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a6d12ec21e
* fix(clv2): surface SIGALRM timeout drops in observe.sh The inline-Python observation writers in observe.sh arm a signal.SIGALRM alarm (8s) so they self-terminate before the async hook's 10s timeout can orphan them (#2278). The handler _ecc_bail called sys.exit(0) with no logging, so when the alarm fired the in-flight observation was silently dropped: nothing was logged, no partial write occurred, and the shell saw a clean exit. There was no way to detect or count how many observations were being lost. Add a single stderr visibility line to both _ecc_bail handlers (the parse-error fallback path and the main observation-writing path) before sys.exit(0), using the repo's "[observe]" log prefix. Exit code stays 0: in a Claude Code hook a non-zero exit signals a block, so changing it would turn an internal timeout into a user-facing tool block. The warning goes to stderr (not stdout) because both blocks redirect stdout into the observations file. Add tests/hooks/observe-signal-timeout.test.js: a static regression guard that every _ecc_bail handler logs to stderr before exiting and keeps exit 0, plus a behavioral check that runs the real handler text extracted from observe.sh and confirms a fired alarm exits 0 and emits the [observe] warning on stderr only. Fixes #2300 * test(clv2): exercise both _ecc_bail handlers end-to-end The behavioral SIGALRM-fire test ran only handlers[0] (the parse-error fallback path); the main observation-write path (handlers[1]) was covered only by the static regex guard. The write path is the higher-value one to verify end-to-end since it carries valid, parseable data that would succeed given more time, so a silent drop there is the worst case. Loop the behavioral check over every extracted handler so a regression that silenced the second handler's stderr write is caught at runtime, not just by the static guard. * test(clv2): select timeout handlers by marker, not array index The behavioral check looped over all extracted _ecc_bail handlers by index. If an unrelated _ecc_bail were ever added to observe.sh, the loop would either test the wrong block or be diluted. Filter the handlers to those carrying the "[observe] SIGALRM timeout" marker so the live SIGALRM check stays pinned to the two #2300 timeout handlers regardless of array order or future additions. * test(clv2): fail fast when python is missing in SIGALRM check The behavioral test returned early when no python interpreter was found, which the test harness records as a PASS — so the SIGALRM contract could go entirely unverified yet still look green. Throw instead, matching the existing insaits-security-monitor convention of failing when a required Python runtime is absent, and drop the in-test console.log.