refactor: move Hall of Fame and Open Source badge to main landing page

- Removes ContributorsPanel and OpenSourceBadge from dashboard/chat view
- Removes Trophy button from Header
- Adds them to the main landing page (frontend/src/app/page.tsx) instead

frontend/src/app/dashboard/page.tsx

@@ -8,8 +8,6 @@ import Header from "@/components/layout/Header";
 import DocumentSidebar from "@/components/document/DocumentSidebar";
 import ChatPanel from "@/components/chat/ChatPanel";
 import PDFViewer from "@/components/document/PDFViewer";
-import ContributorsPanel from "@/components/layout/ContributorsPanel";
-import OpenSourceBadge from "@/components/layout/OpenSourceBadge";
 
 export interface DocInfo {
   id: string;
@@ -31,7 +29,6 @@ export default function DashboardPage() {
   const [pdfPage, setPdfPage] = useState(1);
   const [sidebarOpen, setSidebarOpen] = useState(true);
   const [viewerOpen, setViewerOpen] = useState(true);
-  const [hallOfFameOpen, setHallOfFameOpen] = useState(false);
   const [connectionError, setConnectionError] = useState("");
 
   // Auth guard
@@ -84,17 +81,11 @@ export default function DashboardPage() {
 
   return (
     <div className="h-screen flex flex-col overflow-hidden">
-      {/* Hall of Fame Modal */}
-      {hallOfFameOpen && (
-        <ContributorsPanel onClose={() => setHallOfFameOpen(false)} />
-      )}
-
       <Header
         sidebarOpen={sidebarOpen}
         onToggleSidebar={() => setSidebarOpen(!sidebarOpen)}
         viewerOpen={viewerOpen}
         onToggleViewer={() => setViewerOpen(!viewerOpen)}
-        onOpenContributors={() => setHallOfFameOpen(true)}
       />
 
       {connectionError && (
@@ -145,9 +136,6 @@ export default function DashboardPage() {
           </div>
         )}
       </div>
-
-      {/* Open Source floating badge */}
-      <OpenSourceBadge onOpenHallOfFame={() => setHallOfFameOpen(true)} />
     </div>
   );
 }

frontend/src/app/page.tsx

@@ -1,15 +1,18 @@
 "use client";
 
-import { useEffect } from "react";
+import { useEffect, useState } from "react";
 import { useRouter } from "next/navigation";
 import { useAuth } from "@/lib/auth";
 import { FileText, MessageSquare, Brain, Shield, Zap, Search } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import Link from "next/link";
+import ContributorsPanel from "@/components/layout/ContributorsPanel";
+import OpenSourceBadge from "@/components/layout/OpenSourceBadge";
 
 export default function HomePage() {
   const { user, loading } = useAuth();
   const router = useRouter();
+  const [hallOfFameOpen, setHallOfFameOpen] = useState(false);
 
   useEffect(() => {
     if (!loading && user) {
@@ -116,6 +119,14 @@ export default function HomePage() {
       <footer className="text-center py-6 text-xs text-muted-foreground border-t border-border/50">
         Built with FastAPI • LangChain • ChromaDB • HuggingFace • Next.js
       </footer>
+
+      {/* Hall of Fame Modal */}
+      {hallOfFameOpen && (
+        <ContributorsPanel onClose={() => setHallOfFameOpen(false)} />
+      )}
+
+      {/* Open Source floating badge */}
+      <OpenSourceBadge onOpenHallOfFame={() => setHallOfFameOpen(true)} />
     </div>
   );
 }

frontend/src/components/layout/Header.tsx

@@ -20,7 +20,6 @@ import {
   LogOut,
   Moon,
   Sun,
-  Trophy,
 } from "lucide-react";
 import { useState } from "react";
 
@@ -29,10 +28,9 @@ interface HeaderProps {
   onToggleSidebar: () => void;
   viewerOpen: boolean;
   onToggleViewer: () => void;
-  onOpenContributors: () => void;
 }
 
-export default function Header({ sidebarOpen, onToggleSidebar, viewerOpen, onToggleViewer, onOpenContributors }: HeaderProps) {
+export default function Header({ sidebarOpen, onToggleSidebar, viewerOpen, onToggleViewer }: HeaderProps) {
   const { user, logout } = useAuth();
   const router = useRouter();
   const [isDark, setIsDark] = useState(true);
@@ -72,22 +70,6 @@ export default function Header({ sidebarOpen, onToggleSidebar, viewerOpen, onTog
 
       {/* Right */}
       <div className="flex items-center gap-2">
-        {/* Hall of Fame */}
-        <Button
-          variant="ghost"
-          size="sm"
-          className="h-8 gap-1.5 px-2.5 text-xs hidden sm:flex hover:text-primary"
-          onClick={onOpenContributors}
-          title="Hall of Fame — Contributors"
-        >
-          <Trophy className="w-3.5 h-3.5 text-yellow-500" />
-          <span>Hall of Fame</span>
-        </Button>
-        {/* Mobile icon only */}
-        <Button variant="ghost" size="icon" className="h-8 w-8 sm:hidden" onClick={onOpenContributors} title="Hall of Fame">
-          <Trophy className="w-4 h-4 text-yellow-500" />
-        </Button>
-
         <Button variant="ghost" size="icon" className="h-8 w-8" onClick={onToggleViewer} title={viewerOpen ? "Close viewer" : "Open viewer"}>
           {viewerOpen ? <PanelRightClose className="w-4 h-4" /> : <PanelRightOpen className="w-4 h-4" />}
         </Button>