feat: add comments

app/(app)/notifications/page.tsx

@@ -144,9 +144,13 @@ function NotificationRow({
       ? `/u/${selfHandle}/posts#post-${n.post_id}`
       : n.kind === "post_mention" && n.post_id && n.actor_handle
         ? `/u/${n.actor_handle}/posts#post-${n.post_id}`
-        : n.actor_handle
-          ? `/u/${n.actor_handle}`
-          : null;
+        : (n.kind === "post_comment" || n.kind === "comment_reply") &&
+            n.post_id &&
+            n.post_author_handle
+          ? `/u/${n.post_author_handle}/posts#post-${n.post_id}`
+          : n.actor_handle
+            ? `/u/${n.actor_handle}`
+            : null;
 
   return href ? (
     <li>
@@ -181,6 +185,10 @@ function messageFor(n: AppNotification): string {
     }
     case "post_mention":
       return "mentioned you in a post.";
+    case "post_comment":
+      return "commented on your post.";
+    case "comment_reply":
+      return "replied to your comment.";
     default:
       return "sent you a notification.";
   }