chore: prepare docker webgis deployment

01/auth/helper.php

@@ -0,0 +1,20 @@
+<?php
+function start_session(): void {
+    if (session_status() === PHP_SESSION_NONE) {
+        session_set_cookie_params(['lifetime' => 0, 'httponly' => true, 'samesite' => 'Strict']);
+        session_start();
+    }
+}
+
+function is_admin(): bool {
+    start_session();
+    return !empty($_SESSION['admin_id']);
+}
+
+function require_admin_json(): void {
+    if (!is_admin()) {
+        http_response_code(403);
+        echo json_encode(['status' => 'error', 'message' => 'Akses ditolak. Silahkan login terlebih dahulu.']);
+        exit;
+    }
+}