feat(release): upload stable latest XPI alias during release:push

- Publish archive-org-link-grabber-latest.xpi alongside versioned artifacts
- Document behavior in README

scripts/release-push.js

@@ -174,6 +174,25 @@ for (const file of files) {
   run(cmd, [user, pass]);
 }
 
+// Upload a copy of the latest XPI under a stable filename for static linking
+try {
+  const latestAlias = 'archive-org-link-grabber-latest.xpi';
+  const localLatestSrc = path.join(artifactsDir, chosenXpi);
+  const latestUrl = `${baseUrl}/${latestAlias}`;
+  console.log(`Uploading latest alias ${latestAlias} -> ${chosenXpi}`);
+  const latestCmd = [
+    'curl',
+    '--fail',
+    '--ftp-create-dirs',
+    `--user`, `${user}:${pass}`,
+    '--upload-file', JSON.stringify(localLatestSrc),
+    JSON.stringify(latestUrl),
+  ].join(' ');
+  run(latestCmd, [user, pass]);
+} catch (e) {
+  console.warn('Warning: Failed to upload latest alias:', e.message);
+}
+
 // Also upload updates.json (self-hosted updates manifest) alongside artifacts
 const updatesPath = path.join(root, 'releases', 'updates.json');
 if (fs.existsSync(updatesPath)) {