fix(release): public links in release notes and a cancelled status

The job reaches the Gitea API at its internal address, so html_url in the
response pointed at http://10.10.1.129:3000 and every link in the notes was
unreachable from outside. Build links from PUBLIC_URL (repo variable,
defaults to https://gitea.hsrv.site). A cancelled Android build now shows
"cancelled" instead of staying at "building".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/release.test.mjs

@@ -59,6 +59,7 @@ test('android status blocks', () => {
   assert.match(debug, /отладочным ключом/);
 
   assert.match(renderAndroidStatus({ status: 'failure', runUrl: 'https://run' }), /не удалась — \[лог сборки\]/);
+  assert.match(renderAndroidStatus({ status: 'cancelled', runUrl: 'https://run' }), /отменена — \[лог сборки\]/);
 });
 
 test('replaces only the status block and is idempotent', () => {