refactor(lineage): migrate life-and-lineage to lineage subdomain redirect

Move the marketing landing page content to the new  route group
served at , and convert the legacy
 route into a 308 permanent
redirect to the new subdomain.

- Add  hosting the migrated marketing page.
- Extract shared landing content and the redirect target into
  , with unit tests asserting the
  redirect destination.

src/routes/marketing/life-and-lineage.tsx

@@ -1,51 +1,27 @@
-import { A } from "@solidjs/router";
-import { PageHead } from "~/components/PageHead";
-import SimpleParallax from "~/components/SimpleParallax";
-import DownloadOnAppStoreDark from "~/components/icons/DownloadOnAppStoreDark";
+/**
+ * Legacy Life and Lineage marketing route — now a 308 permanent redirect to
+ * the Lineage subdomain (task 08).
+ *
+ * The marketing content has been migrated to `src/routes/lineage/index.tsx`
+ * served at `lineage.freno.me` (vercel.json host rewrites map the subdomain to
+ * the `/lineage/*` internal prefix). Keeping this route as a permanent (308)
+ * server-side redirect — rather than a client `<Navigate>` — preserves SEO
+ * equity and gives installed / linked URLs a stable resolution path.
+ *
+ * Implemented as a SolidStart API route (`GET` handler returning a Response)
+ * so the redirect happens before any rendering; the route no longer ships a
+ * page component. The redirect target is centralized in
+ * `~/routes/lineage/landing-content.ts` (`LEGACY_REDIRECT_TARGET`) so the
+ * unit test can assert the destination without importing this server module.
+ */
+import { LEGACY_REDIRECT_TARGET } from "~/routes/lineage/landing-content";
 
-export default function LifeAndLineageMarketing() {
-  return (
-    <>
-      <PageHead
-        title="Life and Lineage"
-        description="A dark fantasy adventure mobile game. Download Life and Lineage on the App Store and Google Play."
-      />
-      <SimpleParallax>
-        <div class="flex h-full flex-col items-center justify-center text-white">
-          <div>
-            <img
-              src="/LineageIcon.png"
-              alt="Lineage App Icon"
-              height={128}
-              width={128}
-              class="object-cover object-center"
-            />
-          </div>
-          <h1 class="mb-4 text-center text-5xl font-bold">Life and Lineage</h1>
-          <p class="mb-8 text-xl">A dark fantasy adventure</p>
-          <div class="flex space-x-4">
-            <a
-              class="my-auto transition-all duration-200 ease-out active:scale-95"
-              href="https://apps.apple.com/us/app/life-and-lineage/id6737252442"
-              target="_blank"
-              rel="noopener noreferrer"
-            >
-              <DownloadOnAppStoreDark size={50} />
-            </a>
-            <A
-              href="/downloads"
-              class="transition-all duration-200 ease-out active:scale-95"
-            >
-              <img
-                src="/google-play-badge.png"
-                alt="google-play"
-                width={180}
-                height={60}
-              />
-            </A>
-          </div>
-        </div>
-      </SimpleParallax>
-    </>
-  );
+export function GET() {
+  return new Response(null, {
+    status: 308,
+    headers: {
+      Location: LEGACY_REDIRECT_TARGET,
+      "Cache-Control": "public, max-age=0, must-revalidate"
+    }
+  });
 }