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>

.metadata

@@ -0,0 +1,45 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "90673a4eef275d1a6692c26ac80d6d746d41a73a"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+      base_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+    - platform: android
+      create_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+      base_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+    - platform: ios
+      create_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+      base_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+    - platform: linux
+      create_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+      base_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+    - platform: macos
+      create_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+      base_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+    - platform: web
+      create_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+      base_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+    - platform: windows
+      create_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+      base_revision: 90673a4eef275d1a6692c26ac80d6d746d41a73a
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'