Closes the last fully-[planned] Track-C dimension (was scored 1).
- incident.sh raise <event>: classify severity via incident-severity.map
(LOW/MED/HIGH/CRIT), record a structured entry (owner routing), and for
HIGH/CRIT auto-engage the scoped kill-switch + dispatch an alert (reuses H6
alert-dispatch.sh). Exit 2 on HIGH/CRIT so a pipeline gate goes red.
- kill-switch.sh engage/clear/check/status, scoped by project/model/provider
(+ global). `check` exits 2 when engaged so gates honor it.
- casan-harness.sh honors an engaged kill-switch before running (opt-in
CASAN_KILLSWITCH_ENFORCE=1, default OFF → baseline unchanged).
- incident-runbook.md: severity→owner→response + postmortem template + prod TODO.
- phase-c7-incident-tests.sh: 15 checks — severity grading, auto kill-switch on
HIGH/CRIT, MED-only records, lifecycle, global scope, structured record, and
the production wrapper refusing to run under an engaged switch.
Baselines: run-casan4 35/35, adversarial 44/44. New suite total: 175 → 190.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
