Update Project 3 files

03/auth_logout.php

@@ -0,0 +1,18 @@
+<?php
+/**
+ * auth_logout.php — Logout User
+ * Supports both AJAX (POST) and direct navigation (GET)
+ */
+session_start();
+session_unset();
+session_destroy();
+
+// If called via AJAX (POST), return JSON
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    header('Content-Type: application/json');
+    echo json_encode(['success' => true]);
+} else {
+    // If navigated directly, redirect to login
+    header('Location: login.html');
+    exit;
+}