- Remove hardcoded database_url/jwt_secret defaults, require env vars
- Add DB indexes for stocks.market, market_cap, backtests.user_id
- Optimize backtest engine: preload all prices, move stock_names out of loop
- Fix backtest API auth: filter by user_id at query level (6 endpoints)
- Add manual transaction entry modal on portfolio detail page
- Replace console.error with toast.error in signals, backtest, data explorer
- Add backtest delete button with confirmation dialog
- Replace simulated sine chart with real snapshot data
- Add strategy-to-portfolio apply flow with dialog
- Add DC pension risk asset ratio >70% warning on rebalance page
- Add backtest comparison page with metrics table and overlay chart
- Add WalkForwardResult model with train/test window metrics
- Create WalkForwardEngine that reuses existing BacktestEngine
with rolling train/test window splits
- Add POST/GET /api/backtest/{id}/walkforward endpoints
- Add Walk-forward tab to backtest detail page with parameter
controls, cumulative return chart, and window results table
- Add Alembic migration for walkforward_results table
- Add 8 unit tests for window generation logic (100 total passed)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Validates trading day count, benchmark coverage, per-date ticker
density, and date gaps before running simulation. Logs warnings for
holdings with missing prices during execution.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- VirtualPortfolio for portfolio simulation
- BacktestEngine for strategy backtesting
- Worker for async background execution
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
