fix: Use relative paths for favicons and manifest to support GitHub

Author: realjck

index.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>OpenRando - Quantum Randonautica</title>
-    <link rel="icon" type="image/png" sizes="192x192" href="/favicon192.png" />
+    <link rel="icon" type="image/png" sizes="192x192" href="favicon192.png" />
     <link rel="manifest" href="/manifest.json" />
     <meta name="theme-color" content="#0a0a0a" />
   </head>

public/manifest.json

@@ -2,18 +2,18 @@
   "name": "OpenRando",
   "short_name": "OpenRando",
   "description": "Quantum Randonautica App",
-  "start_url": "/",
+  "start_url": ".",
   "display": "standalone",
   "background_color": "#0a0a0a",
   "theme_color": "#0a0a0a",
   "icons": [
     {
-      "src": "/favicon192.png",
+      "src": "favicon192.png",
       "sizes": "192x192",
       "type": "image/png"
     },
     {
-      "src": "/favicon512.png",
+      "src": "favicon512.png",
       "sizes": "512x512",
       "type": "image/png"
     }