c0807e50e3
- Add merge command with --into and --dry-run flags - Validate target and source issues exist - Validate no self-merge attempts - Add comprehensive test coverage - Capture --id flag feature request as bd-9369 Amp-Thread-ID: https://ampcode.com/threads/T-22945597-9f4f-413b-afde-dcf3099eb2f0 Co-authored-by: Amp <amp@ampcode.com>