feat(website): enhance web app support and icon metadata

- Add PWA-compatible icons in multiple sizes:
  - android-chrome-192x192.png
  - android-chrome-512x512.png
  - apple-touch-icon.png
  - favicon-16x16.png
  - favicon-32x32.png
- Modernize favicon handling:
  - Update favicon.ico
  - Remove deprecated favicon.png and favicon.svg
- Add site.webmanifest for better PWA integration
- Update metadata to reflect total icon count across pages

web/public/favicon.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 82.9 512 346.2"><path d="M169.3 102.7c28.8 0 52.2 23.4 52.2 52.2v66.8c1.8-.6 3.6-1 5.5-1 5.9 0 11.1 2.9 14.2 7.4v-73.2c0-39.7-32.3-72-72-72-24.8 0-46.8 12.6-59.7 31.8 5.6 3.6 10.9 7.5 16 11.8 9.4-14.3 25.5-23.8 43.8-23.8m115.6 118.1c1.9 0 3.8.4 5.5 1V155c0-28.8 23.4-52.2 52.2-52.2 18.3 0 34.4 9.5 43.8 23.8 5.1-4.2 10.4-8.2 16-11.8C389.5 95.6 367.5 83 342.7 83c-39.7 0-72 32.3-72 72v73.2c3.1-4.5 8.3-7.4 14.2-7.4m-69.3 104.8c-35.7 8.6-66 28.1-88.1 54-12.2 14.3-21.9 30.6-28.6 48l46.6.3 265.5 1.2v-.1c-29.2-77.8-112.5-123.4-195.4-103.4m11.5-61.9c-9.7 0-17.5 7.8-17.5 17.5s7.8 17.5 17.5 17.5 17.5-7.8 17.5-17.5-7.8-17.5-17.5-17.5m57.8 35.1c9.7 0 17.5-7.8 17.5-17.5s-7.8-17.5-17.5-17.5-17.5 7.8-17.5 17.5 7.8 17.5 17.5 17.5m162.5-75.6 26.7-108.8c-22.6 2.8-43.5 11.1-61.5 23.4-6.3 4.3-12.3 9.2-17.8 14.4-26.4 25.4-42.9 61.1-42.9 100.6 0 30.7 9.9 59.1 26.7 82.1 9.2 12.7 20.6 23.7 33.4 32.6l9.3-37.8c47.9-14.3 84.1-55.7 90.7-106.5zM133.5 334.9c16.8-23 26.7-51.4 26.7-82.1 0-39.5-16.5-75.2-42.9-100.6-5.5-5.3-11.5-10.1-17.8-14.4-17.9-12.3-38.8-20.6-61.5-23.4l26.7 108.8H0c6.6 50.8 42.8 92.2 90.7 106.5l9.3 37.8c12.9-8.9 24.2-19.9 33.5-32.6" style="fill:#fa5252"/></svg>

web/public/site.webmanifest

@@ -0,0 +1 @@
+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#FA5252","background_color":"#1B1B1D","display":"standalone"}