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/tasks/.pi-map.index.md

@@ -0,0 +1,23 @@
+# openspec/tasks (index)
+dir: openspec/tasks
+
+## role
+Contains technical specification documents tracking planned features and architectural improvements for the container development environment platform.
+## parent
+index: openspec/.pi-map.index.md
+map: openspec/.pi-map.md
+## children
+-
+## files
+- config-profile-multi-repo-mounts.md
+- home-path-expansion.md
+- mount-specificity-ordering.md
+- terminal-responsiveness.md
+- tool-definition-manifest.md
+## links
+index: openspec/tasks/.pi-map.index.md
+map: openspec/tasks/.pi-map.md
+## workflows
+-
+## dirty
+-

openspec/tasks/.pi-map.md

@@ -0,0 +1,23 @@
+# openspec/tasks
+dir: openspec/tasks
+
+index: openspec/tasks/.pi-map.index.md
+
+## role
+Contains technical specification documents tracking planned features and architectural improvements for the container development environment platform.
+## files
+- config-profile-multi-repo-mounts.md | Technical specification for refactoring git mount configuration to support multiple repository mappings per mount instead of single source/target pairs | dep: git, docker compose, react/typescript, pytest, npm, fastapi
+- home-path-expansion.md | Specification document for implementing ~ and $HOME expansion in container mount paths across backend services | dep: config_profile_resolver, manifest_compiler, tool_instances, pytest, npm
+- mount-specificity-ordering.md | Tracks completion status of a project task for implementing mount specificity ordering in Docker volume handling | dep: docker.py, pytest, tsc
+- terminal-responsiveness.md | A technical specification document outlining 7 pending tasks to improve web terminal performance through asyncio-native I/O, binary WebSocket frames, WebGL rendering, flow control, and comprehensive benchmarking. | dep: asyncio, WebSocket, xterm-addon-webgl, docker, pytest
+- tool-definition-manifest.md | A project task specification document defining a multi-PR system for implementing a Tool Definition Manifest System with backend manifest compilation, frontend workshop UI, and legacy migration support. | dep: SQLAlchemy, Alembic, Docker, Docker Compose, FastAPI/REST API, React/TypeScript frontend
+## arch
+Markdown-based task tracking system using specification-driven development with documents covering backend services (mount handling, path expansion), frontend systems (WebGL terminal rendering), and cross-cutting concerns (async I/O, manifest systems).
+## tags
+mount, specification, pytest, docker, manifest, multi, document, implementing
+## symbols
+-
+## workflows
+-
+## dirty
+-