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/scripts/verify-screenshots.mjs

@@ -0,0 +1,18 @@
+import { createHash } from "node:crypto"
+import { readFile } from "node:fs/promises"
+import { resolve } from "node:path"
+
+const root = resolve(import.meta.dirname, "..")
+const directory = resolve(root, "public/screenshots/v0.4.7")
+const manifest = JSON.parse(await readFile(resolve(directory, "manifest.json"), "utf8"))
+
+for (const screenshot of manifest.screenshots) {
+  const file = resolve(directory, screenshot.file)
+  const contents = await readFile(file)
+  const hash = createHash("sha256").update(contents).digest("hex")
+  if (hash !== screenshot.sha256) {
+    throw new Error(`${screenshot.file} does not match its approved Play checksum`)
+  }
+}
+
+console.log(`Verified ${manifest.screenshots.length} approved screenshots.`)