Remove index.html, styles.css, favicon.svg, script.js, and tailwind.config.js files to streamline the project and eliminate unused resources.

models/Contact.js

@@ -0,0 +1,34 @@
+const mongoose = require('mongoose');
+
+const contactSchema = new mongoose.Schema({
+  customer: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: 'Customer',
+    required: true
+  },
+  user: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: 'User',
+    required: true
+  },
+  type: {
+    type: String,
+    enum: ['phone', 'email', 'in-person', 'other'],
+    required: true
+  },
+  notes: {
+    type: String,
+    required: true
+  },
+  followUp: {
+    required: Boolean,
+    date: Date,
+    notes: String
+  },
+  createdAt: {
+    type: Date,
+    default: Date.now
+  }
+});
+
+module.exports = mongoose.model('Contact', contactSchema);