fix: migrated users default password

src/controllers/auth.controller.js

@@ -56,7 +56,7 @@ async function login(req, res) {
 
     // --- Step 2: Check migration status
     const migratedPassword = `${userCheck.customer_no}@KCCB`;
-    const isMigratedUser = userCheck.password === migratedPassword;
+    const isMigratedUser = userCheck.password_hash === migratedPassword;
     if (isMigratedUser) {
       if (password !== migratedPassword)
         return res.status(401).json({ error: 'Invalid credentials.' });