chore: patch project maps after stale backend test cleanup

Regenerate .pi-map*.md artifacts for source changes in:
- apps/api/src/api/tool/tool_types_validation.py
- apps/api/src/schemas/tool/tool_type.py
- apps/api/tests/integration/test_tool_types_api_extended.py
- and all affected test files from backend-frontend refactoring cleanup

apps/api/tests/integration/.pi-map.index.md

@@ -2,7 +2,7 @@
 dir: apps/api/tests/integration
 
 ## role
-Integration and unit test suite for the FastAPI backend API, covering authentication, CRUD APIs, workspace/git operations, and event/notification systems using real databases and external dependencies.
+Integration test suite for the API backend, covering authentication, workspaces, projects, notifications, configuration, and database models with real PostgreSQL and git repositories.
 ## parent
 index: apps/api/tests/.pi-map.index.md
 map: apps/api/tests/.pi-map.md