relative w-full flex-none snap-center snap-always ${inFlow ? '' : 'h-full'}`}
           >
-            {renderDay(page.dayId, page.active)}
+            {page.near ? renderDay(page.dayId, page.active) : null}
           </div>
         ))}
       </div>

client/src/mobile/components/MPushPrompt.test.tsx

@@ -46,10 +46,12 @@ describe('MPushPrompt', () => {
   it('FE-MOB-PUSHPROMPT-001: a moment after signing in the app asks, and turning it on goes the settings card way', async () => {
     await renderAndWait();
     expect(screen.getByText('Turn on notifications?')).toBeInTheDocument();
-    expect(window.localStorage.getItem(PUSH_PROMPT_KEY)).not.toBeNull();
+    // Asked once answered, not once shown.
+    expect(window.localStorage.getItem(PUSH_PROMPT_KEY)).toBeNull();
 
     fireEvent.click(screen.getByRole('button', { name: 'Turn on' }));
     expect(env.toggle).toHaveBeenCalledTimes(1);
+    expect(window.localStorage.getItem(PUSH_PROMPT_KEY)).not.toBeNull();
     expect(screen.queryByText('Turn on notifications?')).not.toBeInTheDocument();
   });
 
@@ -77,6 +79,18 @@ describe('MPushPrompt', () => {
     expect(window.localStorage.getItem(PUSH_PROMPT_KEY)).toBeNull();
   });
 
+  it('FE-MOB-PUSHPROMPT-005: a prompt left unanswered asks again on the next launch', async () => {
+    const first = render(<MPushPrompt />);
+    await act(async () => {
+      await vi.advanceTimersByTimeAsync(PUSH_PROMPT_DELAY_MS);
+    });
+    expect(screen.getByText('Turn on notifications?')).toBeInTheDocument();
+    first.unmount();
+
+    await renderAndWait();
+    expect(screen.getByText('Turn on notifications?')).toBeInTheDocument();
+  });
+
   it('FE-MOB-PUSHPROMPT-004: signed out, it waits', async () => {
     useAuthStore.setState({ isAuthenticated: false } as never);
     await renderAndWait();

client/src/mobile/components/MPushPrompt.tsx

@@ -2,6 +2,7 @@ import { BellRing } from 'lucide-react';
 import React, { useEffect, useState } from 'react';
 import { useWebPush } from '../../hooks/useWebPush';
 import { useTranslation } from '../../i18n';
+import { useNativeCapabilities } from '../../native/capabilities';
 import { nativePushActive, nativePushEndpoint } from '../../native/push';
 import { pushChannelOffered } from '../../push/webPush';
 import { useAuthStore } from '../../store/authStore';
@@ -36,9 +37,14 @@ function rememberAsked(): void {
  * server offers push, and only while this device is not signed up yet. Turning
  * it on goes the way the settings' push card goes (useWebPush), which brings up
  * the system's question.
+ *
+ * It counts as asked once the user answers it, not when it opens: a sheet that
+ * went under another one, or an app closed while it was up, asks again. And it
+ * waits for the app's capabilities, which can arrive after the sign-in.
  */
 export default function MPushPrompt(): React.ReactElement | null {
   const signedIn = useAuthStore((s) => s.isAuthenticated);
+  const { caps } = useNativeCapabilities();
   const [open, setOpen] = useState(false);
 
   useEffect(() => {
@@ -46,8 +52,7 @@ export default function MPushPrompt(): React.ReactElement | null {
     let cancelled = false;
     const timer = window.setTimeout(() => {
       void pushChannelOffered().then((offered) => {
-        if (cancelled || !offered || nativePushEndpoint()) return;
-        rememberAsked();
+        if (cancelled || !offered || nativePushEndpoint() || alreadyAsked()) return;
         setOpen(true);
       });
     }, PUSH_PROMPT_DELAY_MS);
@@ -55,9 +60,13 @@ export default function MPushPrompt(): React.ReactElement | null {
       cancelled = true;
       window.clearTimeout(timer);
     };
-  }, [signedIn]);
+  }, [signedIn, caps]);
 
-  return open ? <PushPromptSheet onClose={() => setOpen(false)} /> : null;
+  const answered = () => {
+    rememberAsked();
+    setOpen(false);
+  };
+  return open ? <PushPromptSheet onClose={answered} /> : null;
 }
 
 function PushPromptSheet({ onClose }: { onClose: () => void }): React.ReactElement {

client/src/mobile/components/MSectionNav.tsx

@@ -6,6 +6,11 @@ export interface MSection {
   id: string;
   label: string;
   icon: LucideIcon;
+  /**
+   * The heading the section stands under. Consecutive sections with the same
+   * group share one heading; a screen whose sections name none shows none.
+   */
+  group?: string;
 }
 
 interface MSectionRowProps {
@@ -33,6 +38,50 @@ export function MSectionRow({ section, active, current = false, onPick }: MSecti
   );
 }
 
+/**
+ * The sections in order, each run of one group under its heading: the same list
+ * in the dropdown of a phone and in the list beside the page.
+ */
+export function MSectionList({
+  sections,
+  activeId,
+  markCurrent = false,
+  onPick,
+}: {
+  sections: MSection[];
+  activeId: string;
+  /** Marks the active row as the page on show (the list beside the page). */
+  markCurrent?: boolean;
+  onPick: (id: string) => void;
+}) {
+  return (
+    <>
+      {sections.map((section, i) => {
+        const heading = section.group && section.group !== sections[i - 1]?.group ? section.group : null;
+        return (
+          <div key={section.id} role="presentation">
+            {heading && (
+              <div
+                className={`px-[10px] pb-1 font-geist text-caption font-bold uppercase tracking-[.09em] text-m-faint ${
+                  i === 0 ? 'pt-1' : 'pt-3'
+                }`}
+              >
+                {heading}
+              </div>
+            )}
+            <MSectionRow
+              section={section}
+              active={section.id === activeId}
+              current={markCurrent && section.id === activeId}
+              onPick={() => onPick(section.id)}
+            />
+          </div>
+        );
+      })}
+    </>
+  );
+}
+
 /**
  * The frame of a settings-like screen (settings, administration), one rule for
  * both: the page column on a phone, a centred column on a wide window, and from
@@ -88,15 +137,7 @@ export default function MSectionNav({
         <span className="min-w-0 flex-1 truncate text-subtitle font-bold text-m-ink">{title}</span>
       </div>
       {action && <div className="mb-1 px-[4px]">{action}</div>}
-      {sections.map((section) => (
-        <MSectionRow
-          key={section.id}
-          section={section}
-          active={section.id === activeId}
-          current={section.id === activeId}
-          onPick={() => onPick(section.id)}
-        />
-      ))}
+      <MSectionList sections={sections} activeId={activeId} markCurrent onPick={onPick} />
     </nav>
   );
 }

client/src/mobile/components/MSheet.tsx

@@ -154,6 +154,9 @@ const SHORT_FORM_SHAPE = 'm-form-sheet short:flex-1 short:border-b-0 short:[--m-
 // behind read through as sharp ghost text: the frosting it counted on is
 // dropped whenever an ancestor animates its opacity (the scrim fading in),
 // which WebKit and Chromium both do, so the fields floated over the list behind.
+// For the same reason the dim fades on a layer of its own, beside the sheet and
+// not around it: opacity multiplies down the tree, so a fading parent made even
+// the opaque sheet see-through for its first frames.
 const SURFACE = 'bg-[color:var(--m-sheetop)] border border-[color:var(--m-shbr)]'
 
 // The docked sheet rises from below the screen edge like a native sheet; the
@@ -283,12 +286,17 @@ export default function MSheet({
     // has to fall back to document.body (sheet mounted in the same commit as
     // the shell).
     <div
-      className={`m-root fixed inset-0 z-[60] ${dimTransparent ? 'bg-transparent short:bg-[color:var(--m-dim)]' : 'bg-[color:var(--m-dim)]'} ${open ? 'm-fade-in' : 'm-fade-out'}`}
+      className="m-root fixed inset-0 z-[60]"
       role="presentation"
       onClick={(e) => {
         if (e.target === e.currentTarget) requestClose()
       }}
     >
+      <div
+        aria-hidden="true"
+        data-m-scrim=""
+        className={`pointer-events-none absolute inset-0 ${dimTransparent ? 'bg-transparent short:bg-[color:var(--m-dim)]' : 'bg-[color:var(--m-dim)]'} ${open ? 'm-fade-in' : 'm-fade-out'}`}
+      />
       <div className={regionClass(variant, wideAnchor, form)}>
         <div className={boxClass(variant, wideWidth, form)}>
           <PopoverArrow variant={variant} anchor={wideAnchor} />

client/src/mobile/components/MSwipeRow.test.tsx

@@ -35,8 +35,8 @@ function setup() {
 describe('MSwipeRow', () => {
   it('FE-MOB-SWIPE-001: shows no action buttons until the row is swiped', () => {
     setup();
-    expect(screen.queryByText('Delete')).toBeNull();
-    expect(screen.queryByText('Done')).toBeNull();
+    expect(screen.queryByLabelText('Delete')).toBeNull();
+    expect(screen.queryByLabelText('Done')).toBeNull();
   });
 
   it('FE-MOB-SWIPE-002: a swipe towards the start opens the trailing action, a tap on it runs it', () => {
@@ -45,7 +45,7 @@ describe('MSwipeRow', () => {
     touch(row, 'touchmove', 160);
     touch(row, 'touchmove', 120);
     touch(row, 'touchend');
-    fireEvent.click(screen.getByText('Delete'));
+    fireEvent.click(screen.getByLabelText('Delete'));
     expect(onDelete).toHaveBeenCalledOnce();
   });
 
@@ -54,7 +54,7 @@ describe('MSwipeRow', () => {
     touch(row, 'touchstart', 200, 100);
     touch(row, 'touchmove', 190, 160);
     touch(row, 'touchend');
-    expect(screen.queryByText('Delete')).toBeNull();
+    expect(screen.queryByLabelText('Delete')).toBeNull();
   });
 
   it('FE-MOB-SWIPE-004: a tap on an open row closes it instead of opening the row', () => {
@@ -72,7 +72,7 @@ describe('MSwipeRow', () => {
     touch(row, 'touchstart', 10);
     touch(row, 'touchmove', 120);
     touch(row, 'touchend');
-    expect(screen.queryByText('Done')).toBeNull();
+    expect(screen.queryByLabelText('Done')).toBeNull();
   });
 
   it('FE-MOB-SWIPE-006: swiped through past most of the row, the first action runs at once', () => {

client/src/mobile/components/MSwipeRow.tsx

@@ -34,10 +34,18 @@ interface MSwipeRowProps {
   className?: string;
   /** The row's own background: it covers the buttons until the row moves, so it must match what is around it. */
   surface?: string;
+  /**
+   * How far the buttons sit in from the row's top and bottom edge. A row that is a
+   * card of its own leaves it at 0, so the buttons are as tall as the card; a row
+   * inside a grouped card insets them, so they do not touch its dividers.
+   */
+  inset?: number;
   children: ReactNode;
 }
 
-const BUTTON_W = 76;
+/** One button, and the gap before it: the buttons are cards of their own beside the row. */
+const BUTTON_W = 70;
+const GAP = 6;
 const EDGE_PX = 24;
 const CLAIM_PX = 10;
 const AXIS_BIAS = 1.5;
@@ -59,6 +67,7 @@ export default function MSwipeRow({
   disabled = false,
   className = '',
   surface = 'bg-[color:var(--m-card)]',
+  inset = 0,
   children,
 }: MSwipeRowProps) {
   const rowRef = useRef<HTMLDivElement>(null);
@@ -91,7 +100,11 @@ export default function MSwipeRow({
     // Positive offset reveals the leading side in LTR; RTL mirrors it.
     const leadSign = () => (rtl() ? -1 : 1);
     const openWidth = (which: 'leading' | 'trailing') =>
-      which === 'leading' ? (latest.current.leading ? BUTTON_W : 0) : latest.current.trailing.length * BUTTON_W;
+      which === 'leading'
+        ? latest.current.leading
+          ? BUTTON_W + GAP
+          : 0
+        : latest.current.trailing.length * (BUTTON_W + GAP);
 
     const close = () => {
       place(0, true);
@@ -194,17 +207,18 @@ export default function MSwipeRow({
     action.onAction();
   };
   const shown = open ?? side;
+  // The icon alone, as in Mail; the label names the button for a screen reader.
   const button = (action: SwipeAction) => (
     <button
       key={action.label}
       type="button"
       data-swipe-action=""
       tabIndex={open ? 0 : -1}
+      aria-label={action.label}
       onClick={() => run(action)}
-      className={`flex h-full w-[76px] flex-none flex-col items-center justify-center gap-1 text-caption font-semibold ${TONE[action.tone]}`}
+      className={`flex h-full w-[70px] flex-none items-center justify-center ${inset ? 'rounded-xl' : 'rounded-2xl'} ${TONE[action.tone]}`}
     >
-      <action.icon size={18} strokeWidth={2.2} aria-hidden="true" />
-      {action.label}
+      <action.icon size={16} strokeWidth={2.2} aria-hidden="true" />
     </button>
   );
 
@@ -213,7 +227,8 @@ export default function MSwipeRow({
       {shown && (
         <div
           aria-hidden={!open}
-          className={`absolute inset-0 flex ${shown === 'leading' ? 'justify-start' : 'justify-end'}`}
+          className={`absolute inset-x-0 flex gap-[6px] ${shown === 'leading' ? 'justify-start pe-[6px]' : 'justify-end ps-[6px]'}`}
+          style={{ top: inset, bottom: inset }}
         >
           {shown === 'leading' ? leading && button(leading) : trailing.map(button)}
         </div>

client/src/mobile/components/dayPagerPages.ts

@@ -7,29 +7,37 @@ interface Page {
   key: string;
   dayId: number | null;
   active: boolean;
+  /** Drawn with its content; the pages further out are empty paper of the same width. */
+  near: boolean;
 }
 
-/**
- * Pages kept either side of the selection. Two, not one: a second swipe that
- * starts while the first is still snapping has to find a page beyond the
- * neighbour, or it runs into the end of the strip and springs back instead of
- * reaching the day after.
- */
+/** Where a day stands in the strip, -1 for none. */
+const indexOfDay = (days: PagerItem[], id: number | null): number =>
+  id == null ? -1 : days.findIndex((d) => d.id === id);
+
+/** Pages drawn with their content either side of the selection, and of the page a swipe heads for. */
 const REACH = 2;
 
-/** The window of pages around the selection. A selection that points at no
- *  day (the whole-trip view, or a day deleted remotely) still gets its page,
- *  with the first day next to it as a way back. */
-export function pagesFor(days: PagerItem[], selectedDayId: number | null): Page[] {
+/**
+ * A page for every day, so quick swipes in a row never run into the end of the
+ * strip before the first has settled (they used to spring back after two days).
+ * Only the selection and REACH days either side draw their content, and as
+ * many either side of `focusDayId`, the page a swipe is heading for: a run of
+ * quick swipes that has not landed yet then meets drawn pages instead of blank
+ * paper (#3067). Two windows at most, however long the trip. A selection
+ * that points at no day (the whole-trip view, or a day deleted remotely) still
+ * gets its page, with the first day next to it as a way back.
+ */
+export function pagesFor(days: PagerItem[], selectedDayId: number | null, focusDayId: number | null = null): Page[] {
   const i = days.findIndex((d) => d.id === selectedDayId);
   if (i < 0) {
     const first = days[0];
     return [
-      { key: 'none', dayId: selectedDayId, active: true },
-      ...(first ? [{ key: `d${first.id}`, dayId: first.id, active: false }] : []),
+      { key: 'none', dayId: selectedDayId, active: true, near: true },
+      ...(first ? [{ key: `d${first.id}`, dayId: first.id, active: false, near: true }] : []),
     ];
   }
-  return days
-    .slice(Math.max(0, i - REACH), i + REACH + 1)
-    .map((d) => ({ key: `d${d.id}`, dayId: d.id, active: d.id === days[i].id }));
+  const f = indexOfDay(days, focusDayId);
+  const near = (j: number) => Math.abs(j - i) <= REACH || (f >= 0 && Math.abs(j - f) <= REACH);
+  return days.map((d, j) => ({ key: `d${d.id}`, dayId: d.id, active: j === i, near: near(j) }));
 }

client/src/mobile/mobile.css

@@ -62,7 +62,14 @@
    * 52px/26px offsets stand in for the phone status bar / home indicator, so
    * real devices derive them from the safe-area insets. */
   --bottom-nav-h: calc(84px + env(safe-area-inset-bottom, 0px));
-  --m-safe-top: calc(env(safe-area-inset-top, 0px) + 12px);
+  /* The safe area the iOS app measures (TrekBridgeViewController
+   * publishSafeArea) is a floor under env(): where a release lays the web view
+   * out below the status bar, WebKit reports 0 while a camera in a corner still
+   * reaches into the page. In a browser the variables are unset: env() alone. */
+  --m-safe-t: max(env(safe-area-inset-top, 0px), var(--trek-native-safe-top, 0px));
+  --m-safe-l: max(env(safe-area-inset-left, 0px), var(--trek-native-safe-left, 0px));
+  --m-safe-r: max(env(safe-area-inset-right, 0px), var(--trek-native-safe-right, 0px));
+  --m-safe-top: calc(var(--m-safe-t) + 12px);
   /* The navigation rail's share of the leading edge (wide windows only), what
    * every full-width fixed bar and the page column start after. */
   --m-rail-w: 0px;
@@ -75,10 +82,10 @@
  * reads the same values as the shell. */
 html:has(.m-shell[data-size='wide'], .m-shell[data-size='split']) .m-root {
   --bottom-nav-h: env(safe-area-inset-bottom, 0px);
-  --m-rail-w: calc(env(safe-area-inset-left, 0px) + 100px);
+  --m-rail-w: calc(var(--m-safe-l) + 100px);
 }
 html[dir='rtl']:has(.m-shell[data-size='wide'], .m-shell[data-size='split']) .m-root {
-  --m-rail-w: calc(env(safe-area-inset-right, 0px) + 100px);
+  --m-rail-w: calc(var(--m-safe-r) + 100px);
 }
 
 .dark .m-root {
@@ -123,9 +130,11 @@ html[dir='rtl']:has(.m-shell[data-size='wide'], .m-shell[data-size='split']) .m-
 
 /* ── Keyframes ──────────────────────────────────────────────────────────── */
 
-/* The floating card pops in place, the way a native alert does. */
+/* The floating card pops in place, the way a native alert does. It is opaque
+   halfway through the pop, so the page behind never reads through its fields. */
 @keyframes m-sheet-in {
   from { opacity: 0; transform: translateY(10px) scale(.96); }
+  45% { opacity: 1; }
   to { opacity: 1; transform: translateY(0) scale(1); }
 }
 @keyframes m-sheet-out {
@@ -568,6 +577,17 @@ html[dir='rtl']:has(.m-shell[data-size='wide'], .m-shell[data-size='split']) .m-
   inset-inline-start: var(--m-rail-w, 0px);
   inset-inline-end: 0;
 }
+/* Without the rail the floating bars keep clear of the sides' safe area too:
+   a camera in a corner can come as a side inset. The insets are the screen's,
+   not the text direction's, so right to left takes them the other way round.
+   On a wide window the rail takes the leading side and a bar may centre itself
+   (mx-auto). */
+html:not(:has(.m-shell[data-size='wide'], .m-shell[data-size='split'])) :is(.m-bar-x, .m-span-x) {
+  margin-inline: var(--m-safe-l, 0px) var(--m-safe-r, 0px);
+}
+html[dir='rtl']:not(:has(.m-shell[data-size='wide'], .m-shell[data-size='split'])) :is(.m-bar-x, .m-span-x) {
+  margin-inline: var(--m-safe-r, 0px) var(--m-safe-l, 0px);
+}
 /* A screen whose background is a map reaches under the rail: the map runs to
    the window's edge and the rail floats over it like the top controls do. Its
    own bars then keep to the page column with m-bar-x / m-span-x. */
@@ -641,10 +661,10 @@ html:has(.m-shell) {
    does; the fixed bars stay where they are. The rule above is for the browser,
    where a pull at the top reloads an installed PWA, which the app cannot do.
    Not on Android, whose stretch scales the bars too (MainActivity turns it
-   off), not sideways, and not on a screen with pull-to-refresh, whose pull
-   WebKit's bounce would race (mobile/usePullToRefresh.ts). */
-html[data-native-ios]:not([data-pull-refresh]),
-html[data-native-ios]:not([data-pull-refresh]):has(.m-shell) {
+   off), and not sideways. A screen with pull-to-refresh bounces too; its pull
+   holds only the move down from the top (mobile/usePullToRefresh.ts). */
+html[data-native-ios],
+html[data-native-ios]:has(.m-shell) {
   overscroll-behavior-y: auto;
 }
 html:has(.m-shell) body {
@@ -664,6 +684,15 @@ html:has(.m-shell) {
 html:has(.m-shell) [data-desktop-navbar] {
   display: none;
 }
+/* A plugin's page inside the touch shell: below the status bar, above the dock,
+   after the rail, and exactly the visible height (100dvh), so the plugin's own
+   document is what scrolls instead of the app stretching past the screen. */
+html:has(.m-shell) [data-plugin-page] {
+  --plugin-page-h: calc(100dvh - var(--bottom-nav-h, 0px));
+  box-sizing: border-box;
+  padding-top: env(safe-area-inset-top, 0px);
+  padding-inline-start: var(--m-rail-w, 0px);
+}
 html:has(.m-shell) .leaflet-control-zoom {
   display: none !important;
 }

client/src/mobile/screens/settings/MSettings.tsx

@@ -12,6 +12,7 @@ import {
   Puzzle,
   Settings2,
   SlidersHorizontal,
+  Smartphone,
   User,
 } from 'lucide-react'
 import { useTranslation } from '../../../i18n'
@@ -26,8 +27,11 @@ import MSettingsIntegrations from './MSettingsIntegrations'
 import MSettingsAccount from './MSettingsAccount'
 import MSettingsAbout from './MSettingsAbout'
 import MSettingsServer from './MSettingsServer'
+import MAppLockCard from './MAppLockCard'
+import MClientCertCard from './MClientCertCard'
+import { isNativeApp } from '../../../native/platform'
 import { useIsSplit } from '../../../hooks/sizeClass'
-import MSectionNav, { MSectionRow, SECTION_SCREEN, type MSection } from '../../components/MSectionNav'
+import MSectionNav, { MSectionList, SECTION_SCREEN, type MSection } from '../../components/MSectionNav'
 
 /**
  * Mobile settings screen: back + section-switcher pill on top, the section
@@ -44,21 +48,33 @@ export default function MSettings() {
   // the page, the way Settings on an iPad does, instead of behind a dropdown.
   const split = useIsSplit()
 
+  // Two groups, so it is clear what a setting reaches: the account's settings
+  // follow the user to every device; this device's stay on it (the server the
+  // app opens, the app lock, a client certificate, the offline copy).
+  const accountGroup = t('settings.groups.account')
+  const deviceGroup = t('settings.groups.device')
+  const app = isNativeApp()
   const tabs: MSection[] = [
-    { id: 'display', label: t('settings.tabs.display'), icon: SlidersHorizontal },
-    { id: 'appearance', label: t('settings.tabs.appearance'), icon: Palette },
-    { id: 'map', label: t('settings.tabs.map'), icon: Map },
-    { id: 'notifications', label: t('settings.tabs.notifications'), icon: Bell },
-    ...(hasIntegrations ? [{ id: 'integrations', label: t('settings.tabs.integrations'), icon: Plug }] : []),
-    ...(hasPlugins && !managed ? [{ id: 'plugins', label: t('settings.tabs.plugins'), icon: Puzzle }] : []),
-    { id: 'offline', label: t('settings.tabs.offline'), icon: CloudOff },
-    { id: 'account', label: t('settings.tabs.account'), icon: User },
+    { id: 'display', label: t('settings.tabs.display'), icon: SlidersHorizontal, group: accountGroup },
+    { id: 'appearance', label: t('settings.tabs.appearance'), icon: Palette, group: accountGroup },
+    { id: 'map', label: t('settings.tabs.map'), icon: Map, group: accountGroup },
+    { id: 'notifications', label: t('settings.tabs.notifications'), icon: Bell, group: accountGroup },
+    ...(hasIntegrations
+      ? [{ id: 'integrations', label: t('settings.tabs.integrations'), icon: Plug, group: accountGroup }]
+      : []),
+    ...(hasPlugins && !managed
+      ? [{ id: 'plugins', label: t('settings.tabs.plugins'), icon: Puzzle, group: accountGroup }]
+      : []),
+    { id: 'account', label: t('settings.tabs.account'), icon: User, group: accountGroup },
+    ...(app ? [{ id: 'device', label: t('settings.tabs.device'), icon: Smartphone, group: deviceGroup }] : []),
+    { id: 'offline', label: t('settings.tabs.offline'), icon: CloudOff, group: deviceGroup },
     // Same call as the desktop page: About is about the project — what TREK is,
     // where to file a bug, where to support it — and a customer of a hosted
     // instance is the audience for none of it. The version and the source link
     // move to the footer below, because AGPL §13 wants those offered wherever
-    // people reach the software over a network.
-    ...(appVersion && !managed ? [{ id: 'about', label: t('settings.tabs.about'), icon: Info }] : []),
+    // people reach the software over a network. Under the product's name, not
+    // under either group.
+    ...(appVersion && !managed ? [{ id: 'about', label: t('settings.tabs.about'), icon: Info, group: 'TREK' }] : []),
   ]
 
   const active = tabs.find((tab) => tab.id === activeTab) || tabs[0]
@@ -105,17 +121,14 @@ export default function MSettings() {
       {/* Section dropdown, in flow (pushes the content down like the demo) */}
       {dropOpen && !split && (
         <div className="m-pop-in -mt-[6px] mb-3 rounded-2xl border border-[color:var(--m-rowbr)] bg-[color:var(--m-sheetop)] p-[6px] shadow-[0_16px_40px_-20px_rgba(0,0,0,.4)]">
-          {tabs.map((tab) => (
-            <MSectionRow
-              key={tab.id}
-              section={tab}
-              active={tab.id === active.id}
-              onPick={() => {
-                setActiveTab(tab.id)
-                setDropOpen(false)
-              }}
-            />
-          ))}
+          <MSectionList
+            sections={tabs}
+            activeId={active.id}
+            onPick={(id) => {
+              setActiveTab(id)
+              setDropOpen(false)
+            }}
+          />
         </div>
       )}
 
@@ -126,8 +139,15 @@ export default function MSettings() {
       {active.id === 'integrations' && hasIntegrations && <MSettingsIntegrations />}
       {/* Per-plugin settings still reuse the existing responsive tab. */}
       {active.id === 'plugins' && hasPlugins && !managed && <MSettingsPlugins />}
+      {/* Each card hides itself where it has nothing to offer; their own margins give way to one gap. */}
+      {active.id === 'device' && app && (
+        <div className="flex flex-col gap-3 [&>*]:m-0">
+          <MSettingsServer />
+          <MAppLockCard />
+          <MClientCertCard />
+        </div>
+      )}
       {active.id === 'offline' && <MSettingsOffline />}
-      {active.id === 'account' && <MSettingsServer />}
       {active.id === 'account' && <MSettingsAccount />}
       {active.id === 'about' && appVersion && <MSettingsAbout appVersion={appVersion} />}
 

client/src/mobile/screens/settings/MSettingsAccount.tsx

@@ -19,8 +19,6 @@ import {
 import { useTranslation } from '../../../i18n'
 import { MSetCard, MSetEyebrow, MSetInput, MSetButton, MSetHint } from './MSettingsUi'
 import MConfirmSheet from './MConfirmSheet'
-import MAppLockCard from './MAppLockCard'
-import MClientCertCard from './MClientCertCard'
 import PasswordChecklist from '../../../components/shared/PasswordChecklist'
 import { fmtDate, usePasskeys } from '../../../components/Settings/usePasskeys'
 import { stripTrailingSlashes, useAccountSettings } from '../../../components/Settings/useAccountSettings'
@@ -181,11 +179,7 @@ export default function MSettingsAccount() {
       )}
 
       {/* ── Two-factor authentication ───────────────────────────── */}
-      {/* The app lock, inside the app only (Face ID, Touch ID or the passcode). */}
-      <MAppLockCard />
-      {/* The client certificate for a server behind mutual TLS, once one is stored. */}
-      <MClientCertCard />
-
+      {/* The app lock and the client certificate belong to this device: MSettings, "This device". */}
       <MSetCard title={t('settings.mfa.title')} icon={KeyRound} className="mt-3">
         {mfaRequiredByPolicy && (
           <div className="mb-3 flex gap-2 rounded-xl border border-[color:var(--m-rowbr)] bg-[color:var(--m-ic)] p-3">

client/src/mobile/screens/trip/tabs/MBookingsTab.tsx

@@ -8,7 +8,7 @@ import { CardActions, CardDeleteSheet, CardFiles, CardNotes, CardTitleButton, Ca
 import { CardGrid, Field, ReservationPluginSlots, SectionHeader, StatusDot, TabScroller, TravelerAvatars, TravelerFilterRow } from './tabChrome'
 import { STATUS_COLOR, type MTabScreenProps } from './tabModel'
 import { cardWhen, parseTransportMeta, timeRange } from './transportsModel'
-import { BOOKING_TYPE_COLOR } from '../../../../components/Planner/bookings/bookingsModel'
+import { BOOKING_TYPE_COLOR, hotelStayTimes } from '../../../../components/Planner/bookings/bookingsModel'
 import { useReservationListFilter } from '../../../../components/Planner/bookings/useReservationListFilter'
 import { useReservationCard } from '../../../../components/Planner/bookings/useReservationCard'
 import { orderedEndpoints } from '../../../../utils/flightLegs'
@@ -119,13 +119,18 @@ function BookingCard({ res, planner, canEdit, compact, onView }: {
   if (meta.price != null && meta.price !== '') {
     metaCells.push({ label: t('reservations.price'), value: formatPriceText(meta.price, meta.priceCurrency, planner.trip?.currency, locale) })
   }
-  if (meta.check_in_time) {
-    metaCells.push({
+  const stay = hotelStayTimes(res, meta)
+  // A hotel's times are its check-in and check-out; they come first, so a price
+  // or a seat cannot push them off the card.
+  const stayCells: { label: string; value: string }[] = []
+  if (stay.checkIn) {
+    stayCells.push({
       label: t('reservations.meta.checkIn'),
-      value: timeRange(meta.check_in_time, meta.check_in_end_time ?? null, locale, timeFormat),
+      value: timeRange(stay.checkIn, stay.checkInEnd, locale, timeFormat),
     })
   }
-  if (meta.check_out_time) metaCells.push({ label: t('reservations.meta.checkOut'), value: formatTime(meta.check_out_time, locale, timeFormat) })
+  if (stay.checkOut) stayCells.push({ label: t('reservations.meta.checkOut'), value: formatTime(stay.checkOut, locale, timeFormat) })
+  metaCells.unshift(...stayCells)
 
   const files = filesFor(res, planner.files || [])
 

client/src/mobile/screens/trip/tabs/MCostsTab.tsx

@@ -15,7 +15,6 @@ import { useExpenseLinks } from '../../../../components/Budget/useExpenseLinks'
 import { finalBudgetFor, finalBudgetSources, formerParticipantRows, paidByUser, readUserNote } from '../../../../components/Budget/CostsPanel.helpers'
 import { catMeta, COST_CAT_META } from '../../../../components/Budget/costsCategories'
 import MConfirmSheet from '../../settings/MConfirmSheet'
-import MSwipeRow, { type SwipeAction } from '../../../components/MSwipeRow'
 import { CountPill, TabPanes } from './tabChrome'
 import { AddPaymentSheet, MemberAvatar } from './MCostsPayment'
 import { STATUS_COLOR, type MTabScreenProps } from './tabModel'
@@ -595,17 +594,10 @@ function ExpenseRow({ item, ctx, base, locale, t, canEdit, onEdit, onDelete, onT
   const members = item.members || []
   const note = readUserNote(item)
 
-  // A swipe offers what the buttons beside the card do; delete still asks first.
-  const swipe: SwipeAction[] = canEdit
-    ? [
-        { label: t('common.delete'), icon: Trash2, tone: 'danger', onAction: onDelete },
-        { label: t('common.edit'), icon: Pencil, tone: 'neutral', onAction: onEdit },
-      ]
-    : []
-
+  // No swipe here: edit and delete stand beside the card already, and a swipe
+  // put a second, larger pair of the same buttons next to them.
   return (
-    <MSwipeRow trailing={swipe} disabled={!canEdit} surface="bg-[color:var(--m-bg)]" className="mt-2 rounded-2xl">
-    <div className="flex items-center gap-[6px]">
+    <div className="mt-2 flex items-center gap-[6px]">
       <div className="relative min-w-0 flex-1 rounded-2xl bg-m-card px-3 pb-[10px] pt-[22px]" style={{ border: `1.5px solid ${borderColor}` }}>
         <span
           className="absolute -start-[1.5px] -top-[1.5px] flex items-center gap-1 rounded-es-none rounded-ee-[12px] rounded-ss-[15px] rounded-se-none px-[11px] pb-[4px] pt-[3px] font-geist text-[0.5625rem] font-extrabold uppercase tracking-[.05em] text-white"
@@ -688,7 +680,6 @@ function ExpenseRow({ item, ctx, base, locale, t, canEdit, onEdit, onDelete, onT
         </div>
       )}
     </div>
-    </MSwipeRow>
   )
 }
 

client/src/mobile/screens/trip/tabs/MPackingListTab.tsx

@@ -714,6 +714,7 @@ function PackingItemRow({ item, planner, currentUserId, editMode, canEdit, bagTr
         leading={swipeLeading}
         trailing={swipeTrailing}
         surface="bg-m-sheetop"
+        inset={4}
         className="border-t border-[color:var(--m-rowbr)] first:border-t-0"
       >
       <div className="flex items-center gap-[9px] py-2">

client/src/mobile/screens/vacay/MVacaySettingsSheet.tsx

@@ -26,7 +26,7 @@ interface MVacaySettingsSheetProps {
 
 /**
  * Vacay settings sheet: weekend blocking (+ selectable weekend days), week
- * start, carry-over, company holidays, public-holiday calendars (nager.at —
+ * start, carry-over, company holidays, public-holiday calendars (Nager.Holidays —
  * label/color/country/region, several) and dissolving the Fusion.
  */
 /** Each setting is a card on the inner surface, as the trip settings' sections. */

client/src/mobile/usePullToRefresh.test.tsx

@@ -92,4 +92,23 @@ describe('usePullToRefresh', () => {
     touch('touchend');
     expect(onRefresh).not.toHaveBeenCalled();
   });
+
+  it('holds a clearly downward move at the top from its first pixel, so the bounce does not start under the pull', () => {
+    setup();
+    touch('touchstart', 100, 100);
+    expect(touch('touchmove', 100, 103).defaultPrevented).toBe(true);
+    touch('touchend');
+  });
+
+  it('leaves the bounce everywhere else: a sideways start, and the page once it is scrolled', () => {
+    setup();
+    touch('touchstart', 100, 100);
+    expect(touch('touchmove', 104, 102).defaultPrevented).toBe(false);
+    touch('touchend');
+    Object.defineProperty(window, 'scrollY', { value: 300, configurable: true });
+    touch('touchstart', 100, 100);
+    expect(touch('touchmove', 100, 103).defaultPrevented).toBe(false);
+    touch('touchend');
+    expect(document.documentElement.hasAttribute('data-pull-refresh')).toBe(false);
+  });
 });

client/src/mobile/usePullToRefresh.ts

@@ -24,18 +24,13 @@ function refreshFailed(): void {}
  * React render per frame; `state` only changes at the edges (armed, refreshing).
  */
 /*
- * The iOS app lets the page bounce at its ends (mobile.css). A pull is only told
- * from a scroll after 8 px, and by then WebKit's own bounce has started and can no
- * longer be stopped, so the two would pull at once. While a screen offers
- * pull-to-refresh, <html> carries data-pull-refresh and the page does not bounce.
+ * The iOS app lets the page bounce at its ends (mobile.css), as every iOS list
+ * does. Only the pull down from the very top is this hook's: WebKit starts its
+ * own bounce on the first move, long before a pull is told from a scroll at 8 px,
+ * so a move that clearly heads down from the top is held from the first pixel.
+ * Everywhere else, the bottom of the page included, the bounce stays (TestFlight
+ * feedback: the screens with pull-to-refresh used not to bounce at all).
  */
-let bounceHolds = 0;
-function holdBounce(): void {
-  if (bounceHolds++ === 0) document.documentElement.setAttribute('data-pull-refresh', '');
-}
-function releaseBounce(): void {
-  if (--bounceHolds === 0) document.documentElement.removeAttribute('data-pull-refresh');
-}
 
 export function usePullToRefresh(
   contentRef: RefObject<HTMLElement | null>,
@@ -77,6 +72,8 @@ export function usePullToRefresh(
       const dx = e.touches[0].clientX - start.x;
       const dy = e.touches[0].clientY - start.y;
       if (!pulling) {
+        // Clearly downward at the top: WebKit's bounce must not start under the pull.
+        if (dy > 0 && dy >= 2 * Math.abs(dx) && scrolled() <= 0 && e.cancelable) e.preventDefault();
         // Decide once: a sideways or upward start belongs to whatever is under the finger.
         if (Math.abs(dy) < 8 && Math.abs(dx) < 8) return;
         if (dy <= 0 || Math.abs(dx) > Math.abs(dy) || scrolled() > 0) {
@@ -127,7 +124,6 @@ export function usePullToRefresh(
         });
     };
 
-    holdBounce();
     window.addEventListener('touchstart', onStart, { passive: true });
     // Not passive: once a pull has started, the page must not also scroll or bounce.
     window.addEventListener('touchmove', onMove, { passive: false });
@@ -139,7 +135,6 @@ export function usePullToRefresh(
       window.removeEventListener('touchend', onEnd);
       window.removeEventListener('touchcancel', onEnd);
       place(0, false);
-      releaseBounce();
     };
   }, [contentRef, enabled, scrollerRef]);
 

client/src/native/browserSignIn.test.ts

@@ -8,21 +8,28 @@ import {
   BrowserSignInCancelled,
   createHandoffSecret,
   handoffUrl,
+  isHandoffReturn,
   rememberHandoffReturn,
   requestHandoffCode,
+  resumeBrowserSignIn,
   signInThroughBrowser,
   signInWithPasskey,
   takeHandoffReturn,
 } from './browserSignIn';
 import { TrekShell } from './trekShell';
 
-vi.mock('./trekShell', () => ({ APP_URL_SCHEME: 'com.liketrek.trek', TrekShell: { authenticate: vi.fn() } }));
+vi.mock('./trekShell', () => ({
+  APP_URL_SCHEME: 'com.liketrek.trek',
+  TrekShell: { authenticate: vi.fn(), takeAuthCallback: vi.fn() },
+}));
 vi.mock('@simplewebauthn/browser', () => ({ startAuthentication: vi.fn() }));
 vi.mock('../api/client', () => ({ authApi: { passkey: { loginOptions: vi.fn(), loginVerify: vi.fn() } } }));
 vi.mock('../api/nativeAuth', () => ({ nativeAuthApi: { exchange: vi.fn(), handoff: vi.fn() } }));
 
 beforeEach(() => {
   vi.mocked(TrekShell.authenticate).mockReset();
+  vi.mocked(TrekShell.takeAuthCallback).mockReset().mockResolvedValue({ url: null });
+  localStorage.clear();
   vi.mocked(nativeAuthApi.exchange).mockReset().mockResolvedValue();
 });
 
@@ -44,10 +51,14 @@ describe('requestHandoffCode', () => {
 });
 
 describe('handoffUrl', () => {
-  it('points at the hand-off page with the challenge and an optional start', () => {
-    expect(handoffUrl('https://trek.example.com', 'c')).toBe('https://trek.example.com/native-handoff?challenge=c');
+  it('starts at the server page in front of the hand-off page, with the challenge and an optional start', () => {
+    // Under /api, which every TREK service worker passes to the server: an older
+    // version's worker must not answer the hand-off page from its cache.
+    expect(handoffUrl('https://trek.example.com', 'c')).toBe(
+      'https://trek.example.com/api/auth/native/start?challenge=c'
+    );
     expect(handoffUrl('https://trek.example.com', 'c', 'oidc')).toBe(
-      'https://trek.example.com/native-handoff?challenge=c&start=oidc'
+      'https://trek.example.com/api/auth/native/start?challenge=c&start=oidc'
     );
   });
 });
@@ -59,7 +70,7 @@ describe('signInThroughBrowser', () => {
     await signInThroughBrowser('oidc');
 
     const opened = new URL(vi.mocked(TrekShell.authenticate).mock.calls[0][0].url);
-    expect(opened.pathname).toBe('/native-handoff');
+    expect(opened.pathname).toBe('/api/auth/native/start');
     expect(opened.searchParams.get('start')).toBe('oidc');
     expect(vi.mocked(TrekShell.authenticate).mock.calls[0][0].callbackScheme).toBe('com.liketrek.trek');
     const { code, verifier } = vi.mocked(nativeAuthApi.exchange).mock.calls[0][0];
@@ -85,6 +96,81 @@ describe('signInThroughBrowser', () => {
   });
 });
 
+describe('resumeBrowserSignIn', () => {
+  // The app was ended while the browser was in front: the sign-in started, then
+  // the page that waited for it was gone. Only the stored verifier is left.
+  const startThenLoseThePage = async () => {
+    let finish: (value: { url: string }) => void = () => {};
+    vi.mocked(TrekShell.authenticate).mockReturnValue(new Promise((resolve) => (finish = resolve)));
+    void signInThroughBrowser('oidc');
+    await Promise.resolve();
+    const url = new URL(vi.mocked(TrekShell.authenticate).mock.calls[0][0].url);
+    return { challenge: url.searchParams.get('challenge') ?? '', finish };
+  };
+
+  it('redeems a return that reached an app started anew, with the verifier of that sign-in, once', async () => {
+    const { challenge } = await startThenLoseThePage();
+    vi.mocked(TrekShell.takeAuthCallback).mockResolvedValueOnce({ url: 'com.liketrek.trek://auth?code=c-9' });
+    await expect(resumeBrowserSignIn()).resolves.toBe(true);
+    const { code, verifier } = vi.mocked(nativeAuthApi.exchange).mock.calls[0][0];
+    expect(code).toBe('c-9');
+    expect(bytesToHex(sha256(new TextEncoder().encode(verifier)))).toBe(challenge);
+    vi.mocked(TrekShell.takeAuthCallback).mockResolvedValueOnce({ url: 'com.liketrek.trek://auth?code=c-9' });
+    await expect(resumeBrowserSignIn()).resolves.toBe(false);
+    expect(nativeAuthApi.exchange).toHaveBeenCalledTimes(1);
+  });
+
+  it('does nothing without a kept return, and keeps the verifier for one that may still come', async () => {
+    await startThenLoseThePage();
+    await expect(resumeBrowserSignIn()).resolves.toBe(false);
+    vi.mocked(TrekShell.takeAuthCallback).mockResolvedValueOnce({ url: 'com.liketrek.trek://auth?code=c-2' });
+    await expect(resumeBrowserSignIn()).resolves.toBe(true);
+  });
+
+  it('does nothing on a build without takeAuthCallback', async () => {
+    vi.mocked(TrekShell.takeAuthCallback).mockRejectedValueOnce({ code: 'UNIMPLEMENTED' });
+    await expect(resumeBrowserSignIn()).resolves.toBe(false);
+    expect(nativeAuthApi.exchange).not.toHaveBeenCalled();
+  });
+
+  it('drops a verifier older than the code it waits for', async () => {
+    vi.useFakeTimers({ toFake: ['Date'] });
+    try {
+      await startThenLoseThePage();
+      vi.setSystemTime(Date.now() + 3 * 60 * 1000);
+      vi.mocked(TrekShell.takeAuthCallback).mockResolvedValueOnce({ url: 'com.liketrek.trek://auth?code=c-3' });
+      await expect(resumeBrowserSignIn()).resolves.toBe(false);
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it('a sign-in that ends leaves the verifier of a newer one alone', async () => {
+    let rejectFirst: (err: unknown) => void = () => {};
+    vi.mocked(TrekShell.authenticate)
+      .mockReturnValueOnce(new Promise((_, reject) => (rejectFirst = reject)))
+      .mockReturnValueOnce(new Promise(() => {}));
+    const first = signInThroughBrowser('oidc').catch((err: unknown) => err);
+    void signInThroughBrowser('oidc');
+    await Promise.resolve();
+    const second = new URL(vi.mocked(TrekShell.authenticate).mock.calls[1][0].url).searchParams.get('challenge');
+    rejectFirst({ code: 'CANCELLED' });
+    await expect(first).resolves.toBeInstanceOf(BrowserSignInCancelled);
+    vi.mocked(TrekShell.takeAuthCallback).mockResolvedValueOnce({ url: 'com.liketrek.trek://auth?code=c-5' });
+    await expect(resumeBrowserSignIn()).resolves.toBe(true);
+    const { verifier } = vi.mocked(nativeAuthApi.exchange).mock.calls[0][0];
+    expect(bytesToHex(sha256(new TextEncoder().encode(verifier)))).toBe(second);
+  });
+
+  it('leaves nothing behind once the running app redeemed the return itself', async () => {
+    const { finish } = await startThenLoseThePage();
+    finish({ url: 'com.liketrek.trek://auth?code=c-4' });
+    await vi.waitFor(() => expect(nativeAuthApi.exchange).toHaveBeenCalledTimes(1));
+    vi.mocked(TrekShell.takeAuthCallback).mockResolvedValueOnce({ url: 'com.liketrek.trek://auth?code=c-4' });
+    await expect(resumeBrowserSignIn()).resolves.toBe(false);
+  });
+});
+
 describe('the remembered handoff return', () => {
   const path = `/native-handoff?challenge=${'a'.repeat(64)}`;
 
@@ -114,6 +200,14 @@ describe('the remembered handoff return', () => {
     localStorage.setItem('trek_native_handoff_return', 'not json');
     expect(takeHandoffReturn()).toBeNull();
   });
+
+  it('tells a way back to the handoff page from any other stored path', () => {
+    expect(isHandoffReturn(path)).toBe(true);
+    expect(isHandoffReturn('/native-handoff')).toBe(false);
+    expect(isHandoffReturn('/oauth/consent?client_id=foo')).toBe(false);
+    expect(isHandoffReturn(null)).toBe(false);
+    expect(isHandoffReturn(42)).toBe(false);
+  });
 });
 
 describe('signInWithPasskey', () => {

client/src/native/browserSignIn.ts

@@ -12,15 +12,22 @@ import { APP_URL_SCHEME, TrekShell } from './trekShell';
  * opens the server's /native-handoff page in the system browser, lets the user
  * sign in there, and carries the session back with a one-time code.
  *
- * The verifier never leaves this function. Only its sha256 travels into the
- * browser, and the code that comes back through the URL scheme is useless to
- * anyone who does not also hold the verifier. The hash is computed in JS
+ * The verifier stays in the app. Only its sha256 travels into the browser, and
+ * the code that comes back through the URL scheme is useless to anyone who does
+ * not also hold the verifier. The hash is computed in JS
  * because crypto.subtle is missing on a plain-http server, which is how many
  * home networks reach theirs.
  */
 
 export const HANDOFF_PATH = '/native-handoff';
 
+/**
+ * Where the browser is sent first: a page of the server's that takes an older
+ * TREK's service worker off the browser and then opens HANDOFF_PATH with the
+ * same query. Under /api, which every TREK service worker passes to the server.
+ */
+const HANDOFF_START_PATH = '/api/auth/native/start';
+
 /** Where the browser starts: straight into SSO, or straight at the passkey prompt. */
 export type BrowserSignInStart = 'oidc' | 'passkey';
 
@@ -43,6 +50,11 @@ export function rememberHandoffReturn(path: string): void {
   }
 }
 
+/** A path back to the handoff page itself, and nothing else a stored value could point at. */
+export function isHandoffReturn(path: unknown): path is string {
+  return typeof path === 'string' && path.startsWith(`${HANDOFF_PATH}?challenge=`);
+}
+
 /** The remembered handoff page, once: only a fresh path to the handoff page itself. */
 export function takeHandoffReturn(): string | null {
   try {
@@ -50,9 +62,9 @@ export function takeHandoffReturn(): string | null {
     localStorage.removeItem(HANDOFF_RETURN_KEY);
     if (!raw) return null;
     const { path, at } = JSON.parse(raw) as { path?: unknown; at?: unknown };
-    if (typeof path !== 'string' || typeof at !== 'number') return null;
+    if (!isHandoffReturn(path) || typeof at !== 'number') return null;
     if (Date.now() - at > HANDOFF_RETURN_TTL_MS) return null;
-    return path.startsWith(`${HANDOFF_PATH}?challenge=`) ? path : null;
+    return path;
   } catch {
     return null;
   }
@@ -65,7 +77,7 @@ export function createHandoffSecret(): { verifier: string; challenge: string } {
 }
 
 export function handoffUrl(origin: string, challenge: string, start?: BrowserSignInStart, invite?: string): string {
-  const url = new URL(HANDOFF_PATH, origin);
+  const url = new URL(HANDOFF_START_PATH, origin);
   url.searchParams.set('challenge', challenge);
   if (start) url.searchParams.set('start', start);
   if (invite) url.searchParams.set('invite', invite);
@@ -92,9 +104,76 @@ export class BrowserSignInCancelled extends Error {
   }
 }
 
+const PENDING_SIGN_IN_KEY = 'trek_native_pending_sign_in';
+// The server keeps the code a minute (NATIVE_HANDOFF_CODE_TTL_MS); two leave room for a slow start.
+const PENDING_SIGN_IN_TTL_MS = 2 * 60 * 1000;
+
+/**
+ * Android may end the app while the system browser is in front, a Samsung
+ * phone short of memory readily so. The browser's return then starts a new
+ * app, and the call that waited for it is gone with the verifier it held, so
+ * the user came back to the sign-in page, signed in to the server but not to
+ * the app. The verifier is kept in this server's storage in the app until the
+ * return is redeemed, or for two minutes at most.
+ */
+function keepPendingSignIn(verifier: string): void {
+  try {
+    localStorage.setItem(PENDING_SIGN_IN_KEY, JSON.stringify({ verifier, at: Date.now() }));
+  } catch {
+    /* storage blocked: only the return to a running app can be redeemed */
+  }
+}
+
+/** Drops the kept verifier, if it is still this sign-in's: a newer one may have taken its place. */
+function dropPendingSignIn(verifier: string): void {
+  try {
+    const raw = localStorage.getItem(PENDING_SIGN_IN_KEY);
+    if (raw && (JSON.parse(raw) as { verifier?: unknown }).verifier === verifier) {
+      localStorage.removeItem(PENDING_SIGN_IN_KEY);
+    }
+  } catch {
+    /* storage blocked or the entry unreadable: nothing of ours to drop */
+  }
+}
+
+/** The verifier of a sign-in still open, once. */
+function takePendingSignIn(): string | null {
+  try {
+    const raw = localStorage.getItem(PENDING_SIGN_IN_KEY);
+    localStorage.removeItem(PENDING_SIGN_IN_KEY);
+    if (!raw) return null;
+    const { verifier, at } = JSON.parse(raw) as { verifier?: unknown; at?: unknown };
+    if (typeof verifier !== 'string' || typeof at !== 'number') return null;
+    return Date.now() - at <= PENDING_SIGN_IN_TTL_MS ? verifier : null;
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Redeems a sign-in whose return reached an app started anew (see
+ * keepPendingSignIn). True when the WebView now holds a session; false when
+ * there was nothing to redeem, or the app is a build that cannot tell.
+ */
+export async function resumeBrowserSignIn(): Promise<boolean> {
+  let returned: string | null;
+  try {
+    ({ url: returned } = await TrekShell.takeAuthCallback());
+  } catch {
+    return false; // a build without takeAuthCallback
+  }
+  if (!returned) return false;
+  const verifier = takePendingSignIn();
+  const code = new URL(returned).searchParams.get('code');
+  if (!verifier || !code) return false;
+  await nativeAuthApi.exchange({ code, verifier });
+  return true;
+}
+
 /** Resolves once the WebView holds a session cookie of its own. */
 export async function signInThroughBrowser(start?: BrowserSignInStart, invite?: string): Promise<void> {
   const { verifier, challenge } = createHandoffSecret();
+  keepPendingSignIn(verifier);
   let returned: string;
   try {
     ({ url: returned } = await TrekShell.authenticate({
@@ -102,9 +181,11 @@ export async function signInThroughBrowser(start?: BrowserSignInStart, invite?:
       callbackScheme: APP_URL_SCHEME,
     }));
   } catch (err) {
+    dropPendingSignIn(verifier);
     if ((err as { code?: string })?.code === 'CANCELLED') throw new BrowserSignInCancelled();
     throw err;
   }
+  dropPendingSignIn(verifier);
   const code = new URL(returned).searchParams.get('code');
   if (!code) throw new Error('The browser returned without a sign-in code');
   await nativeAuthApi.exchange({ code, verifier });

client/src/native/browserSignInFlag.test.ts

@@ -0,0 +1,34 @@
+import { afterEach, describe, expect, it } from 'vitest';
+import {
+  BROWSER_SIGN_IN_KEY,
+  BROWSER_SIGN_IN_TTL_MS,
+  browserSignInRunning,
+  endBrowserSignIn,
+} from './browserSignInFlag';
+
+afterEach(() => localStorage.clear());
+
+describe('browserSignInRunning', () => {
+  it('FE-NATIVE-SIGNINFLAG-001: counts a mark from public/native-handoff.js for as long as a sign-in may take', () => {
+    const now = 1_000_000_000;
+    expect(browserSignInRunning(now)).toBe(false);
+
+    localStorage.setItem(BROWSER_SIGN_IN_KEY, String(now - 1000));
+    expect(browserSignInRunning(now)).toBe(true);
+
+    localStorage.setItem(BROWSER_SIGN_IN_KEY, String(now - BROWSER_SIGN_IN_TTL_MS));
+    expect(browserSignInRunning(now)).toBe(false);
+    // A clock set back, or anything that is no time at all.
+    localStorage.setItem(BROWSER_SIGN_IN_KEY, String(now + 60_000));
+    expect(browserSignInRunning(now)).toBe(false);
+    localStorage.setItem(BROWSER_SIGN_IN_KEY, 'soon');
+    expect(browserSignInRunning(now)).toBe(false);
+  });
+
+  it('FE-NATIVE-SIGNINFLAG-002: ends with the hand-back to the app', () => {
+    localStorage.setItem(BROWSER_SIGN_IN_KEY, String(Date.now()));
+    endBrowserSignIn();
+    expect(localStorage.getItem(BROWSER_SIGN_IN_KEY)).toBeNull();
+    expect(browserSignInRunning()).toBe(false);
+  });
+});

client/src/native/browserSignInFlag.ts

@@ -0,0 +1,31 @@
+/**
+ * Marks the app's sign-in in the system browser while it runs. The page in front
+ * of the handoff page (public/native-handoff.js) sets it, so that until the user
+ * is handed back to the app no service worker is registered (public/registerSW.js)
+ * and no new version reloads the page (utils/versionHandover.ts). A browser tab
+ * still open on an older TREK keeps that version's worker alive, and a worker
+ * registered or a reload in the middle of the sign-in would bring it back to
+ * answer the next page with an app that has no handoff page.
+ */
+export const BROWSER_SIGN_IN_KEY = 'trek_native_signin';
+
+/** As long as a sign-in in the browser may take; the mark counts for no longer. */
+export const BROWSER_SIGN_IN_TTL_MS = 15 * 60 * 1000;
+
+export function browserSignInRunning(now = Date.now()): boolean {
+  try {
+    const started = Number(localStorage.getItem(BROWSER_SIGN_IN_KEY));
+    return Number.isFinite(started) && started > 0 && now - started >= 0 && now - started < BROWSER_SIGN_IN_TTL_MS;
+  } catch {
+    return false;
+  }
+}
+
+/** The sign-in is handed back to the app: the browser goes back to normal. */
+export function endBrowserSignIn(): void {
+  try {
+    localStorage.removeItem(BROWSER_SIGN_IN_KEY);
+  } catch {
+    /* site data blocked: the mark runs out by itself */
+  }
+}

client/src/native/iap.test.ts

@@ -8,6 +8,7 @@ const shell = vi.hoisted(() => ({
   storeFinish: vi.fn(),
   storeRestore: vi.fn(),
   storeUnfinished: vi.fn(),
+  storeHeld: vi.fn(),
   addListener: vi.fn(),
 }));
 
@@ -34,6 +35,17 @@ describe('in-app purchase client', () => {
     expect(productIdFor('pro', 'year')).toBe('cloud.pro.yearly');
   });
 
+  it('the fake client can play a store account that already holds a subscription', async () => {
+    localStorage.setItem('trek-iap-fake-held', '1');
+    try {
+      expect(await fakeIapClient.held()).toBe(true);
+      expect(await fakeIapClient.purchase('cloud.plus.monthly')).toEqual({ kind: 'subscribed' });
+    } finally {
+      localStorage.removeItem('trek-iap-fake-held');
+    }
+    expect(await fakeIapClient.held()).toBe(false);
+  });
+
   it('the fake client yields a receipt for the product asked for', async () => {
     expect(await fakeIapClient.isAvailable()).toBe(true);
     const outcome = await fakeIapClient.purchase('cloud.plus.monthly');
@@ -102,6 +114,21 @@ describe('native client', () => {
     expect(await nativeIapClient.purchase('cloud.plus.monthly')).toEqual({ kind: 'failed' });
   });
 
+  it('says when the store account already holds a subscription, and buys nothing then', async () => {
+    shell.storePurchase.mockResolvedValue({ kind: 'subscribed' });
+    expect(await nativeIapClient.purchase('cloud.plus.monthly')).toEqual({ kind: 'subscribed' });
+    shell.storeHeld.mockResolvedValue({ held: true });
+    expect(await nativeIapClient.held()).toBe(true);
+    expect(shell.storeHeld).toHaveBeenCalledWith({ prefix: 'cloud.' });
+    shell.storeHeld.mockResolvedValue({ held: false });
+    expect(await nativeIapClient.held()).toBe(false);
+  });
+
+  it('a build without storeHeld counts as holding nothing; the purchase still guards', async () => {
+    shell.storeHeld.mockRejectedValue(new Error('not implemented'));
+    expect(await nativeIapClient.held()).toBe(false);
+  });
+
   it('finishes by transaction id and swallows a failure', async () => {
     const purchase = { platform: 'apple' as const, productId: 'cloud.plus.monthly', receipt: 'x', transactionId: '7' };
     shell.storeFinish.mockResolvedValue(undefined);

client/src/native/iap.ts

@@ -29,10 +29,16 @@ export interface Purchase {
 /**
  * What a purchase attempt came to. `cancelled` is the customer backing out, not
  * an error; `pending` is a purchase waiting on someone else (Ask to Buy, a bank),
- * which a restore picks up once it goes through.
+ * which a restore picks up once it goes through. `subscribed` means the store
+ * account already holds a subscription: one per Apple ID or Google account, and
+ * a new one only once it has ended, so nothing was bought.
  */
 type PurchaseOutcome =
-  { kind: 'bought'; purchase: Purchase } | { kind: 'cancelled' } | { kind: 'pending' } | { kind: 'failed' };
+  | { kind: 'bought'; purchase: Purchase }
+  | { kind: 'cancelled' }
+  | { kind: 'pending' }
+  | { kind: 'failed' }
+  | { kind: 'subscribed' };
 
 export interface IapClient {
   /** Whether this build can take a payment. */
@@ -45,6 +51,12 @@ export interface IapClient {
   prices(productIds: string[]): Promise<Map<string, string>>;
   /** A test build (TestFlight, App Review), whose purchases cost nothing and may go ahead before the opening. */
   isSandbox(): Promise<boolean>;
+  /**
+   * Whether the store account already holds a delivered subscription. While it
+   * does, nothing can be bought: on the App Store another plan would change that
+   * subscription, on Google Play it would run beside it.
+   */
+  held(): Promise<boolean>;
   /** Runs the platform's purchase sheet for a product and resolves with what became of it. */
   purchase(productId: string): Promise<PurchaseOutcome>;
   /** Tells the store a purchase was delivered, once its instance exists. */
@@ -88,7 +100,16 @@ export const fakeIapClient: IapClient = {
   async isSandbox() {
     return true;
   },
+  async held() {
+    // `localStorage['trek-iap-fake-held'] = '1'` shows what a store account with a running subscription sees.
+    try {
+      return localStorage.getItem('trek-iap-fake-held') === '1';
+    } catch {
+      return false;
+    }
+  },
   async purchase(productId) {
+    if (await this.held()) return { kind: 'subscribed' };
     await new Promise((resolve) => setTimeout(resolve, 900));
     const nonce = String(Date.now());
     return {
@@ -160,12 +181,22 @@ export const nativeIapClient: IapClient = {
           },
         };
       }
-      if (result.kind === 'cancelled' || result.kind === 'pending') return { kind: result.kind };
+      if (result.kind === 'cancelled' || result.kind === 'pending' || result.kind === 'subscribed') {
+        return { kind: result.kind };
+      }
       return { kind: 'failed' };
     } catch {
       return { kind: 'failed' };
     }
   },
+  async held() {
+    try {
+      return (await TrekShell.storeHeld({ prefix: PRODUCT_PREFIX })).held === true;
+    } catch {
+      // A build without storeHeld: the purchase itself still refuses a second subscription.
+      return false;
+    }
+  },
   async finish(purchase) {
     try {
       await TrekShell.storeFinish({ transactionId: purchase.transactionId });

client/src/native/keepFieldInView.test.ts

@@ -54,6 +54,29 @@ describe('keepFieldInView', () => {
     expect(scroller.style.paddingBottom).toBe('');
   });
 
+  it('FE-NATIVE-KBFIELD-004: a page as tall as the screen gets room at its end and scrolls the field above the keyboard', () => {
+    // The login on an iPhone: no pane scrolls, and the keyboard plugin holds the body's height.
+    Object.defineProperty(window, 'innerHeight', { configurable: true, value: 1000 });
+    const scrollBy = vi.spyOn(window, 'scrollBy').mockImplementation(() => {});
+    const form = document.createElement('form');
+    document.body.appendChild(form);
+    field(form, 'input', 760, 800);
+
+    revealFocusedField(KEYBOARD);
+    const room = document.body.lastElementChild as HTMLElement;
+    expect(room.getAttribute('aria-hidden')).toBe('true');
+    expect(room.style.height).toBe('300px');
+    expect(scrollBy).toHaveBeenCalledWith({ top: 800 - (700 - 24), behavior: 'smooth' });
+
+    // The next field asks again without stacking a second room.
+    revealFocusedField(KEYBOARD);
+    expect(document.querySelectorAll('[aria-hidden="true"]')).toHaveLength(1);
+
+    releaseRoom();
+    expect(room.isConnected).toBe(false);
+    scrollBy.mockRestore();
+  });
+
   it('FE-NATIVE-KBFIELD-002: listens for the keyboard coming up and going', () => {
     const addListener = vi.fn(async () => ({ remove: vi.fn() }));
     keepFieldInView({ addListener } as never);

client/src/native/keepFieldInView.ts

@@ -29,6 +29,13 @@ interface KeyboardEvents {
 /** The pane given room for the keyboard, and what its bottom padding was before. */
 let padded: { pane: HTMLElement; before: string } | null = null;
 
+/**
+ * The room at the end of a page that scrolls in no pane of its own, such as the
+ * login: as tall as the screen, it has nothing to scroll by, and padding on the
+ * body does not help while the keyboard plugin holds the body's height.
+ */
+let pageRoom: HTMLElement | null = null;
+
 function scrollingPane(field: HTMLElement): HTMLElement | null {
   for (let node = field.parentElement; node; node = node.parentElement) {
     const overflow = getComputedStyle(node).overflowY;
@@ -48,7 +55,14 @@ export function revealFocusedField(keyboardHeight: number, doc: Document = docum
 
   const pane = scrollingPane(field);
   if (!pane) {
-    field.scrollIntoView({ block: 'center', behavior: 'smooth' });
+    if (!pageRoom) {
+      releaseRoom();
+      pageRoom = doc.createElement('div');
+      pageRoom.setAttribute('aria-hidden', 'true');
+      pageRoom.style.height = `${keyboardHeight}px`;
+      doc.body.appendChild(pageRoom);
+    }
+    view?.scrollBy({ top: box.bottom - (visibleBottom - AIR), behavior: 'smooth' });
     return;
   }
   if (!padded || padded.pane !== pane) {
@@ -61,6 +75,8 @@ export function revealFocusedField(keyboardHeight: number, doc: Document = docum
 
 /** Takes the room for the keyboard away again. */
 export function releaseRoom(): void {
+  pageRoom?.remove();
+  pageRoom = null;
   if (!padded) return;
   padded.pane.style.paddingBottom = padded.before;
   padded = null;

client/src/native/keyboardFields.test.ts

@@ -1,4 +1,4 @@
-import { afterEach, describe, expect, it } from 'vitest';
+import { afterEach, describe, expect, it, vi } from 'vitest';
 import { prepareField, prepareKeyboardFields } from './keyboardFields';
 
 function field(html: string): HTMLInputElement {
@@ -89,3 +89,57 @@ describe('prepareKeyboardFields', () => {
     expect(b.hasAttribute('enterkeyhint')).toBe(false);
   });
 });
+
+describe('closeOnDone', () => {
+  // Wired the way the app wires it: on the document, in the capture phase,
+  // ahead of every handler the field has of its own.
+  const enter = (el: HTMLElement) =>
+    el.dispatchEvent(new KeyboardEvent('keydown', { key: 'Enter', bubbles: true, cancelable: true }));
+  let stop: () => void = () => {};
+  afterEach(() => {
+    stop();
+    vi.useRealTimers();
+  });
+
+  it('closes the keyboard when nothing took the Enter of a "done" field', () => {
+    vi.useFakeTimers();
+    stop = prepareKeyboardFields(document);
+    const el = field('<input name="title" enterkeyhint="done">');
+    el.focus();
+    enter(el);
+    vi.runAllTimers();
+    expect(document.activeElement).not.toBe(el);
+  });
+
+  it('keeps the keyboard for a field that acted on the Enter and cleared itself', () => {
+    vi.useFakeTimers();
+    stop = prepareKeyboardFields(document);
+    const el = field('<input name="item" enterkeyhint="done">');
+    el.value = 'Socks';
+    el.focus();
+    el.addEventListener('keydown', () => {
+      el.value = '';
+    });
+    enter(el);
+    vi.runAllTimers();
+    expect(document.activeElement).toBe(el);
+  });
+
+  it('leaves "go" and "search" fields and handled Enters alone', () => {
+    vi.useFakeTimers();
+    stop = prepareKeyboardFields(document);
+    for (const hint of ['go', 'search']) {
+      const el = field(`<input enterkeyhint="${hint}">`);
+      el.focus();
+      enter(el);
+      vi.runAllTimers();
+      expect(document.activeElement).toBe(el);
+    }
+    const handled = field('<input enterkeyhint="done">');
+    handled.focus();
+    handled.addEventListener('keydown', (e) => e.preventDefault());
+    enter(handled);
+    vi.runAllTimers();
+    expect(document.activeElement).toBe(handled);
+  });
+});