feat: implement dual stop system and database tracking

- Add PostgreSQL database with Prisma ORM
  - Trade model: tracks entry/exit, P&L, order signatures, config snapshots
  - PriceUpdate model: tracks price movements for drawdown analysis
  - SystemEvent model: logs errors and system events
  - DailyStats model: aggregated performance metrics

- Implement dual stop loss system (enabled by default)
  - Soft stop (TRIGGER_LIMIT) at -1.5% to avoid wicks
  - Hard stop (TRIGGER_MARKET) at -2.5% to guarantee exit
  - Configurable via USE_DUAL_STOPS, SOFT_STOP_PERCENT, HARD_STOP_PERCENT
  - Backward compatible with single stop modes

- Add database service layer (lib/database/trades.ts)
  - createTrade(): save new trades with all details
  - updateTradeExit(): close trades with P&L calculations
  - addPriceUpdate(): track price movements during trade
  - getTradeStats(): calculate win rate, profit factor, avg win/loss
  - logSystemEvent(): log errors and system events

- Update execute endpoint to use dual stops and save to database
  - Calculate dual stop prices when enabled
  - Pass dual stop parameters to placeExitOrders
  - Save complete trade record to database after execution

- Add test trade button to settings page
  - New /api/trading/test endpoint for executing test trades
  - Displays detailed results including dual stop prices
  - Confirmation dialog before execution
  - Shows entry price, position size, stops, and TX signature

- Generate Prisma client in Docker build
- Update DATABASE_URL for container networking

app/settings/page.tsx

@@ -32,6 +32,7 @@ export default function SettingsPage() {
   const [loading, setLoading] = useState(true)
   const [saving, setSaving] = useState(false)
   const [restarting, setRestarting] = useState(false)
+  const [testing, setTesting] = useState(false)
   const [message, setMessage] = useState<{ type: 'success' | 'error', text: string } | null>(null)
 
   useEffect(() => {
@@ -90,6 +91,44 @@ export default function SettingsPage() {
     setRestarting(false)
   }
 
+  const testTrade = async () => {
+    if (!confirm('⚠️ This will execute a REAL trade with current settings. Continue?')) {
+      return
+    }
+
+    setTesting(true)
+    setMessage(null)
+    try {
+      const response = await fetch('/api/trading/test', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          symbol: 'SOLUSDT',
+          direction: 'long',
+        }),
+      })
+
+      const data = await response.json()
+      
+      if (data.success) {
+        const dualStopsMsg = data.useDualStops 
+          ? `Dual stops: Soft $${data.softStopPrice?.toFixed(4)} | Hard $${data.hardStopPrice?.toFixed(4)}` 
+          : `SL: $${data.stopLoss?.toFixed(4)}`
+        setMessage({ 
+          type: 'success', 
+          text: `✅ Test trade executed! Size: $${data.positionSize?.toFixed(2)} | Entry: $${data.entryPrice?.toFixed(4)} | ${dualStopsMsg} | TX: ${data.positionId?.substring(0, 8)}...` 
+        })
+      } else {
+        setMessage({ type: 'error', text: `Failed: ${data.error || data.message}` })
+      }
+    } catch (error) {
+      setMessage({ type: 'error', text: `Test trade failed: ${error instanceof Error ? error.message : 'Unknown error'}` })
+    }
+    setTesting(false)
+  }
+
   const updateSetting = (key: keyof TradingSettings, value: any) => {
     if (!settings) return
     setSettings({ ...settings, [key]: value })
@@ -342,26 +381,38 @@ export default function SettingsPage() {
         </div>
 
         {/* Action Buttons */}
-        <div className="mt-8 flex gap-4">
+        <div className="mt-8 space-y-4">
+          {/* Primary Actions */}
+          <div className="flex gap-4">
+            <button
+              onClick={saveSettings}
+              disabled={saving}
+              className="flex-1 bg-gradient-to-r from-blue-500 to-purple-500 text-white font-bold py-4 px-6 rounded-lg hover:from-blue-600 hover:to-purple-600 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              {saving ? '💾 Saving...' : '💾 Save Settings'}
+            </button>
+            <button
+              onClick={restartBot}
+              disabled={restarting}
+              className="flex-1 bg-gradient-to-r from-green-500 to-emerald-500 text-white font-bold py-4 px-6 rounded-lg hover:from-green-600 hover:to-emerald-600 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              {restarting ? '🔄 Restarting...' : '🔄 Restart Bot'}
+            </button>
+            <button
+              onClick={loadSettings}
+              className="bg-slate-700 text-white font-bold py-4 px-6 rounded-lg hover:bg-slate-600 transition-all"
+            >
+              ↺ Reset
+            </button>
+          </div>
+
+          {/* Test Trade Button */}
           <button
-            onClick={saveSettings}
-            disabled={saving}
-            className="flex-1 bg-gradient-to-r from-blue-500 to-purple-500 text-white font-bold py-4 px-6 rounded-lg hover:from-blue-600 hover:to-purple-600 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
+            onClick={testTrade}
+            disabled={testing}
+            className="w-full bg-gradient-to-r from-orange-500 to-red-500 text-white font-bold py-4 px-6 rounded-lg hover:from-orange-600 hover:to-red-600 transition-all disabled:opacity-50 disabled:cursor-not-allowed border-2 border-orange-400"
           >
-            {saving ? '💾 Saving...' : '💾 Save Settings'}
-          </button>
-          <button
-            onClick={restartBot}
-            disabled={restarting}
-            className="flex-1 bg-gradient-to-r from-green-500 to-emerald-500 text-white font-bold py-4 px-6 rounded-lg hover:from-green-600 hover:to-emerald-600 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
-          >
-            {restarting ? '🔄 Restarting...' : '🔄 Restart Bot'}
-          </button>
-          <button
-            onClick={loadSettings}
-            className="bg-slate-700 text-white font-bold py-4 px-6 rounded-lg hover:bg-slate-600 transition-all"
-          >
-            ↺ Reset
+            {testing ? '🧪 Executing Test Trade...' : '🧪 Test Trade (REAL - SOL Long)'}
           </button>
         </div>