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).
- Add docs/api/terminal.md with WebSocket protocol and reset endpoint
- Add docs/features/terminal.md with user guide for persistent sessions
- Add docs/features/terminal-troubleshooting.md with diagnostic steps
- Mark tasks 8.1-8.3 complete
Refs: persistent-terminal-sessions tasks 8.x