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).

openspec/specs/database-models/.pi-map.index.md

@@ -0,0 +1,19 @@
+# openspec/specs/database-models (index)
+dir: openspec/specs/database-models
+
+## role
+Defines the database schema, SQLAlchemy 2.0 async ORM models, and migration infrastructure for the Headquarter platform's six core entities.
+## parent
+index: openspec/specs/.pi-map.index.md
+map: openspec/specs/.pi-map.md
+## children
+-
+## files
+- spec.md
+## links
+index: openspec/specs/database-models/.pi-map.index.md
+map: openspec/specs/database-models/.pi-map.md
+## workflows
+-
+## dirty
+-

openspec/specs/database-models/.pi-map.md

@@ -0,0 +1,19 @@
+# openspec/specs/database-models
+dir: openspec/specs/database-models
+
+index: openspec/specs/database-models/.pi-map.index.md
+
+## role
+Defines the database schema, SQLAlchemy 2.0 async ORM models, and migration infrastructure for the Headquarter platform's six core entities.
+## files
+- spec.md | Define database schema and SQLAlchemy 2.0 async models for the Headquarter platform with six core entities, Alembic migrations, and seeding. | dep: PostgreSQL, SQLAlchemy 2.0, asyncpg, Alembic, Fernet, pytest, mypy, ruff
+## arch
+Specification-driven architecture using SQLAlchemy 2.0 async declarative models with Alembic for migrations, seeding support, and strict separation between schema definition and implementation.
+## tags
+alembic, spec, define, database, schema, sqlalchemy, async, models
+## symbols
+-
+## workflows
+-
+## dirty
+-