Phase 8 prep for the fix outcome banner. Adds:
- status (proposed|applied_success|applied_failed|applied_partial|dismissed)
- applied_at, verified_at (timestamps)
- partial_notes, failure_reason (engineer-provided context)
- ai_outcome_proposal (JSONB for AI [FIX_OUTCOME] marker payloads)
Backfills status='dismissed' from user_decision='dismissed'. status is
orthogonal to user_decision — outcome (did the fix work?) vs script-path.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Michael Chihlas
cdd8bb05cc