Ensure exclusive admission cleanup keeps releasing every held slot file even when an unlock or close operation fails, and release partial exclusive acquisitions after flock errors before propagating the original failure. Expand bundled capacity telemetry coverage to assert both first-attempt and retry records carry local_capacity_exhausted with retry_index 0 and 1 and no prompt/raw server content. Update the local capacity retry design note so pre-fix failure wording no longer describes the fixed commit as failing on HEAD.