froemix fixes R01 to R14 from its own design review, plus what a second AI review found. MIDI IN was dead because D2 sat forward-parallel with the optocoupler LED, the DAC buffer fix only works if firmware must disable the DAC buffer, and removed refs are tracked in a REMOVED_REFS list so the KiCad comparison stays honest.
From the Grok pain-radar digests, Nov 1-2 2026 (Nov 1 8:41 AM ET through Nov 2 7:41 AM ET digests plus the Haitch editions). Verified live 2026-11-02: issue/PR read; title and state confirmed.