chore: track all project map and index files

Add generated .pi-map.md and .pi-map.index.md files across the repository
so the project navigation maps are shared and versioned. These artifacts
are maintained by project_map_init/patch/validate and must be kept in
sync with source edits.

Note: .cache/ remains ignored (added in previous commit).

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

@@ -0,0 +1,20 @@
+# apps/api/tests/api (index)
+dir: apps/api/tests/api
+
+## role
+Integration test suite for API authentication and multi-session WebSocket terminal functionality.
+## parent
+index: apps/api/tests/.pi-map.index.md
+map: apps/api/tests/.pi-map.md
+## children
+-
+## files
+- test_terminal_ws_multi.py
+## links
+index: apps/api/tests/api/.pi-map.index.md
+map: apps/api/tests/api/.pi-map.md
+## workflows
+- change api behavior
+  read: test_terminal_ws_multi.py
+## dirty
+-

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

@@ -0,0 +1,27 @@
+# apps/api/tests/api
+dir: apps/api/tests/api
+
+index: apps/api/tests/api/.pi-map.index.md
+
+## role
+Integration test suite for API authentication and multi-session WebSocket terminal functionality.
+## files
+- test_terminal_ws_multi.py | Integration tests verifying multi-session terminal WebSocket routes exist and REST API endpoints require authentication | exp: class:TestTerminalWebSocketMultiSession, method:test_specific_session_websocket_route_exists(self, client), call:client.get, method:test_default_session_alias_route_exists(self, client), call:client.get, class:TestTerminalRestApi, method:test_list_sessions_requires_auth(self, client), call:client.get, method:test_create_session_requires_auth(self, client), call:client.post, method:test_close_session_requires_auth(self, client), call:client.delete, method:test_reset_session_requires_auth(self, client), call:client.post, method:test_rename_session_requires_auth(self, client), call:client.post, method:test_legacy_reset_alias_requires_auth(self, client), call:client.post, func:client(), call:TestClient | dep: pytest, fastapi.testclient, src.main
+## arch
+pytest-based integration testing with FastAPI TestClient, WebSocket endpoint verification, and REST API authentication requirement validation.
+## tags
+test, session, requires, auth, call:client.post, terminal, call:client.get, multi
+## symbols
+- TestTerminalWebSocketMultiSession
+- TestTerminalRestApi
+- test_specific_session_websocket_route_exists
+- test_default_session_alias_route_exists
+- test_list_sessions_requires_auth
+- test_create_session_requires_auth
+- test_close_session_requires_auth
+- test_reset_session_requires_auth
+## workflows
+- change api behavior
+  read: test_terminal_ws_multi.py
+## dirty
+-