Fix Supabase column mapping

app/api/trading/trades/route.ts

@@ -21,19 +21,34 @@ export async function POST(request: NextRequest) {
   try {
     const body = await request.json()
     
+    // Convert camelCase to snake_case for Supabase
+    const trade = {
+      pair: body.pair || body.pair,
+      direction: body.direction,
+      entry_price: body.entryPrice || body.entry_price,
+      exit_price: body.exitPrice || body.exit_price,
+      status: body.status || 'open',
+      is_demo: body.isDemo ?? body.is_demo ?? true,
+      trader_style: body.traderStyle || body.trader_style,
+      setup: body.setup,
+      timeframe: body.timeframe,
+      pnl: body.pnl,
+      opened_at: new Date().toISOString(),
+    }
+    
     const { data, error } = await supabase
       .from('trades')
-      .insert([{
-        ...body,
-        opened_at: new Date().toISOString(),
-      }])
+      .insert([trade])
       .select()
     
-    if (error) throw error
+    if (error) {
+      console.error('Supabase insert error:', error)
+      return NextResponse.json({ error: error.message }, { status: 500 })
+    }
     
     return NextResponse.json({ success: true, trade: data?.[0] })
   } catch (error) {
-    console.error('Supabase error:', error)
+    console.error('Error:', error)
     return NextResponse.json({ error: 'Failed to save' }, { status: 500 })
   }
 }