New table: decision_events (assessment→decision→fix→verification→failure cycle)
New API:
POST /v1/decision-events (record lifecycle event)
GET /v1/decision-events (list with filters)
GET /v1/decision-events/timeline/{control_id} (full chronological timeline)
GET /v1/decision-events/stats (failure rate, cycle times)
Each event captures input_state, output_state, actor, evidence.
454 tests pass, 0 regressions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>