feat(site): add real favicon set and strengthen SEO structured data

- Add favicon.ico (was 404), favicon-96x96.png, apple-touch-icon.png and
  192/512 PNG manifest icons generated from logo-icon.svg. Google's favicon
  crawler and browsers prefer ICO/PNG over the SVG-only setup, which is why
  no icon showed up in search results.
- Add an Organization JSON-LD node with logo + sameAs, and give the WebSite
  schema an alternateName, trailing-slash url, and inLanguage so Google has a
  clearer site-name/entity signal.
- Bump SoftwareApplication softwareVersion to 1.3.4.

Author: juliantanx

packages/site/src/app.html

@@ -11,8 +11,10 @@
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link href="https://fonts.googleapis.com/css2?family=Instrument+Sans:wght@400;500;600;700&family=Geist+Mono:wght@400;500;600&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600;8..60,700&display=swap" rel="stylesheet" />
+    <link rel="icon" href="/favicon.ico" sizes="32x32" />
+    <link rel="icon" href="/favicon-96x96.png" type="image/png" sizes="96x96" />
     <link rel="icon" href="/logo-icon.svg" type="image/svg+xml" />
-    <link rel="apple-touch-icon" href="/logo-icon.svg" />
+    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
     <link rel="manifest" href="/manifest.json" />
     <link rel="dns-prefetch" href="https://img.shields.io" />
     %sveltekit.head%

packages/site/src/routes/+layout.svelte

@@ -64,12 +64,26 @@
       '@type': 'Organization',
       name: 'AIUsage'
     },
-    softwareVersion: '1.3.2',
+    softwareVersion: '1.3.4',
     downloadUrl: 'https://www.npmjs.com/package/@juliantanx/aiusage',
     featureList: zh
       ? 'Token用量追踪,费用估算与分析,模型使用排名,工具调用分析,项目维度统计,配额监控,多设备同步,数据导出'
       : 'Token Usage Tracking,Cost Estimation,Model Usage Ranking,Tool Call Analytics,Project-Level Stats,Quota Monitoring,Multi-Device Sync,Data Export'
   })}</script>`}
+
+  <!-- Organization: gives Google an explicit site entity + logo signal -->
+  {@html `<script type="application/ld+json">${JSON.stringify({
+    '@context': 'https://schema.org',
+    '@type': 'Organization',
+    name: 'AIUsage',
+    url: 'https://aiusage.jtanx.com/',
+    logo: 'https://aiusage.jtanx.com/web-app-manifest-512x512.png',
+    sameAs: [
+      'https://github.com/juliantanx/aiusage',
+      'https://www.npmjs.com/package/@juliantanx/aiusage',
+      'https://hub.docker.com/r/juliantanx/aiusage'
+    ]
+  })}</script>`}
 </svelte:head>
 
 <div class="site">

packages/site/src/routes/+page.svelte

@@ -120,7 +120,9 @@
     '@context': 'https://schema.org',
     '@type': 'WebSite',
     name: 'AIUsage',
-    url: 'https://aiusage.jtanx.com',
+    alternateName: 'AIUsage — AI Coding Usage Analytics',
+    url: 'https://aiusage.jtanx.com/',
+    inLanguage: zh ? 'zh-CN' : 'en',
     description: zh
       ? '追踪 Claude Code、Codex、Cursor 等 AI 编程工具的 Token 用量、费用和使用模式。'
       : 'Track token consumption, costs, and usage patterns across Claude Code, Codex, Cursor, and more.',

packages/site/static/apple-touch-icon.png

@@ -7,6 +7,18 @@
   "background_color": "#faf8f5",
   "theme_color": "#0d9488",
   "icons": [
+    {
+      "src": "/web-app-manifest-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/web-app-manifest-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any"
+    },
     {
       "src": "/logo-icon.svg",
       "sizes": "any",