Add /sw.js route with send_from_directory to serve service worker from root scope with Service-Worker-Allowed:/ and Cache-Control:no-cache headers. Add navigator.serviceWorker.register() script to index.html with load event listener and scope:/ parameter. Update service worker cache to v4 with media-mark-192.svg/media-mark-512.svg additions to SHELL array.
Update manifest.json icons
Add id "/" and lang "de" fields to manifest.json. Add display_override with window-controls-overlay/standalone options and prefer_related_applications:false. Replace single media-mark.svg icon with 192x192 and 512x512 sized variants (media-mark-192.svg, media-mark-512.svg) containing gradient background, yellow strokes, and green circle with glow filter. Update service worker cache to v3 with scope "/" parameter
Add format_transfer_rate() to convert mdstat rates (e.g., 133628K/sec) into readable values like "130.5 MB/s" using 1024-based units. Add format_remaining_time() to convert mdstat durations (e.g., 450.1min) into compact German format like "7 Std. 30 Min." with day/hour/minute components. Update raid_status() to parse member devices directly from array_line in /proc/mdstat to avoid cross
Add manifest.json with app metadata, theme colors, and icon configuration for installable PWA. Add service worker (sw.js) with shell caching strategy for offline support - caches static assets on install, cleans old caches on activate, and implements network-first fetch with cache fallback for non-API requests.
Update index.html with PWA meta tags (theme-color, mobile
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