Initial commit: Fabled Android app

Flutter Android client for FabledAssistant with:
- Session-cookie auth via persistent cookie jar (Dio + cookie_jar)
- OAuth/SSO login via in-app WebView (flutter_inappwebview)
- Notes: list, detail (markdown render), create/edit
- Tasks: list with status tabs, create/edit with priority
- Chat: SSE streaming bubbles, conversation management
- Quick Capture FAB for rapid note/task creation
- Settings screen (change server URL, logout)
- Android home screen widget → opens chat
- Riverpod state management, go_router navigation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pubspec.yaml

@@ -0,0 +1,31 @@
+name: fabled_app
+description: "FabledAssistant mobile client for Android."
+publish_to: 'none'
+
+version: 1.0.0+1
+
+environment:
+  sdk: ^3.11.0
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+  cupertino_icons: ^1.0.8
+  flutter_riverpod: ^2.5.1
+  go_router: ^14.2.0
+  dio: ^5.6.0
+  cookie_jar: ^4.0.8
+  dio_cookie_manager: ^3.1.1
+  path_provider: ^2.1.4
+  shared_preferences: ^2.3.2
+  flutter_markdown: ^0.7.3
+  flutter_inappwebview: ^6.1.5
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^6.0.0
+
+flutter:
+  uses-material-design: true