Backtest ReconcileService

Backtest Reconcile: do the claimed backtest numbers follow from the trades? Send a TradingView Strategy Tester 'List of trades' CSV export or a JSON trade list, optional commission settings and the claimed metrics; get net profit, win rate, profit factor, closed-trade drawdown and per-trade P&L recomputed, each claim marked MATCH or MISMATCH with both values, and findings for cost-free backtests, overlapping trades and one-trade results. Pure computation, deterministic, no market data. It never judges whether a strategy works live. Every response is a JSON object. Identity via GET /v1/version, readiness via GET /v1/health, function via POST /v1/reconcile.