feat: VBT trade log — show asset, entry/exit prices, Hyperliquid fees

Backend (vbt_runner.py):
  - Add asset (BTC/ETH) to each trade record
  - Compute per-trade fee using HL taker rate (0.05%)
    entry_fee = size * entry_px * fee_rate
    exit_fee = size * exit_px * fee_rate
  - Add pnl_gross (before fees) and pnl_net (after fees)
  - Add fee_rate field for transparency

Server (server.py):
  - Normalize old backtest trades: add missing asset, fee,
    pnl_net, pnl_gross fields
  - Holyliquid default fee rate: 0.05% taker

Frontend (vbt.html):
  - Trade log table now shows:
    Time | Side + Asset | Size | Entry | Exit | Fee | PnL (net) | Duration
  - Asset shown as inline badge in Side column
  - Fee column with explicit USD amount
  - PnL now explicitly labeled 'net' (after fees)
  - Fallback to old 'pnl' field for legacy backtest files

backtests/vbt_runner.py

@@ -442,18 +442,41 @@ class VBTBacktestRunner:
         return coin_map.get(strategy, ["BTC"])
 
     def _extract_metrics(self, pf, stats, strategy, interval, n_bars) -> dict:
-        # Extract trade records from VectorBT portfolio
+        # Determine which coin this strategy trades
+        main_coin = self._get_coins(strategy)[0]
+        asset = main_coin if main_coin else "BTC"
+
         trades = []
         try:
             trade_records = pf.trades.records_readable
             for _, t in trade_records.iterrows():
+                side = "BUY" if str(t.get("Direction", "")) == "Long" else "SELL"
+                entry_px = round(float(t.get("Avg Entry Price", 0)), 2)
+                exit_px = round(float(t.get("Avg Exit Price", 0)), 2)
+                size = round(float(t.get("Size", 0)), 6)
+                notional = size * entry_px
+
+                # VectorBT's PnL already accounts for fees when fees= is set on Portfolio
+                pnl_vbt = round(float(t.get("PnL", 0)), 4)
+                fee_rate = self._fee_rate  # applied per side by VBT
+                entry_fee = round(notional * fee_rate, 6)
+                exit_fee = round(size * exit_px * fee_rate, 6)
+                total_fee = round(entry_fee + exit_fee, 6)
+
+                # Gross PnL = net + fees
+                gross_pnl = round(pnl_vbt + total_fee, 4)
+
                 trades.append({
                     "time": str(t.get("Exit Timestamp", t.get("Entry Timestamp", "")))[:19],
-                    "side": "BUY" if str(t.get("Direction", "")) == "Long" else "SELL",
+                    "side": side,
-                    "size": round(float(t.get("Size", 0)), 6),
+                    "asset": asset,
-                    "entry_px": round(float(t.get("Avg Entry Price", 0)), 2),
+                    "size": size,
-                    "exit_px": round(float(t.get("Avg Exit Price", 0)), 2),
+                    "entry_px": entry_px,
-                    "pnl": round(float(t.get("PnL", 0)), 4),
+                    "exit_px": exit_px,
+                    "pnl_gross": gross_pnl,
+                    "pnl_net": pnl_vbt,
+                    "fee": total_fee,
+                    "fee_rate": f"{fee_rate*100:.3f}%",
                     "return_pct": round(float(t.get("Return", 0)) * 100, 3),
                     "duration": str(t.get("Duration", "")),
                 })

dashboard/server.py

@@ -576,6 +576,29 @@ def _normalize_vbt_fields(data: dict) -> dict:
             wins = sum(1 for t in trades if (t.get("pnl_net", t.get("pnl_gross", t.get("pnl", 0))) or 0) > 0)
             out["win_rate"] = round(wins / len(trades), 3)
 
+    # Normalize trade records: add asset, fee, pnl_net/pnl_gross for old files
+    trades = out.get("trades", [])
+    if trades:
+        asset = _infer_asset(out.get("strategy", ""), "")
+        hl_fee = 0.0005  # default Hyperliquid taker rate
+        for t in trades:
+            if not t.get("asset"):
+                t["asset"] = asset
+            if not t.get("fee"):
+                entry_px = float(t.get("entry_px", 0))
+                exit_px = float(t.get("exit_px", 0))
+                size = float(t.get("size", 0))
+                notional_entry = size * entry_px
+                notional_exit = size * exit_px
+                t["fee"] = round((notional_entry + notional_exit) * hl_fee, 6)
+                t["fee_rate"] = f"{hl_fee*100:.3f}%"
+            if not t.get("pnl_net"):
+                t["pnl_net"] = t.get("pnl", 0)
+            if not t.get("pnl_gross"):
+                pnl_net = float(t.get("pnl_net", t.get("pnl", 0)))
+                fee = float(t.get("fee", 0))
+                t["pnl_gross"] = round(pnl_net + fee, 4)
+
     return out
 
 

dashboard/static/vbt.html

@@ -252,8 +252,14 @@ function renderDetail(r){
 
   let trades_html='';
   if(trades.length){
-    const rows=trades.map(t=>'<tr><td style="color:#777;font-size:10px">'+String(t.time||'').substring(0,19)+'</td><td class="'+(String(t.side||'').includes('BUY')?'pos':'neg')+'">'+String(t.side||'')+'</td><td>'+Number(t.size||0).toFixed(6)+'</td><td>$'+Number(t.entry_px||0).toFixed(1)+'</td><td>$'+Number(t.exit_px||0).toFixed(1)+'</td><td class="'+(Number(t.pnl||0)>=0?'pnl-pos':'pnl-neg')+'">$'+Number(t.pnl||0).toFixed(4)+'</td><td>'+String(t.duration||'')+'</td></tr>').join('');
+    const rows=trades.map(t=>{
-    trades_html='<div class="chart-box full"><div style="display:flex;justify-content:space-between;align-items:center"><h4>Trade Log ('+trades.length+' trades)</h4></div><div class="trade-scroll"><table class="trades-table"><thead><tr><th>Time</th><th>Side</th><th>Size</th><th>Entry</th><th>Exit</th><th>PnL</th><th>Duration</th></tr></thead><tbody>'+rows+'</tbody></table></div></div>';
+      const pnl_net=Number(t.pnl_net??t.pnl??0);
+      const fee=Number(t.fee??0);
+      const pnlCls=pnl_net>=0?'pnl-pos':'pnl-neg';
+      const assetBadge = t.asset ? '<span style="font-size:9px;color:#03A9F4;background:#0d1f2b;border:1px solid #1a3a4a;border-radius:2px;padding:0 4px;margin-left:4px">'+t.asset+'</span>' : '';
+      return '<tr><td style="color:#777;font-size:10px">'+String(t.time||'').substring(0,19)+'</td><td class="'+(String(t.side||'').includes('BUY')?'pos':'neg')+'">'+String(t.side||'')+assetBadge+'</td><td>'+Number(t.size||0).toFixed(6)+'</td><td>$'+Number(t.entry_px||0).toFixed(1)+'</td><td>$'+Number(t.exit_px||0).toFixed(1)+'</td><td class="neg" style="font-size:10px">$'+fee.toFixed(6)+'</td><td class="'+pnlCls+'">$'+pnl_net.toFixed(4)+'</td><td style="font-size:10px">'+String(t.duration||'')+'</td></tr>';
+    }).join('');
+    trades_html='<div class="chart-box full"><div style="display:flex;justify-content:space-between;align-items:center"><h4>Trade Log ('+trades.length+' trades)</h4></div><div class="trade-scroll"><table class="trades-table"><thead><tr><th>Time</th><th>Side</th><th>Size</th><th>Entry</th><th>Exit</th><th>Fee</th><th>PnL (net)</th><th>Duration</th></tr></thead><tbody>'+rows+'</tbody></table></div></div>';
   }
 
   document.getElementById('content').innerHTML=