feat: add AI options to landing mock sidebar and wire database-backed stats & leaderboard with fresh zero states

src/app/dashboard/community/page.tsx

@@ -21,7 +21,9 @@ interface Doubt {
 }
 
 export default function CommunityPage() {
-  const { hasAccessTo, loading } = useActiveUser()
+  const { user, hasAccessTo, loading } = useActiveUser()
+  const currentUserName = user?.name || "Neha Verma"
+  const currentUserInitials = currentUserName.substring(0, 2).toUpperCase()
   const [activeFilter, setActiveFilter] = useState<'all' | 'my-doubts' | 'solved' | 'unsolved'>('all')
   const [searchQuery, setSearchQuery] = useState('')
   const [isAskModalOpen, setIsAskModalOpen] = useState(false)
@@ -58,8 +60,8 @@ export default function CommunityPage() {
     },
     {
       id: "3",
-      author: "Demo Student",
-      avatar: "DS",
+      author: currentUserName,
+      avatar: currentUserInitials,
       timeAgo: "1 day ago",
       subject: "Mathematics",
       topic: "Definite Integration",
@@ -73,7 +75,7 @@ export default function CommunityPage() {
   ]
 
   const filteredDoubts = mockDoubts.filter(d => {
-    if (activeFilter === 'my-doubts' && d.author !== "Demo Student") return false
+    if (activeFilter === 'my-doubts' && d.author !== currentUserName) return false
     if (activeFilter === 'solved' && !d.isSolved) return false
     if (activeFilter === 'unsolved' && d.isSolved) return false
     if (searchQuery && !d.title.toLowerCase().includes(searchQuery.toLowerCase())) return false