Follow-ups from the Windows test-freeze analysis:
- T-424 (bug, high): place each WindowsPty child in a kill-on-close Windows
Job Object so the child AND its conhost.exe are reaped on session/test-
process exit (rank-1 freeze culprit). Sibling ConPTY-teardown fixes noted
in the description.
- T-425 (epic, high): crash-survivable logging & observability, so the next
freeze leaves on-disk evidence. Children: T-426 FileLogSink, T-427 FFI
breadcrumbs, T-428 watchdog isolate, T-429 dev/prod verbosity toggle,
T-430 testmode/CI wiring.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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