v0.2.0

Release tooling improvements

• bead rollback — revert Cloudflare Pages to a previous deployment by ID
• bead release --dry-run — preview what would deploy without deploying
• bead release --force — deploy even when no source changes detected
• bead list --unreleased — show public beads not yet in a release
• bead log now shows Cloudflare deployment IDs alongside manifest IDs
• Graph view in bead build filters to public beads only
• Version read from package.json as single source of truth