Fix Prisma

1 fix: error koneksi Prisma dengan retry mechanism
      2
      3 Perubahan:
      4 - src/lib/prisma.ts: Tambah retry (3x) dengan exponential backoff saat connect
      5 - src/lib/prisma-retry.ts: NEW - Utility wrapper untuk retry operations
      6 - src/app/api/user-validate/route.ts: Improve error logging dengan detail
      7 - src/middleware.tsx: Clean up commented code
      8
      9 Fitur:
     10 - Auto retry saat database connection gagal
     11 - Explicit () di production
     12 - Better error logging untuk debugging
     13 - Reusable retry wrapper (withRetry, withTimeout)
     14
     15 Testing:
     16 - Build berhasil ✅
     17 - Type checking passed ✅
     18
     19 Fixes: Error in PostgreSQL connection: Error { kind: Closed, cause: None }

### No Issue

src/app/api/user-validate/route.ts

@@ -76,15 +76,27 @@ export async function GET(req: Request) {
       data: user,
     });
   } catch (error) {
-    console.error("Error in user validation:", error);
+    const errorMsg = error instanceof Error ? error.message : 'Unknown error';
+    const errorStack = error instanceof Error ? error.stack : 'No stack';
+    
+    // Log detailed error for debugging
+    console.error("❌ [USER-VALIDATE] Error:", errorMsg);
+    console.error("❌ [USER-VALIDATE] Stack:", errorStack);
+    console.error("❌ [USER-VALIDATE] Time:", new Date().toISOString());
+    
+    // Check if it's a database connection error
+    if (errorMsg.includes("Prisma") || errorMsg.includes("database") || errorMsg.includes("connection")) {
+      console.error("❌ [USER-VALIDATE] Database connection error detected!");
+      console.error("❌ [USER-VALIDATE] DATABASE_URL exists:", !!process.env.DATABASE_URL);
+    }
+    
     return NextResponse.json(
       {
         success: false,
         message: "Terjadi kesalahan pada server",
+        error: process.env.NODE_ENV === 'development' ? errorMsg : 'Internal server error',
       },
       { status: 500 }
     );
   }
-  // Removed prisma.$disconnect() from here to prevent connection pool exhaustion
-  // Prisma connections are handled globally and shouldn't be disconnected on each request
 }