update documentation

CHANGELOG.md

@@ -4,32 +4,41 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
-### 🌙 Mobile Application
+### Mobile Application
 
 - Default to dark theme across the mobile app
 - Filter native calendar events by location to exclude empty ones
 - Async station selection with error handling and alerts
 - Improved notification settings UI
+- Native calendar source selection with CalDAV/DAVx, Apple, Google, Exchange, subscribed, local, CardDAV, ActiveSync, and other source labels
+- Event detail sections split into reusable header, journey, bike, and nearby-stop components
 
-### 📅 Calendar Integration
+### Calendar Integration
 
 - **Google Calendar sync** via full OAuth 2.0 flow (token exchange, refresh, and status checks)
 - UI for connecting, syncing, and disconnecting Google accounts in the Calendar panel
 - Batch edit panel for managing event destinations on the web calendar
 - Edit support in AddEventModal for modifying existing events
 
-### 🚉 Public Transport
+### Public Transport
 
 - HAFAS LocMatch method in API client for finding nearest station to current location
 - Improved station selection with async search and error handling
 - WienerLinien departures hook improvements
+- HAFAS response enrichment through the ÖBB GTFS fallback when available
+- Arrive-by journey search with fallback search window
 
-### 🔧 API Client
+### API Client
 
-- Added `fetchGoogleCalendarEvents` method for Google Calendar sync
-- Added `findNearestStation` method for geolocation-based station lookup
+- Added `findStationByExtId` for resolving a saved station ID
+- Added `findNearestStationByCoords` for geolocation-based station lookup
+- Added base URL failover for backend availability issues
 - Enhanced HAFAS request handling
 
+### Documentation
+
+- Updated README, development, architecture, API, user, privacy, and testing documentation to match the current route tree and app behavior
+
 ---
 
 ## [1.0.0] — 2025-01-27
@@ -68,7 +77,7 @@ your calendar with real-time public transport data to tell you exactly when to l
 
 ### Routing
 
-- Bike route calculation from origin to departure station via OSRM
+- Bike route calculation and final walking route calculation via OSRM
 - Geocoding API integration for station lookups
 - Fallback and caching logic for API failures