Upgrade Flutter packages and fix breaking changes for Riverpod 3.0

Major package upgrades:
- Riverpod 2.x → 3.0.3 (breaking changes)
- flutter_appauth 7.0.0 → 11.0.0
- go_router 14.0.0 → 17.0.0
- permission_handler 11.3.0 → 12.0.1
- flutter_lints 5.0.0 → 6.0.0
- animate_do 3.1.2 → 4.2.0
- Plus 41 transitive dependency updates

Breaking changes fixed:

Riverpod 3.0 migration:
- Replace StateProvider with NotifierProvider pattern
- Update .valueOrNull to proper async value handling with .future
- Create LanguageNotifier and ThemeModeNotifier classes
- Fix all provider async value access patterns

Google Maps Navigation API updates:
- Rename GoogleMapsNavigationViewController to GoogleNavigationViewController
- Update Waypoint to NavigationWaypoint.withLatLngTarget
- Migrate controller methods to static GoogleMapsNavigator methods
- Update event listener types and callbacks

Localization system fixes:
- Update l10n.yaml synthetic-package configuration
- Fix import paths from flutter_gen to package imports
- Add errorTitle translation key for both en/fr
- Remove unnecessary null-aware operators (AppLocalizations is non-nullable)
- Regenerate localization files

iOS/macOS configuration:
- Update CocoaPods dependencies (AppAuth 1.7.5 → 2.0.0)
- Create missing Profile.xcconfig files for both platforms
- Sync Podfile.lock files with updated dependencies

Code quality:
- Fix all analyzer errors (0 errors remaining)
- Resolve deprecated API usage warnings
- Update async/await patterns for better error handling

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

macos/Flutter/Flutter-Profile.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

macos/Podfile.lock

@@ -1,14 +1,14 @@
 PODS:
-  - AppAuth (1.7.5):
-    - AppAuth/Core (= 1.7.5)
-    - AppAuth/ExternalUserAgent (= 1.7.5)
-  - AppAuth/Core (1.7.5)
-  - AppAuth/ExternalUserAgent (1.7.5):
+  - AppAuth (2.0.0):
+    - AppAuth/Core (= 2.0.0)
+    - AppAuth/ExternalUserAgent (= 2.0.0)
+  - AppAuth/Core (2.0.0)
+  - AppAuth/ExternalUserAgent (2.0.0):
     - AppAuth/Core
   - file_selector_macos (0.0.1):
     - FlutterMacOS
   - flutter_appauth (0.0.1):
-    - AppAuth (= 1.7.5)
+    - AppAuth (= 2.0.0)
     - FlutterMacOS
   - flutter_secure_storage_macos (6.1.3):
     - FlutterMacOS
@@ -52,9 +52,9 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/url_launcher_macos/macos
 
 SPEC CHECKSUMS:
-  AppAuth: 501c04eda8a8d11f179dbe8637b7a91bb7e5d2fa
+  AppAuth: 1c1a8afa7e12f2ec3a294d9882dfa5ab7d3cb063
   file_selector_macos: 9e9e068e90ebee155097d00e89ae91edb2374db7
-  flutter_appauth: 9e1412df1f0d76b2460e6657d01d4f866496fe88
+  flutter_appauth: 84cbf57c7926a898a612726e99241a031e33fac3
   flutter_secure_storage_macos: 7f45e30f838cf2659862a4e4e3ee1c347c2b3b54
   FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
   path_provider_foundation: bb55f6dbba17d0dccd6737fe6f7f34fbd0376880