Initial SvelteKit frontend port of windwiderstand.de

Full parity with Astro site: content rows, post/tag routes, pagination,
event badges + OSM map, comments, Live-Search via /api/search-index,
CMS image proxy, RSS, sitemap.

Deploy: Dockerfile + docker-compose.prod.yml + Gitea Actions workflow
to build + push to git.pm86.de registry and ssh-deploy to Contabo.

static/favicons/browserconfig.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+  <msapplication>
+    <tile>
+      <square70x70logo src="/favicons/ms-icon-70x70.png" />
+      <square150x150logo src="/favicons/ms-icon-150x150.png" />
+      <square310x310logo src="/favicons/ms-icon-310x310.png" />
+      <TileColor>#ffffff</TileColor>
+    </tile>
+  </msapplication>
+</browserconfig>

static/favicons/manifest.json

@@ -0,0 +1,46 @@
+{
+  "name": "Windwiderstand",
+  "short_name": "Windwiderstand",
+  "start_url": "/",
+  "display": "browser",
+  "background_color": "#ffffff",
+  "theme_color": "#ffffff",
+  "icons": [
+    {
+      "src": "/favicons/android-icon-36x36.png",
+      "sizes": "36x36",
+      "type": "image/png",
+      "density": "0.75"
+    },
+    {
+      "src": "/favicons/android-icon-48x48.png",
+      "sizes": "48x48",
+      "type": "image/png",
+      "density": "1.0"
+    },
+    {
+      "src": "/favicons/android-icon-72x72.png",
+      "sizes": "72x72",
+      "type": "image/png",
+      "density": "1.5"
+    },
+    {
+      "src": "/favicons/android-icon-96x96.png",
+      "sizes": "96x96",
+      "type": "image/png",
+      "density": "2.0"
+    },
+    {
+      "src": "/favicons/android-icon-144x144.png",
+      "sizes": "144x144",
+      "type": "image/png",
+      "density": "3.0"
+    },
+    {
+      "src": "/favicons/android-icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "density": "4.0"
+    }
+  ]
+}