feat: VBT dashboard overview — strategy cards + heatmap + /api/vbt/summary
dashboard/server.py — new /api/vbt/summary endpoint:
- Aggregated per-strategy best stats (Sharpe, Return, Calmar, trades,
positive-Sharpe %, top combo details)
- Heatmap: strategy × interval matrix with best Sharpe per cell
dashboard/static/vbt.html — overview panel replaces empty state:
- Strategy cards grid: best Sharpe, best return, top combo,
positive-Sharpe %, run count. Click to filter sidebar.
- Heatmap: color-coded strategy × interval table (green=good,
red=bad). Hover for tooltip, click to load result.
- Back-to-overview button when viewing a strategy detail
- Overview re-shown on page load, auto-loads from /api/vbt/summary
Dashboard opens to overview → select strategy → drill into details
ramseshk
b7c7fbb0af