rdmsm4x-changelog-20260914-1626-tyrell-build21-rejection-build23-dispatch

Recorded the rejected Build21 canary and isolated Build23 dispatch in the Tyrell project index row. No application or daemon installed.

Scope: rdmsm4x, /Users/richh/dev/PROJECTS.md row130 only. All unrelated bytes preserved; optimistic atomic replacement and reverse-row equality verified.

Before SHA256: f4df23e9ba9b3f5fdf07d1b67862d5a5b16e372c11d17d71a29690940d93cce5 After SHA256: bff493174abf3e737949ab3306d702e6471a815ac543c0b8ef03da4661b153bd Backup: /Users/richh/dev/_handoff/tyrell-build23-memory-20260914/PROJECTS.md.before-rejection

Undo: restore only the prior Tyrell row from the backup after checking for intervening row changes. Do not overwrite the entire current index.

Build21 remains rejected. Build23 allocation diagnosis is in progress; no source edits yet. Separate Build22 app lane and canonical main untouched. No owner action required.