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

.opencode/.pi-map.md

@@ -4,10 +4,10 @@ dir: .opencode
 index: .opencode/.pi-map.index.md
 
 ## role
-Configuration directory for the OpenCode AI coding assistant tool
+Hidden directory for OpenCode IDE/editor configuration and workspace metadata
 ## files
 ## arch
-Tool-specific configuration storage using standard dot-directory convention with likely JSON/YAML config files and optional workspace state/logs
+IDE-specific dot-directory pattern, no active code architecture; stores tool preferences and ephemeral state
 ## tags
 -
 ## symbols