chore: import upstream snapshot with attribution

apps/www/scripts/validate-registries.mts

@@ -0,0 +1,58 @@
+import { promises as fs } from "fs"
+import path from "path"
+import { registrySchema } from "shadcn/schema"
+import { z } from "zod"
+
+const registriesIndexSchema = z.record(
+  z.string().regex(/^@[a-zA-Z0-9][a-zA-Z0-9-_]*$/),
+  z.string().refine((url) => url.includes("{name}"))
+)
+
+async function main() {
+  // 1. Validate the registries.json file.
+  const registriesFile = path.join(process.cwd(), "public/r/registries.json")
+  const content = await fs.readFile(registriesFile, "utf-8")
+  const data = JSON.parse(content)
+  const registries = registriesIndexSchema.parse(data)
+
+  // 2. Validate each registry endpoint.
+  const errors: string[] = []
+  for (const [name, url] of Object.entries(registries)) {
+    try {
+      const testUrl = url.replace("{name}", "registry")
+      const response = await fetch(testUrl)
+
+      if (!response.ok) {
+        errors.push(`${name}: HTTP ${response.status}`)
+        continue
+      }
+
+      const json = await response.json()
+      registrySchema.parse(json)
+      console.log(`✅ ${name}`)
+    } catch (error) {
+      if (error instanceof z.ZodError) {
+        errors.push(`${name}: ${error.message}`)
+        continue
+      }
+
+      errors.push(
+        `${name}: ${error instanceof Error ? error.message : String(error)}`
+      )
+    }
+  }
+
+  if (errors.length > 0) {
+    console.error("\n❌ Validation failed:")
+    errors.forEach((err) => console.error(`   ${err}`))
+    process.exit(1)
+  }
+
+  console.log("\n✅ All registries passed validation.")
+  process.exit(0)
+}
+
+main().catch((error) => {
+  console.error("❌ Error:", error instanceof Error ? error.message : error)
+  process.exit(1)
+})