feat(comments): migrate to backend API

components/post-comment-count.tsx

@@ -1,17 +1,12 @@
 "use client"
 
-import { useCommentStore } from "@/store/comments"
 import { MessageCircle } from "lucide-react"
 
 interface PostCommentCountProps {
-  postId: string
+  count: number
 }
 
-export function PostCommentCount({ postId }: PostCommentCountProps) {
-  const count = useCommentStore(
-    (state) => state.comments.filter((comment) => comment.postId === postId).length,
-  )
-
+export function PostCommentCount({ count }: PostCommentCountProps) {
   return (
     <span className="flex items-center gap-1">
       <MessageCircle className="h-4 w-4" />