- GetTaskDetailUseCase for single task retrieval - GET /api/v1/project-management/tasks/{task_id} endpoint - Updated task detail page to use real API - Added integration test for task detail retrieval - Test passed: 1 new test green
- Domain: Task, Milestone, TaskIssue entities with business logic - Ports: TaskRepository, MilestoneRepository, TaskIssueRepository interfaces - Adapters: In-Memory and SQLAlchemy implementations - Application: Use cases for task/milestone/issue operations - API: FastAPI routes for project management - Database: Alembic migration 002 for new tables - Tests: 7 integration tests all passing