Pi implements the Agent Skills spec, so gstack skills work with one config
file (no generator, setup, or tooling changes). Skills install to
~/.pi/agent/skills/gstack-*/ for global and .pi/skills/ for project-local,
both discovered by pi at startup.
- hosts/pi.ts: minimal config mirroring opencode pattern
- hosts/index.ts: register pi in ALL_HOST_CONFIGS + re-exports
- .gitignore: skip .pi/ (generated skill docs)
- README.md: add Pi row to host table + dedicated install section
abdul