feat(web): overhaul frontend with cyber-intelligence design and interactive topology

apps/web/app/layout.tsx

@@ -2,9 +2,11 @@ import type { Metadata } from "next";
 import "./globals.css";
 import Header from "@/components/Header";
 import Sidebar from "@/components/Sidebar";
+import Link from "next/link";
+import { Database, Activity, Sparkles, Terminal } from "lucide-react";
 
 export const metadata: Metadata = {
-  title: "MCPedia — Knowledge base for humans and AI agents",
+  title: "MCPedia — Knowledge Base for Humans and AI Agents",
   description:
     "A content-first knowledge base. Humans read the Web UI; AI agents use the MCP server. Both share one Core.",
 };
@@ -35,16 +37,20 @@ export default function RootLayout({
           }}
         />
       </head>
-      <body className="min-h-screen bg-[var(--bg-app)] text-[var(--text-secondary)] font-sans antialiased selection:bg-[var(--brand)]/30 selection:text-white flex flex-col transition-colors duration-150">
+      <body className="min-h-screen bg-[var(--bg-app)] text-[var(--text-secondary)] font-sans antialiased selection:bg-[var(--brand)]/30 selection:text-white flex flex-col transition-colors duration-150 tech-grid-bg relative overflow-x-hidden">
+        {/* Top ambient radial glow effect */}
+        <div className="absolute top-0 left-1/2 -translate-x-1/2 w-[48rem] h-64 bg-indigo-500/10 dark:bg-indigo-600/15 blur-[120px] pointer-events-none rounded-full" />
+        <div className="absolute top-48 left-1/4 w-80 h-80 bg-cyan-500/5 dark:bg-cyan-500/10 blur-[100px] pointer-events-none rounded-full" />
+
         <div hidden>
           <div id="a11y-live-region" aria-live="polite" aria-atomic="true" />
         </div>
 
         <Header />
 
-        <div className="mx-auto max-w-7xl w-full flex-1 flex flex-col">
+        <div className="mx-auto max-w-7xl w-full flex-1 flex flex-col relative z-10">
           <div className="flex flex-1">
-            <aside className="hidden lg:block w-72 shrink-0 border-r border-[var(--border-color)] sticky top-14 h-[calc(100vh-3.5rem)] overflow-y-auto bg-[var(--bg-app)]">
+            <aside className="hidden lg:block w-72 shrink-0 border-r border-[var(--border-color)] sticky top-15 h-[calc(100vh-3.75rem)] overflow-y-auto bg-[var(--bg-app)]/80 backdrop-blur-md">
               <Sidebar />
             </aside>
             <main className="flex-1 min-w-0">
@@ -54,6 +60,30 @@ export default function RootLayout({
             </main>
           </div>
         </div>
+
+        {/* Global Telemetry & Status Footer */}
+        <footer className="no-print border-t border-[var(--border-color)] bg-[var(--bg-surface)]/60 backdrop-blur-md py-4 text-xs text-[var(--text-dim)] relative z-10">
+          <div className="mx-auto max-w-7xl px-4 sm:px-8 flex flex-col sm:flex-row items-center justify-between gap-3 font-mono">
+            <div className="flex items-center gap-2">
+              <span className="w-2 h-2 rounded-full bg-emerald-500 animate-pulse" />
+              <span>MCPedia Intelligence Engine</span>
+              <span>·</span>
+              <span className="text-[var(--text-muted)]">PostgreSQL 16 Core</span>
+            </div>
+
+            <div className="flex items-center gap-4 text-[11px] text-[var(--text-muted)]">
+              <Link href="/search" className="hover:text-[var(--brand)] dark:hover:text-[var(--accent)] transition-colors">
+                RRF Hybrid Search
+              </Link>
+              <span>·</span>
+              <Link href="/export/pdf" className="hover:text-[var(--brand)] dark:hover:text-[var(--accent)] transition-colors">
+                Publication PDF
+              </Link>
+              <span>·</span>
+              <span className="text-[var(--text-dim)]">Native MCP :4021</span>
+            </div>
+          </div>
+        </footer>
       </body>
     </html>
   );