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Brennan Benson
d68eee3757
* fix(runtime): retire an exited terminal before its stream end An exit's durable retirement became asynchronous, so onPtyExit released the terminal stream before the retirement landed. A paired client answers a stream end by re-activating its pane; that activation still found the exited leaf, materialized it under the same session id, and registerPty dropped the pending retirement. The exited split pane came back as a fresh shell. The exit now stages the retirement into the in-memory session and publishes it synchronously, then notifies exit listeners, and only then makes it durable. A failed durable write is logged and left in memory for the next profile write instead of being rolled back, since the process is gone either way. This removes the pending-retirement latch and its post-await incarnation fence: there is no longer a window for them to guard. * test(runtime): a failed exit retirement still reaches disk Pins the no-rollback contract through a real Store and SQLite authority: when the retirement's own durable write fails, the in-memory retirement is carried by the next unrelated profile write, and by the app-quit flush when no other write happens. The delayed authority fixture can now fail its next write, and the acknowledged-retirement fixture reads the database a relaunch would load and models the quit flush. * test(runtime): a stream end observes the exit retirement already published The re-activation check alone passes with the listener ordering reverted, because activation awaits before its lookup. Record the session binding and publication count at the moment the exit listener fires so the ordering itself is pinned. * fix(runtime): an exit cleanup fault still ends the terminal stream * perf(runtime): exits retired together share one durable write * test(runtime): a refused staging write still retires the pane and ends the stream * refactor(runtime): describe exit retirement as staged, not durably accepted The retirement result is staged in memory before any write, and the removable-surface comment and the replacement-admission test name still described the old publish-after-durable rule.