feat: in-app update downloader with progress, Gitea auto-push hook
- update_checker: Gitea at git.steggi-matrix.work, Windows + Android support, asset URL detection
- update_download_dialog: animated Pyramid logo, progress bar, platform install (exe/apk)
- update_banner: Herunterladen button triggers dialog, dismiss option
- Android: REQUEST_INSTALL_PACKAGES permission + FileProvider for APK install
- post-commit hook: auto-push to Gitea on every commit
- chat_input: larger send button (60px desktop), more padding, bigger icon
- rooms_panel: space menu visible on mobile (leave space fix)
- docs: feature-checklist.md added
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Bernd Steckmeister
cdf48c4d45