polish(frontend): update landing page copy and metadata

frontend/app/layout.tsx

@@ -25,7 +25,7 @@ export const metadata: Metadata = {
     default: "Fediversion",
     template: "%s | Fediversion",
   },
-  description: "The ultimate HeadyVersion platform for all jam bands",
+  description: "The definitive archive for the modern jam era. Track setlists, find sit-ins, and build your profile.",
 };
 
 export default function RootLayout({

frontend/app/page.tsx

@@ -32,18 +32,18 @@ export default async function HomePage() {
             Fediversion
           </h1>
           <p className="text-2xl text-muted-foreground max-w-2xl mx-auto font-light leading-relaxed">
-            The unified platform for the jam scene.
+            The definitive archive for the modern jam era.
             <br />
-            <span className="text-foreground font-medium">One account. All your bands.</span>
+            <span className="text-foreground font-medium">Every setlist. Every sit-in. One profile.</span>
           </p>
         </div>
 
         <div className="flex justify-center gap-4 pt-4">
           <Button asChild size="xl" className="h-14 px-8 text-lg rounded-full">
-            <Link href="/register">Join the Community</Link>
+            <Link href="/register">Get on the Bus</Link>
           </Button>
           <Button asChild variant="outline" size="xl" className="h-14 px-8 text-lg rounded-full">
-            <Link href="/shows">Find a Show</Link>
+            <Link href="/shows">Explore the Archive</Link>
           </Button>
         </div>
       </section>
@@ -57,22 +57,22 @@ export default async function HomePage() {
           <div className="space-y-2">
             <h2 className="text-3xl font-bold tracking-tight">Community Powered</h2>
             <p className="text-lg text-muted-foreground">
-              Built by fans, for fans. Track your history, rate jams, and find your flock.
+              Built by heads, for heads. Track your stats, rate the heat, and find your crew.
             </p>
           </div>
 
           <div className="grid grid-cols-1 md:grid-cols-3 gap-8 pt-4">
             <StatItem
-              value={verticals.length > 0 ? verticals.length.toString() : "25+"}
-              label="Bands Covered"
+              value={verticals.length > 0 ? verticals.length.toString() : "50+"}
+              label="Bands Indexed"
             />
             <StatItem
-              value="∞"
-              label="Jams Indexed"
+              value="10k+"
+              label="Shows Tracked"
             />
             <StatItem
               value="1"
-              label="Universal Account"
+              label="Unified Profile"
             />
           </div>
         </div>