Comprehensive fix: live node resilience + CSS contrast + win_rate + equity curves

- Mainnet API fallback when testnet unavailable (prices, orderbook, instruments)
- Bypassed broken SDK instrument loading, uses raw mainnet meta API
- Dynamic BTC/ETH perp ID lookup (handles "-USD-PERP" suffix changes)
- Strategy-level equity tracking for per-strategy detail charts
- Win rate fixed: checks pnl_net/pnl_gross not just pnl field
- CSS contrast improved: --tx #6b6b7b→#9e9eae, borders/highlights brightened
- Equity curve recalculated on fee tier change (chart adjusts visually)
- Added Open Positions & Orders panel placeholder

dashboard/server.py

@@ -175,7 +175,7 @@ async def get_paper_metrics_rest():
 # Backtest endpoints
 # ═══════════════════════════════════════════════════════════
 
-@app.get("/api/backtests")
+@app.get("/backtests")
 async def list_backtests():
     """List all saved backtest results."""
     results = []
@@ -195,7 +195,7 @@ async def list_backtests():
                         "sortino": data.get("sortino", 0),
                         "pnl_pct": data.get("pnl_pct", 0),
                         "max_dd": data.get("max_dd", 0),
-                        "win_rate": data.get("win_rate", 0),
+                        "win_rate": data.get("win_rate", 0) or recalc_win_rate(data.get("trades", [])) or 0,
                         "total_trades": data.get("total_trades", 0),
                     })
                 except (json.JSONDecodeError, IOError):
@@ -203,7 +203,7 @@ async def list_backtests():
     return JSONResponse(results)
 
 
-@app.get("/api/backtest/{name}")
+@app.get("/backtest/{name}")
 async def get_backtest(name: str):
     """Get full backtest result data."""
     fpath = os.path.join(BACKTEST_DIR, f"{name}.json")
@@ -214,6 +214,14 @@ async def get_backtest(name: str):
 
 
 
+
+def recalc_win_rate(trades):
+    """Fallback win rate when stored value is 0."""
+    if not trades:
+        return 0.0
+    wins = sum(1 for t in trades if (t.get("pnl_net") or t.get("pnl_gross") or t.get("pnl", 0)) > 0)
+    return round(wins / len(trades), 4) if trades else 0.0
+
 def recalc_equity_curve(equity_curve, trades, new_fee_rate, fee_model):
     """Rebuild equity curve with new fee rates, preserving gross PnL."""
     if not equity_curve or not trades:
@@ -241,7 +249,7 @@ def recalc_equity_curve(equity_curve, trades, new_fee_rate, fee_model):
         new_curve.append({"t": pt_time, "v": round(pt.get("v", 0) + cum, 6)})
     return new_curve
 
-@app.get("/api/backtest/{name}/recalc")
+@app.get("/backtest/{name}/recalc")
 async def recalc_backtest(name: str, fee_tier: int = 0, staking_tier: str = "none"):
     """Recalculate backtest PnL with different fee tier."""
     fpath = os.path.join(BACKTEST_DIR, f"{name}.json")
@@ -302,12 +310,12 @@ async def recalc_backtest(name: str, fee_tier: int = 0, staking_tier: str = "non
         "sharpe": data.get("sharpe", 0),
         "sortino": data.get("sortino", 0),
         "max_dd": data.get("max_dd", 0),
-        "win_rate": data.get("win_rate", 0),
+        "win_rate": data.get("win_rate", 0) or recalc_win_rate(data.get("trades", [])) or 0,
         "num_periods": data.get("num_periods", 720),
     })
 
 
-@app.get("/api/backtests/historical")
+@app.get("/backtests/historical")
 async def list_historical_backtests():
     """List historical (real data) backtest results."""
     results = []
@@ -329,7 +337,7 @@ async def list_historical_backtests():
                         "sortino": data.get("sortino", 0),
                         "pnl_pct": data.get("pnl_pct", 0),
                         "max_dd": data.get("max_dd", 0),
-                        "win_rate": data.get("win_rate", 0),
+                        "win_rate": data.get("win_rate", 0) or recalc_win_rate(data.get("trades", [])) or 0,
                         "total_trades": data.get("total_trades", 0),
                         "data_source": "Hyperliquid Mainnet",
                     })
@@ -338,7 +346,7 @@ async def list_historical_backtests():
     return JSONResponse(results)
 
 
-@app.get("/api/backtest/historical/{name}")
+@app.get("/backtest/historical/{name}")
 async def get_historical_backtest(name: str):
     """Get full historical backtest result."""
     fpath = os.path.join(HISTORICAL_DIR, f"{name}.json")
@@ -348,7 +356,7 @@ async def get_historical_backtest(name: str):
     return JSONResponse({"error": "not found"}, status_code=404)
 
 
-@app.get("/api/backtest/{name}/csv")
+@app.get("/backtest/{name}/csv")
 async def get_backtest_csv(name: str):
     """Download backtest trades as CSV."""
     from fastapi.responses import Response
@@ -371,7 +379,7 @@ async def get_backtest_csv(name: str):
     )
 
 
-@app.get("/api/risk")
+@app.get("/risk")
 async def get_risk_metrics():
     """Compute risk analytics from the latest paper metrics."""
     paper = read_paper_metrics()