fix(文案): 不再用「他」称呼学生，男生女生看着都别扭；老师看主页的按钮改成「智能分析」「提交记录」

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/oj/problem/detail.vue

@@ -125,7 +125,7 @@ watch(
   },
 )
 const drawerLabel = (key: DrawerKey) =>
-  key === "submission" && teacherCollab.value ? "他的提交" : DRAWER_TITLE[key]
+  key === "submission" && teacherCollab.value ? "学生的提交" : DRAWER_TITLE[key]
 
 function toggleDrawer(key: DrawerKey) {
   drawer.value = drawer.value === key ? null : key