fix(offline): cache accommodations, trip members, tags, and categories for full offline support

client/src/db/offlineDb.ts

@@ -1,5 +1,10 @@
 import Dexie, { type Table } from 'dexie';
-import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile } from '../types';
+import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile, Accommodation, TripMember, Tag, Category } from '../types';
+
+/** TripMember enriched with tripId so we can index by trip. */
+export interface CachedTripMember extends TripMember {
+  tripId: number;
+}
 
 // ── Queue + sync types ────────────────────────────────────────────────────────
 
@@ -52,6 +57,10 @@ class TrekOfflineDb extends Dexie {
   budgetItems!: Table<BudgetItem, number>;
   reservations!: Table<Reservation, number>;
   tripFiles!: Table<TripFile, number>;
+  accommodations!: Table<Accommodation, number>;
+  tripMembers!: Table<CachedTripMember, [number, number]>;
+  tags!: Table<Tag, number>;
+  categories!: Table<Category, number>;
   mutationQueue!: Table<QueuedMutation, string>;
   syncMeta!: Table<SyncMeta, number>;
   blobCache!: Table<BlobCacheEntry, string>;
@@ -72,6 +81,13 @@ class TrekOfflineDb extends Dexie {
       syncMeta:     'tripId',
       blobCache:    'url, cachedAt',
     });
+
+    this.version(2).stores({
+      accommodations: 'id, trip_id',
+      tripMembers:    '[tripId+id], tripId',
+      tags:           'id',
+      categories:     'id',
+    });
   }
 }
 
@@ -111,6 +127,23 @@ export async function upsertTripFiles(files: TripFile[]): Promise<void> {
   await offlineDb.tripFiles.bulkPut(files);
 }
 
+export async function upsertAccommodations(items: Accommodation[]): Promise<void> {
+  await offlineDb.accommodations.bulkPut(items);
+}
+
+export async function upsertTripMembers(tripId: number, members: TripMember[]): Promise<void> {
+  const rows: CachedTripMember[] = members.map(m => ({ ...m, tripId }));
+  await offlineDb.tripMembers.bulkPut(rows);
+}
+
+export async function upsertTags(tags: Tag[]): Promise<void> {
+  await offlineDb.tags.bulkPut(tags);
+}
+
+export async function upsertCategories(categories: Category[]): Promise<void> {
+  await offlineDb.categories.bulkPut(categories);
+}
+
 export async function upsertSyncMeta(meta: SyncMeta): Promise<void> {
   await offlineDb.syncMeta.put(meta);
 }
@@ -129,6 +162,8 @@ export async function clearTripData(tripId: number): Promise<void> {
       offlineDb.budgetItems,
       offlineDb.reservations,
       offlineDb.tripFiles,
+      offlineDb.accommodations,
+      offlineDb.tripMembers,
       offlineDb.mutationQueue,
       offlineDb.syncMeta,
     ],
@@ -140,6 +175,8 @@ export async function clearTripData(tripId: number): Promise<void> {
       await offlineDb.budgetItems.where('trip_id').equals(tripId).delete();
       await offlineDb.reservations.where('trip_id').equals(tripId).delete();
       await offlineDb.tripFiles.where('trip_id').equals(tripId).delete();
+      await offlineDb.accommodations.where('trip_id').equals(tripId).delete();
+      await offlineDb.tripMembers.where('tripId').equals(tripId).delete();
       await offlineDb.mutationQueue.where('tripId').equals(tripId).delete();
       await offlineDb.syncMeta.where('tripId').equals(tripId).delete();
     },

client/src/pages/TripPlannerPage.tsx

@@ -26,6 +26,8 @@ import { useToast } from '../components/shared/Toast'
 import { Map, X, PanelLeftClose, PanelLeftOpen, PanelRightClose, PanelRightOpen, Ticket, PackageCheck, Wallet, FolderOpen, Users } from 'lucide-react'
 import { useTranslation } from '../i18n'
 import { addonsApi, accommodationsApi, authApi, tripsApi, assignmentsApi, mapsApi } from '../api/client'
+import { accommodationRepo } from '../repo/accommodationRepo'
+import { offlineDb } from '../db/offlineDb'
 import ConfirmDialog from '../components/shared/ConfirmDialog'
 import { useResizablePanels } from '../hooks/useResizablePanels'
 import { useTripWebSocket } from '../hooks/useTripWebSocket'
@@ -104,7 +106,7 @@ export default function TripPlannerPage(): React.ReactElement | null {
 
   const loadAccommodations = useCallback(() => {
     if (tripId) {
-      accommodationsApi.list(tripId).then(d => setTripAccommodations(d.accommodations || [])).catch(() => {})
+      accommodationRepo.list(tripId).then(d => setTripAccommodations(d.accommodations || [])).catch(() => {})
       tripActions.loadReservations(tripId)
     }
   }, [tripId])
@@ -192,11 +194,16 @@ export default function TripPlannerPage(): React.ReactElement | null {
       tripActions.loadTrip(tripId).catch(() => { toast.error(t('trip.toast.loadError')); navigate('/dashboard') })
       tripActions.loadFiles(tripId)
       loadAccommodations()
-      tripsApi.getMembers(tripId).then(d => {
-        // Combine owner + members into one list
-        const all = [d.owner, ...(d.members || [])].filter(Boolean)
-        setTripMembers(all)
-      }).catch(() => {})
+      if (!navigator.onLine) {
+        offlineDb.tripMembers.where('tripId').equals(Number(tripId)).toArray()
+          .then(rows => setTripMembers(rows))
+          .catch(() => {})
+      } else {
+        tripsApi.getMembers(tripId).then(d => {
+          const all = [d.owner, ...(d.members || [])].filter(Boolean)
+          setTripMembers(all)
+        }).catch(() => {})
+      }
     }
   }, [tripId])
 

client/src/repo/accommodationRepo.ts

@@ -0,0 +1,16 @@
+import { accommodationsApi } from '../api/client'
+import { offlineDb, upsertAccommodations } from '../db/offlineDb'
+import type { Accommodation } from '../types'
+
+export const accommodationRepo = {
+  async list(tripId: number | string): Promise<{ accommodations: Accommodation[] }> {
+    if (!navigator.onLine) {
+      const accommodations = await offlineDb.accommodations
+        .where('trip_id').equals(Number(tripId)).toArray()
+      return { accommodations }
+    }
+    const result = await accommodationsApi.list(tripId)
+    upsertAccommodations(result.accommodations || []).catch(() => {})
+    return result
+  },
+}

client/src/store/tripStore.ts

@@ -1,6 +1,7 @@
 import { create } from 'zustand'
 import type { StoreApi } from 'zustand'
 import { tripsApi, tagsApi, categoriesApi } from '../api/client'
+import { offlineDb } from '../db/offlineDb'
 import { tripRepo } from '../repo/tripRepo'
 import { dayRepo } from '../repo/dayRepo'
 import { placeRepo } from '../repo/placeRepo'
@@ -94,8 +95,12 @@ export const useTripStore = create<TripStoreState>((set, get) => ({
         placeRepo.list(tripId),
         packingRepo.list(tripId),
         todoRepo.list(tripId),
-        tagsApi.list().catch(() => ({ tags: [] })),
-        categoriesApi.list().catch(() => ({ categories: [] })),
+        navigator.onLine
+          ? tagsApi.list().catch(() => offlineDb.tags.toArray().then(tags => ({ tags })))
+          : offlineDb.tags.toArray().then(tags => ({ tags })),
+        navigator.onLine
+          ? categoriesApi.list().catch(() => offlineDb.categories.toArray().then(categories => ({ categories })))
+          : offlineDb.categories.toArray().then(categories => ({ categories })),
       ])
 
       const assignmentsMap: AssignmentsMap = {}

client/src/sync/tripSyncManager.ts

@@ -10,7 +10,7 @@
  *   - trip list refresh (DashboardPage)
  *   - WS reconnect (phase 7)
  */
-import { tripsApi } from '../api/client'
+import { tripsApi, tagsApi, categoriesApi } from '../api/client'
 import {
   offlineDb,
   upsertTrip,
@@ -21,12 +21,16 @@ import {
   upsertBudgetItems,
   upsertReservations,
   upsertTripFiles,
+  upsertAccommodations,
+  upsertTripMembers,
+  upsertTags,
+  upsertCategories,
   upsertSyncMeta,
   clearTripData,
 } from '../db/offlineDb'
 import { prefetchTilesForTrip } from './tilePrefetcher'
 import { useSettingsStore } from '../store/settingsStore'
-import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile } from '../types'
+import type { Trip, Day, Place, PackingItem, TodoItem, BudgetItem, Reservation, TripFile, Accommodation, TripMember } from '../types'
 
 // ── Types ─────────────────────────────────────────────────────────────────────
 
@@ -39,6 +43,8 @@ interface TripBundle {
   budgetItems: BudgetItem[]
   reservations: Reservation[]
   files: TripFile[]
+  accommodations: Accommodation[]
+  members: TripMember[]
 }
 
 // ── Helpers ───────────────────────────────────────────────────────────────────
@@ -77,6 +83,8 @@ async function syncTrip(tripId: number): Promise<void> {
   await upsertBudgetItems(bundle.budgetItems)
   await upsertReservations(bundle.reservations)
   await upsertTripFiles(bundle.files)
+  await upsertAccommodations(bundle.accommodations || [])
+  await upsertTripMembers(tripId, bundle.members || [])
   await upsertSyncMeta({
     tripId,
     lastSyncedAt: Date.now(),
@@ -145,6 +153,10 @@ export const tripSyncManager = {
         }
       }
 
+      // Cache global user data (tags + categories) — fire-and-forget
+      tagsApi.list().then(d => upsertTags(d.tags)).catch(() => {})
+      categoriesApi.list().then(d => upsertCategories(d.categories)).catch(() => {})
+
       // Cache file blobs + map tiles in background (don't block syncAll)
       const tileUrl = useSettingsStore.getState().settings.map_tile_url || undefined
       for (const trip of toSync) {