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/changes/archive/2025-05-18-user-config-management/.pi-map.md

@@ -0,0 +1,22 @@
+# openspec/changes/archive/2025-05-18-user-config-management
+dir: openspec/changes/archive/2025-05-18-user-config-management
+
+index: openspec/changes/archive/2025-05-18-user-config-management/.pi-map.index.md
+
+## role
+Design and planning package for a JSONB-backed user configuration management feature
+## files
+- .openspec.yaml | Defines an OpenSpec configuration file with schema type and creation date metadata
+- design.md | Design document for a simple key-value user configuration system using PostgreSQL JSONB | dep: PostgreSQL, JSONB
+- proposal.md | Proposes a feature to add persistent user preference storage and management through a JSONB-backed config system with API endpoints and frontend settings UI. | dep: database, API, frontend, UserConfig model, AppShell
+- tasks.md | Project task tracking document for implementing a user settings/config feature with backend API, frontend UI, and verification steps | dep: SQLAlchemy, Alembic, FastAPI/HTTP endpoints, React/frontend router, Docker Compose, ruff, mypy, pytest, TypeScript tooling
+## arch
+Specification-driven development with phased implementation (proposal → design → tasks), using OpenSpec schema metadata and PostgreSQL JSONB for flexible schema-less storage
+## tags
+design, user, jsonb, api, frontend, configuration, .openspec, document
+## symbols
+-
+## workflows
+-
+## dirty
+-