Local Environment Skill

Helps manage the Polar local development environment through the dev docker CLI. Use it to start, stop, debug, or reason about the local stack.

The two-part model

dev docker deliberately splits the stack so many worktrees can share one set of heavy infra:

• Shared infra — one copy per machine, Docker project polar-shared: postgres, redis, minio, tinybird, and optional prometheus/grafana. Postgres and redis publish no host ports; MinIO exposes 9000/9001 for browser uploads. Use dev docker exec <service> ... for services without host ports.
• Per-instance app stack — one per worktree, project polar-app-<N>: api, worker, web. Only api and web publish host ports, offset per instance so worktrees don't collide.