Notes / snooze, update data migration

- WIP on finishing out request list

src/start.php

@@ -18,6 +18,8 @@ if (php_sapi_name() != 'cli') {
     if (!is_null($auth0_user)) {
         $_SESSION['user_id'] = $auth0_user['sub'];
     }
+
+    $_REQUEST['time_zone'] = $_SERVER['HTTP_X_TIME_ZONE'] ?? 'Etc/UTC';
 }
 
 Configuration::$pdoDSN = 'sqlite:' . implode(DIRECTORY_SEPARATOR, [__DIR__, 'data', 'mpj.db']);
@@ -35,3 +37,25 @@ function not_found(): never
     http_response_code(404);
     die('Not found');
 }
+
+/**
+ * Return a 303 redirect ("see other" - redirects to a GET)
+ *
+ * @param string $url The URL to which the browser should be redirected
+ */
+function see_other(string $url): never
+{
+    header('Location: ' . (str_starts_with($url, 'http') ? '/' : $url));
+    http_response_code(303);
+    exit;
+}
+
+/**
+ * Add a header that instructs the browser to close an open modal dialog
+ *
+ * @param string $name The name of the dialog to be closed
+ */
+function hide_modal(string $name): void
+{
+    header("X-Hide-Modal: $name");
+}