Kelly position sizing — given a pattern's historical forward distribution, compute optimal allocation. Internally calls

Kelly position sizing — given a pattern's historical forward distribution, compute optimal allocation. Internally calls forward_distribution then applies Kelly criterion (mean/variance formulation). Returns full_kelly, half-kelly, confidence-adjusted allocation, dollar size, and risk levels (stop/target references). PARAMS: ticker, start_date, end_date — pattern window horizon — '7d' | '14d' | '30d' | '60d' (default '30d') portfolio_value — dollar value to size against (default 10000) kelly_fraction — fractional Kelly (default 0.5 = half-Kelly) k — number of analogs to use (default 20) POST /position_size?ticker=NVDA&start_date=2024-01-01&end_date=2024-03-01 PRICING: $0.10 per call.