Add Docker registry support and release workflow

[gricha]

Summary

• Pull workspace image from ghcr.io/gricha/perry:<version> when local image not found
• Fall back to local workspace:latest if registry pull fails
• Add GitHub Actions release workflow triggered on version tags (v*)
• Reset version to 0.0.1, add files field for clean npm publishes

How it works

Image resolution order:

1. Check for local workspace:latest image
2. Try pulling ghcr.io/gricha/perry:<package-version> from registry
3. Error with instructions if neither available

Release workflow:

• Triggered by pushing version tags (e.g., v0.0.2)
• Builds and pushes Docker image to ghcr.io
• Publishes npm package

Setup required

1. Create npm automation token with 2FA bypass
2. Add NPM_TOKEN secret to GitHub repo

Test plan

• Verify bun run check passes
• Test workspace creation with local image
• Test workspace creation without local image (should pull from registry)
• Test release workflow with a test tag

🤖 Generated with Claude Code