Add PWA icons and manifest for iOS/Android home screen

site/public/manifest.webmanifest

@@ -0,0 +1,13 @@
+{
+  "name": "BincioActivity",
+  "short_name": "BincioActivity",
+  "description": "Your personal activity stats",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#0d0d0d",
+  "theme_color": "#0d0d0d",
+  "icons": [
+    { "src": "/icon-192.png", "sizes": "192x192", "type": "image/png" },
+    { "src": "/icon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "any maskable" }
+  ]
+}

site/src/layouts/Base.astro

@@ -43,6 +43,9 @@ try {
   <meta name="viewport" content="width=device-width, initial-scale=1" />
   <meta name="description" content={description} />
   <title>{title}</title>
+  <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
+  <link rel="manifest" href="/manifest.webmanifest" />
+  <meta name="theme-color" content="#0d0d0d" />
 
   <!-- Set theme before first paint to avoid flash -->
   <script is:inline>