fix: resist cache-delete eviction of the menu bar agent#20
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As an LSUIElement agent with no open window, RunningBoard rates the app's termination resistance at its lowest, so under disk pressure the cache-delete daemon evicts it (exit reason 0xBADDD15C) and the menu bar icon silently vanishes until next login. Disable sudden and automatic termination at launch to raise resistance — a strong hint to the system, not a hard guarantee under severe pressure. No regression test: termination resistance is process-global runtime state with no public getter, so there is nothing observable to assert. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Problem
The menu bar app can silently disappear: as an
LSUIElementagent with no open window, RunningBoard rates its termination resistance at the lowest level. Under disk pressure macOS's cache-delete daemon then evicts it to reclaim container caches — observed in the unified log asexit reason namespace: 15 code: 0xBADDD15C(CacheDeleteAppContainerCaches requesting termination assertion). This is a clean system kill, not a crash, so it leaves no crash report. The app is a login item but not a KeepAlive agent, so it does not relaunch — the icon stays gone until the next login.Fix
Disable sudden and automatic termination at launch (
ProcessInfo.disableSuddenTermination/disableAutomaticTermination). This raises the process's termination resistance so the cache-delete daemon won't pick it first. It's a strong hint, not a hard guarantee under severe pressure — the underlying trigger is a near-full disk.Testing
make build,make test(43 tests),pre-commit— all green. No regression test added: termination resistance is process-global runtime state with no public getter, so there's nothing observable to assert.