# NEXT Athlete OS · QA RC100

## Scope
RC100 implements approved premium exercise illustrations for Stage-2-Phase-1 (S2P1), excluding `dynamic-warm-up` which remains a special/fallback block.

## Changes
- Added 31 approved S2P1 premium images under `assets/img/exercises/premium/s2p1/`.
- Updated `assets/js/core/exercise-illustrations.js` with `premium-approved` manifest entries for S2P1 exerciseKeys.
- Updated `assets/js/services/exercise-illustration-service.js` to expose `data-quality` and `data-layout` for premium styling.
- Added 16:9 premium display styling in `assets/css/next-system.css`.
- Added S2P1 approval ledger in `docs/S2P1_PREMIUM_ILLUSTRATION_LEDGER_RC100.*` and updated masterlist workbook.

## Validation
- JS syntax check passed for `exercise-illustrations.js` and `exercise-illustration-service.js`.
- Manifest smoke test confirms 31 premium-approved keys and 31 existing asset files.
- Static visual QA screenshots generated via WeasyPrint/PDF fallback for mobile, iPad and desktop.

## QA screenshots
- `qa_screenshots/rc100_s2p1_premium_mobile_390x844.png`
- `qa_screenshots/rc100_s2p1_premium_ipad_820x1180.png`
- `qa_screenshots/rc100_s2p1_premium_desktop_1440x1024.png`

## Notes
Chromium/browser screenshots were not used as primary verification because the sandbox browser path is unreliable. RC100 includes deterministic static visual QA screenshots using the established WeasyPrint → PDF → PNG fallback path.