# NEXT11 / Nex — V6.31 Dynamic Warmup 18/18 LOCKED FULLROOT

## Status
**LOCKED milestone.** Dynamic Warmup is complete at this checkpoint.

## Authority chain
- Motion / IK / resolved exercise authority: **V6.30 R9 locked fullroot**.
- Persistent exercise-transition lifecycle and camera continuity: **V6.31 R2K**.
- Planted-foot 0°↔+90° step-turn: **V6.31 R2L**, user visually approved.
- Mirrored +90°→0° return: verified after R2L; no additional product-code patch was required.

## Final QA lock
A clean fullroot smoke was run against this consolidated root in five sequential sections covering all 18 exercises.

PASS criteria achieved:
- 18/18 exercises reached and settled.
- Persistent iframe/player continuity remained intact through each tested sequential transition.
- Model and camera authority remained present.
- Presentation heading settled to target at every exercise.
- Runway/lane yaw remained world-fixed at 0 throughout the full transition coverage.
- Slow mirrored return verification (+90°→0°) used left support foot and right swing foot.
- Full-hold support-foot X/Z drift during the slow return measured effectively 0 mm.
- No resolved motion / IK / model asset change relative to V6.30 R9.

Primary QA report:
`qa/v631_lock/V6_31_FINAL_18_OF_18_TRANSITION_SMOKE.json`

## Package policy
This fullroot is now the only baseline for Dynamic Warmup work. Use delta-only checkpoints for ordinary future changes. Create another fullroot only at a deliberate milestone.