feat: Journey addon — travel journal with entries, photos, public sharing & PDF export

- 5-table schema (journeys, entries, photos, trips, contributors) with migrations 87-91
- Trip-to-Journey sync engine with skeleton entries and photo sync
- Full CRUD API for journeys, entries, photos with Immich/Synology integration
- Timeline, Gallery and Map views with entry editor (markdown, mood, weather, pros/cons)
- Journey frontpage with hero card, stats and trip suggestions
- Public share links with token-based access and photo proxy
- PDF photo book export (Polarsteps-inspired)
- Dashboard redesign: mobile greeting, live trip hero, quick actions, unified card design
- BottomNav profile sheet with settings/admin/logout
- DayPlan mobile inline place picker
- TripFormModal members management
- Vacay calendar trip date indicator dots
- Fix contributor photo access (403) for journey Immich/Synology photos
- Trip deletion cleanup for journey skeleton entries
- i18n: 231 new keys across all 14 languages (native translations, no fallbacks)

client/src/components/Collab/CollabChat.tsx

@@ -762,7 +762,7 @@ export default function CollabChat({ tripId, currentUser }: CollabChatProps) {
       )}
 
       {/* Composer */}
-      <div style={{ flexShrink: 0, padding: '8px 12px calc(12px + env(safe-area-inset-bottom, 0px))', borderTop: '1px solid var(--border-faint)', background: 'var(--bg-card)' }}>
+      <div style={{ flexShrink: 0, paddingTop: 8, paddingLeft: 12, paddingRight: 12, borderTop: '1px solid var(--border-faint)', background: 'var(--bg-card)' }} className="pb-[96px] md:pb-3">
         {/* Reply preview */}
         {replyTo && (
           <div style={{