Synthesizes work of two parallel architect agents (strategy +
paper-trading rules / backtest + UI surface) and the subsequent
challenger review. Resolves 11 issues the challenger raised:
- KevinStrategy is standalone, not BaseStrategy subclass (signature
mismatch — BaseStrategy.evaluate is bar-driven, Kevin is event-driven)
- backtester/kevin_backtest.py as parallel mention-driven mini-engine,
not a fake adapter onto BacktestEngine
- AlpacaBroker BRACKET support specified (OrderRequest schema + broker
_build_order_request extensions)
- Filtering paper-account trades via strategy_id FK (the actual field;
Trade.strategy_name doesn't exist) — migration seeds a 'kevin' row
- Cursor advance race fixed (XADD success → cursor advance)
- Daily counter mechanics specified (Redis INCR + audit dedupe)
- kevin_signal_bridge_state table added to data model (3 new tables now)
- All PKs UUID for consistency with Trade/Position
- StrategyVsBenchmarkCurve.tsx promoted from contingent to definitely-new
- 'avoid' policy split into AVOID_CLOSES_LONGS + AVOID_BLOCKS_DAYS knobs
- Phasing collapsed A+B into Phase 1 (ticker scorecard needs bridge
audit rows to render WOULD-TRADE badges)
