Added UI and functionality for profiles

register.php

@@ -33,10 +33,24 @@ if ($role_id <= 0) {
 }
 
 try {
+    $pdo->beginTransaction();
+
+    // Create user
     $stmt = $pdo->prepare("INSERT INTO users (email, password_hash, role_id) VALUES (?, ?, ?)");
     $stmt->execute([$email, $hash, $role_id]);
+    $userId = (int)$pdo->lastInsertId();
+
+    // Create default profile for this user
+    $stmt = $pdo->prepare("INSERT INTO profiles (user_id, name, is_default) VALUES (?, 'Default', 1)");
+    $stmt->execute([$userId]);
+
+    $pdo->commit();
+
     echo json_encode(['success' => true]);
+
 } catch (Throwable $e) {
+    if ($pdo->inTransaction()) $pdo->rollBack();
+
     http_response_code(409);
     echo json_encode(['success' => false, 'error' => 'Account already exists']);
 }