ci: GitLab-Pipeline - build_embedded + manueller npm-Publish nach rohana (threadnet-call#1)

Registry-Entscheidung evidenzbasiert: das Package ist pnpm-Dependency von
ThreadNet-Webs apps/web, der Lockfile pinnt die Tarball-URL auf rohana -
Registry bleibt dort. Publish-Auth ueber CI-Variable GITEA_NPM_TOKEN statt
lokaler Klartext-.npmrc.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/reformat-release-notes.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+
+# This script can be used to reformat the release notes generated by
+# GitHub releases into a format slightly more appropriate for our
+# project (ie. we don't really need to mention the author of every PR)
+#
+# eg. in: * OpenTelemetry by @dbkr in https://github.com/vector-im/element-call/pull/961
+#    out: * OpenTelemetry (https://github.com/vector-im/element-call/pull/961)
+
+import sys
+import re
+
+for line in sys.stdin:
+    matches = re.match(r'^\* (.*) by (\S+) in (\S+)$', line.strip())
+    print("* %s (%s)" % (matches[1], matches[3]))