fix(culture): video countdown from media-reported duration only (QA 2026-08-18 F1-F4)
- fix(culture): drive video countdown from media-reported duration only (QA 2026-08-18 F1-F4)
- test(culture): countdown clock units + single-writer wiring contracts
- test(e2e): culture countdown verification harness + provider/viewport matrix
- test(culture): key the 95pct completion contract to the locked media duration
- docs(defects): culture-timer countdown defect record (QA 2026-08-18 F1-F4)
- docs(defects): record the QA-twin verification result (1704/1704 + 24/24)
- Merge pull request #494 from tpromni/fix/culture-feed-countdown
Source: tpromni/coach-pulse-consumer-ui → dev