Per-track design + risk + plan + effort estimates:
- A (msync pixel verify): SW vs HW NV12 byte comparison via FFmpeg
- B (slot-leak fix): request_pool_force_release for error recovery
- C (cap_pool race harness): synthetic libva test program
Phase 4 implementation lands in the fork as commit 988b848
(libva-v4l2-request-fourier). Phase 5 sonnet code review caught
3 actionable issues, all addressed before commit.
Phase 6+7 deploy + verify pending operator ohm-tools availability.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
