FAVICON AND PROGRESSIVE WEB APP (PWA) ARCHITECTURE
Modern web applications require discrete icon assets across distinct operating system viewports. A single legacy `favicon.ico` is no longer sufficient across Retina screens, iOS home-screen bookmarks, and Android PWA install prompts:
Standard Browsers
16x16 and 32x32 PNG favicons optimized for high-DPI desktop browser tabs and bookmark toolbars.
Apple iOS Touch
180x180 square PNG with automated iOS device corner radii applied upon home-screen bookmarking.
Android & Web Manifest
192x192 and 512x512 splash screen icons referenced inside a standalone `site.webmanifest` configuration.