Implements the complete AI flow builder feature using a guided 4-stage
wizard (Foundation → Scaffold → Branch Detail → Review & Assemble).
AI assists at bounded points using Claude Haiku for cost-efficient
structured JSON generation (~$0.01-0.03/flow).
Backend: new models (ai_conversations, ai_usage), Alembic migration,
quota enforcement with billing anchor, Anthropic API integration with
prompt caching, tree validation, conversation CRUD with 24h TTL,
APScheduler cleanup job, 5 API endpoints, Pydantic schemas.
Frontend: TypeScript types, API client, Zustand store for wizard state,
7 components (modal, step indicator, foundation form, branch selector,
branch detail view, tree preview, quota display), MyTreesPage integration
with "Build with AI" button (hidden when AI not configured).
Tests: 14 validator unit tests + 11 endpoint integration tests with
mocked Anthropic (zero real API spend). All 25 tests passing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add require_engineer_or_admin to POST/PUT/DELETE in target_lists.py (blocks viewers from write ops)
- Add require_engineer_or_admin to POST/PATCH in maintenance_schedules.py (blocks viewers from write ops)
- Add team ownership guard in batch_launch_sessions after active/published checks (Fix 2)
- Wrap scheduler.remove_job in try/except for SchedulerNotRunningError and JobLookupError (Fix 3)
- Recompute next_run_at when is_active flips to True, capturing was_active before update (Fix 4)
- Add optional batch_id and target_label fields to Session type; remove unsafe cast in MaintenanceFlowDetailPage.tsx (Fix 5)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Add backend/app/core/scheduler.py with AsyncIOScheduler, CronTrigger-based
job registration, and _fire_maintenance_schedule to create batch sessions
- Wire scheduler.start()/load_all_schedules()/shutdown() into main.py lifespan
- Call register_schedule() in create_schedule endpoint after commit
- Call register_schedule()/unregister_schedule() in update_schedule based on is_active
- Add TreeShare to models/__init__.py so all SQLAlchemy mapper relationships
resolve before ORM queries in the scheduler context
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
