Initial scaffold: FocusFlow ADHD Task Manager backend

Dart Shelf API with modules: auth (JWT + PBKDF2), tasks (CRUD + dopamine scorer),
streaks (forgiveness + freeze), rewards (variable reward engine), time perception,
sync (offline-first push/pull), rooms (body doubling placeholder).
Includes DB migration (001_initial_schema.sql) and Docker Compose.

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

pubspec.yaml

@@ -0,0 +1,30 @@
+name: focusflow_api
+description: FocusFlow ADHD Task Manager Backend API
+version: 0.1.0
+publish_to: 'none'
+
+environment:
+  sdk: ^3.7.0
+
+dependencies:
+  shelf: ^1.4.0
+  shelf_router: ^1.1.0
+  shelf_cors_headers: ^0.1.0
+  shelf_web_socket: ^2.0.0
+  postgres: ^3.4.0
+  redis: ^3.0.0
+  dart_jsonwebtoken: ^2.14.0
+  crypto: ^3.0.0
+  uuid: ^4.5.0
+  dotenv: ^4.2.0
+  args: ^2.0.0
+  http: ^1.0.0
+  logging: ^1.2.0
+  json_annotation: ^4.9.0
+  web_socket_channel: ^3.0.0
+
+dev_dependencies:
+  build_runner: ^2.4.0
+  json_serializable: ^6.8.0
+  lints: ^5.0.0
+  test: ^1.24.0