fix: replace mockUser/mockComparisons with proper local variables in profile page

src/app/(main)/profile/page.tsx

@@ -33,18 +33,26 @@ interface UserStats {
 }
 
 export default function ProfilePage() {
+  // TODO: Replace with real auth session data
+  const user = { name: "Demo User", email: "demo@example.com", avatar: "" }
+  const stats = [
+    { label: "Comparisons", value: "0", icon: BarChart3 },
+    { label: "Total Views", value: "0", icon: Eye },
+  ]
+  const comparisons: Comparison[] = []
+
   return (
     <div className="max-w-4xl mx-auto p-4 sm:p-6 space-y-8">
       <div className="flex items-center gap-6">
         <Avatar className="size-20">
-          <AvatarImage src={mockUser.avatar} />
+          <AvatarImage src={user.avatar} />
           <AvatarFallback className="text-2xl bg-primary/10 text-primary font-semibold">
-            {mockUser.name.split(" ").map((n) => n[0]).join("")}
+            {user.name.split(" ").map((n) => n[0]).join("")}
           </AvatarFallback>
         </Avatar>
         <div className="space-y-1.5">
-          <h1 className="text-2xl font-bold">{mockUser.name}</h1>
+          <h1 className="text-2xl font-bold">{user.name}</h1>
-          <p className="text-muted-foreground">{mockUser.email}</p>
+          <p className="text-muted-foreground">{user.email}</p>
         </div>
       </div>
 
@@ -75,9 +83,9 @@ export default function ProfilePage() {
           </Link>
         </div>
 
-        {mockComparisons.length > 0 ? (
+        {comparisons.length > 0 ? (
           <div className="grid gap-4 sm:grid-cols-2">
-            {mockComparisons.map((comparison) => (
+            {comparisons.map((comparison) => (
               <Link key={comparison.id} href={`/compare/${comparison.id}`}>
                 <Card className="h-full transition-all hover:border-primary hover:shadow-md">
                   <CardHeader className="pb-3">