The T-436 soak run came back green but produced no conpty-kill-crumbs artifact:
IsolateCrumbFile opened its append handle without creating the parent dir, and
the standalone orphan probe points it at a fresh CLIDE_LOG_DIR that nothing
else had made — so openSync failed, the crumb file was disabled, and no crumbs
were written. In the app this was masked because FileLogSink already creates
logDirectory() at boot. Create the parent ourselves (no-op when it exists).
Verified by the bundle-smoke artifact, which DID capture a real watchdog sample
(threads=31, handles=25, rssMB=175) because the release app makes the dir.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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