Tests cover:
- parseValidationResult with JSON extraction from markdown code blocks and malformed responses
- handleValidationPass verifying feature marked 'passed' and autopilot notified
- handleValidationFail verifying fix feature generated and retry budget decremented
- handleValidationBlocked verifying feature marked 'blocked' without fix generation
- Retry budget enforcement preventing further implementations when exhausted
- recoverActiveMissions verifying actual processTaskOutcome calls for features in validating/needs_fix states
Added 23 new tests (1916 total, up from 1893).
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