critical: Fix test endpoint violating database-first pattern (Common Pitfall #29)

- Moved positionManager.addTrade() to AFTER database save succeeds
- Changed database error handling to return HTTP 500 (not silent fail)
- Test endpoint now enforces same pattern as execute endpoint
- Prevents untracked positions when database save fails
- Root cause of trade manual-1763391075992 compounding to -19.43

Before: Test endpoint added to Position Manager first, saved to DB after
After: Test endpoint saves to DB first, only adds to PM if DB succeeds
Impact: No more untracked positions from test trades with failed DB saves

app/api/trading/test/route.ts

@@ -243,13 +243,7 @@ export async function POST(request: NextRequest): Promise<NextResponse<TestTrade
       lastUpdateTime: Date.now(),
     }
 
-    // Add to position manager for monitoring
-    const positionManager = await getInitializedPositionManager()
-    await positionManager.addTrade(activeTrade)
-    
-    console.log('✅ Trade added to position manager for monitoring')
-
-    // Create response object
+    // Create response object (prepare before database save)
     const response: TestTradeResponse = {
       success: true,
       positionId: openResult.transactionSignature,
@@ -334,10 +328,27 @@ export async function POST(request: NextRequest): Promise<NextResponse<TestTrade
       
       console.log('💾 Trade saved to database')
     } catch (dbError) {
-      console.error('❌ Failed to save trade to database:', dbError)
-      // Don't fail the trade if database save fails
+      console.error('❌ CRITICAL: Failed to save trade to database:', dbError)
+      console.error('   Position is OPEN on Drift but NOT tracked!')
+      console.error('   Manual intervention required - close position immediately')
+      
+      // CRITICAL: If database save fails, we MUST NOT add to Position Manager
+      // Return error to user so they know to close manually
+      return NextResponse.json(
+        {
+          success: false,
+          error: 'Database save failed - position unprotected',
+          message: `Position opened on Drift but database save failed. CLOSE POSITION MANUALLY IMMEDIATELY. Transaction: ${openResult.transactionSignature}`,
+        },
+        { status: 500 }
+      )
     }
 
+    // Add to position manager for monitoring ONLY AFTER database save succeeds
+    const positionManager = await getInitializedPositionManager()
+    await positionManager.addTrade(activeTrade)
+    
+    console.log('✅ Trade added to position manager for monitoring')
     console.log('✅ Test trade executed successfully!')
     
     return NextResponse.json(response)