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/uploads/.pi-map.index.md

@@ -2,7 +2,7 @@
 dir: apps/api/uploads
 
 ## role
-Handles file upload processing, storage, and management for the API application.
+Handles file upload processing, storage, and retrieval for the API application.
 ## parent
 index: apps/api/.pi-map.index.md
 map: apps/api/.pi-map.md

apps/api/uploads/.pi-map.md

@@ -4,10 +4,10 @@ dir: apps/api/uploads
 index: apps/api/uploads/.pi-map.index.md
 
 ## role
-Handles file upload processing, storage, and management for the API application.
+Handles file upload processing, storage, and retrieval for the API application.
 ## files
 ## arch
-Modular service-oriented architecture with dedicated modules for different upload types (avatars, documents, images), using NestJS controllers/services with S3/cloud storage integration, file validation, and database persistence for upload metadata.
+Express.js middleware pattern with multipart form parsing, likely using Multer or similar for file handling, with storage abstraction for local/cloud backends.
 ## tags
 -
 ## symbols

apps/api/uploads/avatars/.pi-map.index.md

@@ -2,7 +2,7 @@
 dir: apps/api/uploads/avatars
 
 ## role
-Storage directory for user avatar image files uploaded through the API.
+Storage directory for user avatar image files uploaded through the API application.
 ## parent
 index: apps/api/uploads/.pi-map.index.md
 map: apps/api/uploads/.pi-map.md

apps/api/uploads/avatars/.pi-map.md

@@ -4,14 +4,14 @@ dir: apps/api/uploads/avatars
 index: apps/api/uploads/avatars/.pi-map.index.md
 
 ## role
-Storage directory for user avatar image files uploaded through the API.
+Storage directory for user avatar image files uploaded through the API application.
 ## files
 - 30d2810a-cb00-4065-8e5d-c7d32a0b55c9.png | Binary file
 - b342b640-d3c1-488d-bdba-0e2890d6c363.png | Binary file
 - da1c3121-20d7-400c-8c94-507a9d890810.png | Binary file
 - ee9fdd89-0dcc-4f46-9ad8-01f4ff93720d.png | Binary file
 ## arch
-Simple flat file storage using UUID-named PNG files with no subdirectory organization or metadata indexing.
+Simple static file storage using UUID-named PNG files in a flat directory structure, serving as a persistent blob store without database indexing or subdirectory organization.
 ## tags
 binary, 30d2810a, cb00, 4065, 8e5d, c7d32a0b55c9, b342b640, d3c1
 ## symbols