ramseshk
6889e06a86
feat: VBT dashboard overhaul — pagination, caching, LTTB downsampling, deep links, export, more metrics
- Merge vbt_server.py into server.py (eliminate duplicated VBT API)
- Add server-side pagination (offset/limit) with metadata (total, has_more)
- Add server-side ?asset= filtering to results endpoint
- Add JSON file caching with 5s TTL to avoid re-parsing on every request
- Add LTTB (Largest-Triangle-Three-Buckets) downsampling for equity curves
- Add pre-computed drawdown curve to result detail response
- Add /api/vbt/result/{filename}/csv endpoint for trade export
- Add Calmar ratio and expectancy to results metadata
- Rebuild vbt.html frontend with:
- URL hash deep-linking (#filename) for bookmarkable views
- JSON and CSV export buttons in detail panel
- More metrics: Calmar, Sortino, Expectancy, End Equity (10 total)
- Running backtest progress indicator with elapsed seconds
- Pagination controls (prev/next) with page info
- Filter/sort changes auto-apply (no manual refresh needed)
- Better error states with retry buttons
- Run strategy selector independent of filter