feat(landing): rebuild as Next.js app with live product mocks

Replaces the static HTML page with a Next.js 15 + Tailwind v4 + Motion
app. The hero renders the dashboard itself - live tiles, ticking clock,
wandering metrics, pulsing status dots - instead of screenshots. Adds a
playable four-renderer switcher (bento/cards/index/console) with layout
animations, live monitor/domain/system mocks, and a cycling alert feed.

Vercel project dash is now git-connected with root dir landing/; pushes
deploy automatically. Canonical alias: dash-homelab.vercel.app.

Authored By: TDvorak <[email protected]>

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

landing/components/Reveal.tsx

@@ -0,0 +1,26 @@
+"use client";
+
+import { motion } from "motion/react";
+import type { ReactNode } from "react";
+
+export function Reveal({
+  children,
+  delay = 0,
+  className,
+}: {
+  children: ReactNode;
+  delay?: number;
+  className?: string;
+}) {
+  return (
+    <motion.div
+      className={className}
+      initial={{ opacity: 0, y: 16 }}
+      whileInView={{ opacity: 1, y: 0 }}
+      viewport={{ once: true, margin: "-80px" }}
+      transition={{ duration: 0.55, delay, ease: [0.2, 0, 0, 1] }}
+    >
+      {children}
+    </motion.div>
+  );
+}