chore: initialize Gitea v1.27.2 fork

Includes direct password setup links in registration emails.

Assisted-by: Codex:GPT-5

web_src/js/utils/string.ts

@@ -0,0 +1,5 @@
+export function cutString(s: string, sep: string): [string, string, boolean] {
+  const index = s.indexOf(sep);
+  if (index === -1) return [s, '', false];
+  return [s.substring(0, index), s.substring(index + sep.length), true];
+}