Add robustness improvements based on v0.42.0 release experience:
- Add preflight-sync step to catch beads issues early
- Split local-install into install + verify-local-install gate
- Add dev build instructions (go build + cp to ~/.local/bin)
- Improve daemon restart with version verification
- Add post-release-sync step for clean state
- Add verification checklist to release-complete step
Formula version bumped to 2.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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