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>

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,46 @@
+<!-- Thanks for submitting a PR! Please read CONTRIBUTING.md before you start. -->
+
+> [!IMPORTANT]
+> **Features and UI changes require a pre-approved issue.**
+> Every PR must have a linked issue
+> that a maintainer has reviewed and approved **before you started writing code**.
+> PRs that don't meet this requirement will not be reviewed.
+> See [CONTRIBUTING.md](https://github.com/element-hq/element-call/blob/livekit/CONTRIBUTING.md) for ElementCall decided for this approach.
+
+## Content
+
+<!-- Describe shortly what has been changed -->
+
+## Motivation and context
+
+<!-- Provide a link to the pre-approved issue, or explain the context for a bug fix -->
+
+## Screenshots / GIFs
+
+<!--
+
+You can use a table like this to show a before/after comparison.
+Uncomment the markdown table below and fill in the last line:
+
+|Before|After|
+|-|-|
+|||
+
+-->
+
+## Tests
+
+<!-- Explain how you tested your changes -->
+
+- Step 1
+- Step 2
+- Step ...
+
+## Checklist
+
+- [ ] A linked, pre-approved issue exists for this feature or UI change.
+- [ ] I have read [CONTRIBUTING.md](https://github.com/element-hq/element-call/blob/livekit/CONTRIBUTING.md) in full.
+- [ ] Pull request includes screenshots or videos for any UI changes.
+- [ ] Tests written for new code (and existing touched code where feasible).
+- [ ] Linter and other CI checks pass.
+- [ ] I have licensed the changes to Element by completing the [Contributor License Agreement (CLA)](https://cla-assistant.io/element-hq/element-call)