docs: Update SL=1.3% and Emergency=1.5% after leverage optimization

- Changed emergency stop from -2% to -1.5% hard limit
- Changed MIN/MAX_SL_PERCENT from 0.8-2.0% range to fixed 1.3%
- Changed legacy STOP_LOSS_PERCENT fallback to -1.3%
- Based on TradingView backtesting with proper 7x leverage math:
  * 1.3% SL: Risk $127, Reward $157 (favorable ratio)
  * Higher SLs had risk > reward at 7x leverage on $1,400 capital

.github/copilot-instructions.md

@@ -238,7 +238,7 @@ grep -r "KEYWORD" lib/ app/ --include="*.ts"
 - TP2-as-runner (40% runner after TP1, configurable)
 - ADX-based runner SL (adaptive positioning by trend strength)
 - Adaptive trailing stop (real-time 1-min ADX adjustments)
-- Emergency stop (-2% hard limit)
+- Emergency stop (-1.5% hard limit)
 
 **🛡️ Risk Management:**
 - Adaptive leverage (quality-based position sizing)
@@ -2938,11 +2938,12 @@ MIN_TP1_PERCENT=0.5      # Don't go below 0.5% for TP1
 MAX_TP1_PERCENT=1.5      # Don't go above 1.5% for TP1
 MIN_TP2_PERCENT=1.0      # Don't go below 1.0% for TP2
 MAX_TP2_PERCENT=3.0      # Don't go above 3.0% for TP2
-MIN_SL_PERCENT=0.8       # Don't go below 0.8% for SL
-MAX_SL_PERCENT=2.0       # Don't go above 2.0% for SL
+MIN_SL_PERCENT=1.3       # Fixed SL (Jan 16, 2026 - optimized for 7x leverage)
+MAX_SL_PERCENT=1.3       # Fixed SL (Jan 16, 2026 - optimized for 7x leverage)
 
 # Legacy fallback (used when ATR unavailable)
-STOP_LOSS_PERCENT=-1.5
+STOP_LOSS_PERCENT=-1.3
+EMERGENCY_STOP_PERCENT=-1.5  # Safety net (Jan 16, 2026)
 TAKE_PROFIT_1_PERCENT=0.8
 TAKE_PROFIT_2_PERCENT=0.7
 ```
@@ -3147,7 +3148,7 @@ Position Manager every 2s:
   ↓ Verify on-chain position still exists (detect external closures)
   ↓ getPythPriceMonitor().getLatestPrice()
   ↓ Calculate current P&L and update MAE/MFE metrics
-  ↓ Check emergency stop (-2%) → closePosition(100%)
+  ↓ Check emergency stop (-1.5%) → closePosition(100%)
   ↓ Check SL hit → closePosition(100%)
   ↓ Check TP1 hit → closePosition(75%), cancelAllOrders(), placeExitOrders() with SL at breakeven
   ↓ Check profit lock trigger (+1.2%) → move SL to +configured%