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/scripts/.pi-map.md

@@ -0,0 +1,28 @@
+# apps/api/src/scripts
+dir: apps/api/src/scripts
+
+index: apps/api/src/scripts/.pi-map.index.md
+
+## role
+Provides utility scripts for administrative and setup tasks for the API application.
+## files
+- __init__.py | Marks the directory as a Python package and provides a docstring describing it as utility scripts for the API package.
+- seed.py | Seeds a development user into the database using SQLAlchemy async operations, with idempotency check to avoid duplicates. | exp: func:build_seed_user() → Mapping[str, str | None], func:seed_database(session: AsyncSession) → User, call:build_seed_user, call:session.scalar, call:select(User).where, call:User, call:session.add, call:session.commit, call:session.refresh, func:run() → None, call:SessionLocal, call:seed_database, call:print, call:str, func:main() → None, call:asyncio.run, call:run | dep: collections.abc, sqlalchemy, sqlalchemy.ext.asyncio, src.database, src.models.user, asyncio
+## arch
+Simple procedural scripts using async SQLAlchemy for database operations, with idempotency guards for safe re-runs.
+## tags
+seed, user, database, sqlalchemy, package, init, call:build, call:session.scalar
+## symbols
+- build_seed_user
+- seed_database
+- run
+- main
+- call:build_seed_user
+- call:session.scalar
+- call:select(User).where
+- call:User
+## workflows
+- change scripts behavior
+  read: __init__.py, seed.py
+## dirty
+-