Fixed all unchecked error returns in production code:
- os.Remove() calls in cleanup paths
- cmd.Wait() in goroutines
- fmt.Fprintf() writes
- Type assertions with proper ok checks
Reduces linter issues from 99 to 88. CI should now pass linting.
- Added mergeResult struct to track operations (added vs skipped)
- Check if source issues already closed before attempting to close
- Track dependencies migrated vs already existed
- Count text references updated
- Display detailed breakdown of operations in output
- Updated help text to clarify idempotent behavior
- Added comprehensive tests for idempotent retry scenarios
- Add performMerge() with dependency migration in both directions
- Implement updateMergeTextReferences() for text reference updates
- Close source issues with 'Merged into bd-X' reason
- Fix store initialization panic by checking daemon mode earlier
- Add TODO for transaction support (deferred, see bd-215 for idempotency approach)
Closes bd-202, bd-193, bd-194, bd-195, bd-196
Related: bd-190 (merge epic), bd-215 (idempotency enhancement)
Amp-Thread-ID: https://ampcode.com/threads/T-30fe297d-4713-4f84-abc9-3bd264caa4c6
Co-authored-by: Amp <amp@ampcode.com>
