操作审计（Audit Log）

frontend/src/components/Layout.vue

@@ -34,10 +34,13 @@
           <el-menu-item index="/study/imp/inventory">库存</el-menu-item>
           <el-menu-item index="/study/imp/products">产品</el-menu-item>
           <el-menu-item index="/study/imp/batches">批次</el-menu-item>
-          <el-menu-item index="/study/imp/transactions">交易台账</el-menu-item>
+        <el-menu-item index="/study/imp/transactions">交易台账</el-menu-item>
         </el-sub-menu>
         <el-menu-item index="/study/finance">费用</el-menu-item>
         <el-menu-item index="/study/faq">知识库</el-menu-item>
+        <el-menu-item v-if="isAdmin || isPm" index="/study/audit-logs">
+          审计日志
+        </el-menu-item>
       </template>
     </el-menu>
   </el-aside>
@@ -59,6 +62,7 @@ const auth = useAuthStore();
 const study = useStudyStore();
 const router = useRouter();
 const isAdmin = computed(() => auth.user?.role === "ADMIN");
+const isPm = computed(() => auth.user?.role === "PM" || study.currentStudyRole === "PM");
 
 const onLogout = () => {
   auth.logout();