feat: add daily product intelligence and versioned site assets (#64)

Adds privacy-safe aggregate product intelligence, reviewed/versioned website assets, and a dispatch-only rollout until the dedicated Sentry token is verified. Independent review blockers were fixed in 8bc47e4; app checks, website production build, Android CI, and iOS CI are green.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

website/app/sitemap.ts

@@ -0,0 +1,39 @@
+import type { MetadataRoute } from 'next'
+
+export default function sitemap(): MetadataRoute.Sitemap {
+  const base = 'https://opencode.agentlabs.cc'
+  const now = new Date()
+
+  return [
+    {
+      url: base,
+      lastModified: now,
+      changeFrequency: 'weekly',
+      priority: 1,
+    },
+    {
+      url: `${base}/privacy`,
+      lastModified: now,
+      changeFrequency: 'monthly',
+      priority: 0.6,
+    },
+    {
+      url: `${base}/terms`,
+      lastModified: now,
+      changeFrequency: 'monthly',
+      priority: 0.6,
+    },
+    {
+      url: `${base}/support`,
+      lastModified: now,
+      changeFrequency: 'monthly',
+      priority: 0.7,
+    },
+    {
+      url: `${base}/docs`,
+      lastModified: now,
+      changeFrequency: 'weekly',
+      priority: 0.8,
+    },
+  ]
+}