R5: marketing landing — light-theme public site at /

A new (marketing) route group with its own LIGHT layout (slate palette +
marketing coral #E95656 + periwinkle cards on near-white), the inverse of
the dark app. The middleware rewrites '/' → /marketing for logged-out
visitors (keyed on the session cookie / Clerk __session); authed users
fall through to the workspace app unchanged.

Built to the measured marketing system with OUR copy and honest claims —
NO SOC 2 / compliance badges: floating white pill nav, the 75px/800/-3px
display hero with a single coral keyword span, dual pill CTAs (coral
primary / white-bordered secondary), trust badges ('free credits',
'no credit card', 'self-hostable & air-gapped'), periwinkle feature
cards, a structural-security section (approval-gated, broker-held creds,
air-gappable — our real differentiators), an interactive FAQ accordion,
CTA band, and footer.

E2E (p7-marketing): renders for logged-out visitors, FAQ accordion works,
asserts NO SOC 2 claim, and an axe pass (coral CTAs sized to clear the
AA large-text threshold). p0-shell updated: logged-out '/' now shows
marketing with a Sign-in link to /login.

Co-Authored-By: Claude Fable 5 <[email protected]>

frontend/src/app/(marketing)/marketing/page.tsx

@@ -0,0 +1,35 @@
+import type { Metadata } from "next";
+
+import { Faq } from "@/components/marketing/Faq";
+import { MarketingNav } from "@/components/marketing/Nav";
+import {
+  CtaBand,
+  Features,
+  Footer,
+  Hero,
+  Security,
+} from "@/components/marketing/Sections";
+
+export const metadata: Metadata = {
+  title: "Clawmates — AI coworkers that ship work",
+  description:
+    "Collaborative AI agents with a human-in-the-loop safety layer. Run them in the cloud or fully air-gapped on your own hardware.",
+};
+
+// The public marketing landing (served at "/" for logged-out visitors via
+// the middleware rewrite; authed users get the workspace app instead).
+export default function MarketingPage() {
+  return (
+    <>
+      <MarketingNav />
+      <main>
+        <Hero />
+        <Features />
+        <Security />
+        <Faq />
+        <CtaBand />
+      </main>
+      <Footer />
+    </>
+  );
+}