WinRacing V53.8 Combined Release

V53.6 Multi-Race Memory Fusion
- Recency-weighted cross-race fusion, consistency and confidence.

V53.7 Chairman Strategy Optimizer
- Converts experience, context, evolution and risk into advisory strategies.

V53.8 Explainable Chairman AI
- Produces positive drivers, caution drivers, summary and safety notes.

Safety
- ADVISORY_ONLY
- No V44-V52 weight changes
- No database schema changes
