WinRacing V51.5 Portfolio Allocation - Added desired exposure calculation by action/tier/score/reliability/risk/conflict. - Added daily portfolio cap by day state. - Added proportional scaling when desired exposure exceeds daily cap. - Added per-race allocation units, allocation percent, portfolio rank and reason. - Added daily desired/allocated/cap/scale/cap-used metrics. - No V44-V50 formula changes. No schema migration.