feat: add policy pages

app/(legal)/layout.tsx

@@ -0,0 +1,20 @@
+import { SiteHeader } from "@/components/site-header";
+
+/**
+ * Minimal layout for legal / informational pages (Privacy Policy, Terms of
+ * Use, Data Deletion). Just the global SiteHeader and the content — no
+ * sidebar, no bottom nav, no in-page reading affordances. Keeps these
+ * pages focused on the text they exist to deliver.
+ */
+export default function LegalLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <div className="flex-1 flex flex-col">
+      <SiteHeader />
+      {children}
+    </div>
+  );
+}