- Remove workspace_id from Pydantic models in project_management routes
- Remove workspace_id from SQLAlchemy and SQLite project management repos
- Remove workspace_id from worker tasks (storage keys, entity creation)
- Remove workspace_id from video dedup and title usage modules
- Remove workspace_id from generation and ingest worker tasks
- Clean workspace_id from all test files and scripts
- Remove workspace-specific test files (list_workspaces, workspace repos)
Task: #14 workspace_id 残留清理
- Implement DependencyContainer for all repositories and use cases
- Create singleton pattern for repository instances
- Factory methods for all use cases (auth + workspace)
- Auth middleware: get_current_user with JWT verification
- Permission middleware: require_workspace_access/admin/owner
- Support optional authentication (get_current_user_optional)
- Integrate with PermissionChecker and QuotaChecker
Phase 4 Task 25/68 completed