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byrongamatos
e29312f446
CodeRabbit caught a real bug in the previous commit's fix. The latch mirrors the NATIVE refcount, but it was flipped before the invoke resolved: a rejected release left it reading "released" while the engine still held the suppression, so every later release short-circuited and monitor mute stayed suppressed for good — the same stuck-suppression bug the latch exists to prevent, just one level up. The latch now only stays flipped if the call actually landed, and rolls back otherwise (guarded so a newer call can't be clobbered by a stale rejection). A downlevel addon with no arbiter leaves the latch untouched instead of recording a hold it never acquired. Pins the whole contract with a vm-extracted unit test on the real screen.js function: unpaired acquires hold at most one native suppression, cycles stay balanced across 25 song loads, a rejected release retries, and both the downlevel and sync-throw paths are clean. Fails 3/5 against the original branch (the refcount leak) and 2/5 against the pre-rollback version.