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/src/services/.pi-map.index.md

@@ -0,0 +1,42 @@
+# apps/api/src/services (index)
+dir: apps/api/src/services
+
+## role
+Initializes the services directory as a Python package for business logic modules.
+## parent
+index: apps/api/src/.pi-map.index.md
+map: apps/api/src/.pi-map.md
+## children
+- apps/api/src/services/config
+  index: apps/api/src/services/config/.pi-map.index.md
+  map: apps/api/src/services/config/.pi-map.md
+- apps/api/src/services/docker
+  index: apps/api/src/services/docker/.pi-map.index.md
+  map: apps/api/src/services/docker/.pi-map.md
+- apps/api/src/services/git
+  index: apps/api/src/services/git/.pi-map.index.md
+  map: apps/api/src/services/git/.pi-map.md
+- apps/api/src/services/instance
+  index: apps/api/src/services/instance/.pi-map.index.md
+  map: apps/api/src/services/instance/.pi-map.md
+- apps/api/src/services/shared
+  index: apps/api/src/services/shared/.pi-map.index.md
+  map: apps/api/src/services/shared/.pi-map.md
+- apps/api/src/services/terminal
+  index: apps/api/src/services/terminal/.pi-map.index.md
+  map: apps/api/src/services/terminal/.pi-map.md
+- apps/api/src/services/tool
+  index: apps/api/src/services/tool/.pi-map.index.md
+  map: apps/api/src/services/tool/.pi-map.md
+## files
+- __init__.py
+## links
+index: apps/api/src/services/.pi-map.index.md
+map: apps/api/src/services/.pi-map.md
+## workflows
+- change services behavior
+  read: __init__.py
+- explore services subdirectories
+  index: apps/api/src/services/config/.pi-map.index.md, apps/api/src/services/docker/.pi-map.index.md, apps/api/src/services/git/.pi-map.index.md
+## dirty
+-