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models/User.js

@@ -2,6 +2,16 @@ const mongoose = require('mongoose');
 const bcrypt = require('bcryptjs');
 
 const userSchema = new mongoose.Schema({
+  name: {
+    type: String,
+    trim: true,
+    default: ''
+  },
+  displayName: {
+    type: String,
+    trim: true,
+    default: ''
+  },
   username: {
     type: String,
     required: true,

routes/auth.js

@@ -117,7 +117,7 @@ router.post('/login', async (req, res) => {
         try {
           await User.findOneAndUpdate(
             { email: String(user.email).toLowerCase().trim() },
-            { $set: { name: user.name || user.displayName || '', username: (user.email || '').split('@')[0], email: String(user.email).toLowerCase().trim(), role: user.role || 'student' } },
+            { $set: { name: user.name || user.displayName || '', displayName: user.displayName || user.name || '', username: (user.email || '').split('@')[0], email: String(user.email).toLowerCase().trim(), role: user.role || 'student' } },
             { upsert: true, new: true, setDefaultsOnInsert: true }
           );
         } catch {}
@@ -185,7 +185,7 @@ router.post('/admin/users', authenticateToken, async (req, res) => {
       try {
         saved = await User.findOneAndUpdate(
           { email: String(email).toLowerCase().trim() },
-          { $set: { name: name.trim(), username: String(email).split('@')[0], email: String(email).toLowerCase().trim(), role: (role || 'student').trim() } },
+          { $set: { name: name.trim(), displayName: (displayName || name).trim(), username: String(email).split('@')[0], email: String(email).toLowerCase().trim(), role: (role || 'student').trim() } },
           { upsert: true, new: true, setDefaultsOnInsert: true }
         );
       } catch {}
@@ -214,7 +214,7 @@ router.put('/admin/users/:email', authenticateToken, async (req, res) => {
       } catch {}
     }
     // Sync legacy map as best-effort
-    if (!PREDEFINED_USERS[email]) PREDEFINED_USERS[email] = { name: name || '', email, role: role || 'student', ...(displayName ? { displayName } : {}) };
+    if (!PREDEFINED_USERS[email]) PREDEFINED_USERS[email] = { name: name || '', email, role: role || 'student', ...(displayName ? { displayName } : { displayName: name }) };
     else {
       if (typeof name === 'string' && name.trim()) PREDEFINED_USERS[email].name = name.trim();
       if (typeof role === 'string' && role.trim()) PREDEFINED_USERS[email].role = role.trim();