restart.integration.test.ts's `../pi.js` factory replaces the module
wholesale but omits ModelFallbackExhaustedError, which triage.ts references
via `err instanceof ModelFallbackExhaustedError` — evaluating the guard threw
"No ModelFallbackExhaustedError export is defined on the mock". Added a plain
Error-subclass stub (no restart test enters the fallback-exhausted branch).
mission-validation-trigger-gap.test.ts's two recovery-path missionStore mocks
omit getMission, which #1910's mission-active gate now walks
(getSlice → getMilestone → getMission) inside resolveFeatureMission. The throw
was swallowed by processTaskOutcome's catch, aborting recovery before it
ensured assertions / started the validator run — surfacing as
ensureFeatureAssertionLinked called 0 times. Added getMission returning an
active mission.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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