Introduce a browserPreview mode (isBrowserPreview) with adjusted viewport scaling and CSS (.phone-stage--browser-preview) and update related contract tests. Allow apiBase via URL params in nui utils so the dev build can call a local browser API base. Replace many SVG app icons with WebP (and update imports), swap crypto header PNG to WebP, and add a demo wallpaper image. Testserver now installs demo apps and configures a demo wallpaper; smoke tests updated to assert these browser-demo conditions.
Play the supplied notification vibration asset for muted push banners and loop the supplied call vibration asset for muted incoming calls. Remove the synthesized vibration tone, add playback coverage, and provide a development preview for the muted notification path.
Replaces the map atlas and several WebP app/weather icon assets with updated binaries and removes the old feather.svg icon (iconography migrated to WebP). Pure asset refresh / visual update; no code changes. Run the frontend build (build_frontend.bat) if you need to verify the updated NUI bundle.