Captain's-log entry for the 2026-07-29 session, written while it is fresh (the
armada/tasks discipline: these logs are the raw material for posts and video
narration, not bureaucracy).

Two findings, one class: a machine check stayed green while the instrument was
broken. One was Tidal's (xfadeIn turns the outgoing pattern down but never off, and
a gain-0 event still broadcasts its cut group). One was mine, shipped the previous
evening (the button remap assigned cells in reading order, inverting 32 gate/gesture
pairs that only PLN's ear caught).

The shareable core, for later: a gain of zero is not the absence of an event. In a
system where events carry side effects — voice stealing, global FX bus writes — the
silent ones still act. Plus the green-check problem twice in one day, convergence as
a bug report, and the honest limit of verdict-equality checking.