WinRacing V54.4 Combined Release

V54.2 Debate Consensus Stabilizer
- Moderates unstable agent verdicts.

V54.3 Scenario Stress Test
- Tests normal, market reversal, high conflict and data weakness scenarios.

V54.4 Chairman Decision Gate
- APPROVED / REVIEW / LIMITED / BLOCKED final advisory gate.

Safety
- ADVISORY_ONLY
- No V44-V53 score or weight changes
- No database schema changes