- STATE.md: advance plan counter, update progress (12/14 = 86%), record metric (Plan 01-14: 49m, 1 task, 7 files), add decision, record session. - ROADMAP.md: update phase-01 progress table (plan_count=14, summary_count=12). - REQUIREMENTS.md: mark REQ-video-ring-buffer complete (final closure for the Phase-01 video-pipeline charter). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>