Update MainContainer module documentation to match current route-guard responsibilities

Co-Authored-By: Codex <codex@openai.com>

src/views/MainContainer.vue

@@ -22,9 +22,8 @@
 //   imacat.yang@dsp.im (imacat), 2023/9/23
 /**
  * @module views/MainContainer Main application layout with
- *   header, navbar, and router view. Handles authentication
- *   checks via beforeRouteEnter and unsaved-changes confirmation
- *   via beforeRouteUpdate.
+ *   header, navbar, and router view. Handles unsaved-changes
+ *   confirmation via beforeRouteUpdate.
  */
 
 import { usePageAdminStore as usePageAdminStoreInGuard } from "@/stores/pageAdmin";