A mission feature could be left status="done" while its loopState never
advanced past "implementing" and it had no linked board task, so it was
never validated. The slice-completion gate (computeSliceStatus) correctly
refuses to count an assertion-linked done feature until its validator
passes, but nothing re-drove a task-less feature — so the slice, milestone,
and whole mission could never auto-progress.
Active-mission recovery now detects these stranded done features and re-runs
assertion validation directly (read-only judge, no board task): on pass the
feature becomes legitimately complete, on fail the normal fix-feature flow
takes over. Extracted the feature-validation path into a shared
runFeatureValidation helper used by both task-completion and recovery.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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