Add developer API, Prometheus metrics, and community links

app/dev/api/page.tsx

@@ -0,0 +1,23 @@
+import type { Metadata } from "next";
+import { Header, Footer } from "@/components/Shell";
+import { DeveloperPanel } from "@/components/DeveloperPanel";
+import { user } from "@/lib/supabase";
+
+export const metadata: Metadata = {
+  title: "Developer API",
+  description: "Create and manage scoped MineGeo API keys.",
+};
+export const dynamic = "force-dynamic";
+
+export default async function DeveloperApiPage() {
+  const account = await user();
+  return (
+    <>
+      <Header />
+      <main className="section page-content">
+        <DeveloperPanel signedIn={Boolean(account)} />
+      </main>
+      <Footer />
+    </>
+  );
+}