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).
This change proposed using Cloudflare API for persistent tunnels.
Superseded by temporary tunnel approach using 'cloudflared tunnel --url'
which requires no API tokens, account IDs, or DNS configuration.
Developer