feat: add privacy, terms, and cookies pages

Footer and login legal links were stubs. Point them at real marketing
pages that follow the Figma content-page template.

messages/en/marketing.ts

@@ -40,6 +40,9 @@ import useCasesDetail from "./pages/useCasesDetail.json";
 import useCasesCompletedRules from "./pages/useCasesCompletedRules.json";
 import useCasesCompletedRule from "./pages/useCasesCompletedRule.json";
 import howItWorks from "./pages/howItWorks.json";
+import privacy from "./pages/privacy.json";
+import terms from "./pages/terms.json";
+import cookies from "./pages/cookies.json";
 import monitor from "./pages/monitor.json";
 import login from "./pages/login.json";
 import profile from "./pages/profile.json";
@@ -80,6 +83,9 @@ const marketingMessages = {
     useCasesCompletedRules,
     useCasesCompletedRule,
     howItWorks,
+    privacy,
+    terms,
+    cookies,
     monitor,
     login,
     profile,