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/models/config/.pi-map.index.md

@@ -0,0 +1,23 @@
+# apps/api/src/models/config (index)
+dir: apps/api/src/models/config
+
+## role
+Provides SQLAlchemy ORM models for managing configuration profiles and their hierarchical includes in the API application.
+## parent
+index: apps/api/src/models/.pi-map.index.md
+map: apps/api/src/models/.pi-map.md
+## children
+-
+## files
+- __init__.py
+- config_profile.py
+## links
+index: apps/api/src/models/config/.pi-map.index.md
+map: apps/api/src/models/config/.pi-map.md
+## workflows
+- change config behavior
+  read: __init__.py, config_profile.py
+- change config config
+  read: config_profile.py
+## dirty
+-

apps/api/src/models/config/.pi-map.md

@@ -0,0 +1,24 @@
+# apps/api/src/models/config
+dir: apps/api/src/models/config
+
+index: apps/api/src/models/config/.pi-map.index.md
+
+## role
+Provides SQLAlchemy ORM models for managing configuration profiles and their hierarchical includes in the API application.
+## files
+- __init__.py | Exports config model classes from a subpackage for simplified importing | dep: src.models.config.config_profile
+- config_profile.py | Defines SQLAlchemy ORM models for configuration profiles and their includes, storing environment variables, runtime hints, mounts, files, and git mounts with user/project/tool associations and self-referential inclusion relationships. | exp: class:ConfigProfile, class:ConfigProfileInclude | dep: uuid, typing, sqlalchemy, sqlalchemy.orm, src.models.base, src.models.project, src.models, src.models.user, src.models (ToolType)
+## arch
+Uses SQLAlchemy declarative ORM pattern with self-referential many-to-many relationships for profile inclusion, and associations to users, projects, and tools.
+## tags
+config, src, models, profile, sqlalchemy, init, orm, mounts
+## symbols
+- ConfigProfile
+- ConfigProfileInclude
+## workflows
+- change config behavior
+  read: __init__.py, config_profile.py
+- change config config
+  read: config_profile.py
+## dirty
+-