The KiCad 10 IPC API has no modified since save query, serves only the PCB editor, and has no documented zoom, highlight, or DRC request, so the session layer must treat unknown as dirty.
From the Grok pain-radar digests, Oct 27-28 2026 (Oct 27 8:41 AM ET through Oct 28 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-28: issue/PR/thread read; title and state confirmed.