app: remove APK/TWA variant — PWA-only install
Robin: only PWA possible, no APK. Removed:
- src/assets/apk/soundfabrics.apk + src/assets/.well-known/assetlinks.json
- /.well-known/assetlinks.json route (server.js) — only needed for TWA
- data-apk-url on the install button (footer.ejs)
- the 'Option B — APK' branch + Option A/B framing in install-app.js (now
PWA-only)
install-app.js?v bump (without cache buster the old version would keep
being served).
Co-Authored-By: Claude <noreply@…>