fix: restore web chat delete endpoint

front/src/App.vue

@@ -293,10 +293,10 @@ async function deleteChatMessage(item: ChatItem, ban = false) {
   if (!await askConfirm(action, `确认${action}这条消息？`, { confirmText: action, danger: true })) return;
   item._deleting = true;
   try {
-    await fetchJson(`/api/chat/${item.id}/delete`, {
+    await fetchJson(`/api/messages/${item.id}/delete`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ ban })
+      body: JSON.stringify({ ban_user: ban })
     });
     Object.assign(item, { deleted: true, manually_deleted: true });
     await loadStats();