中文：收口权限与中心/立项配置改造

frontend/src/components/Layout.vue

@@ -47,13 +47,10 @@
             <el-icon><Calendar /></el-icon>
             <span>{{ TEXT.menu.projectMilestones }}</span>
           </el-menu-item>
-          <el-sub-menu index="fees">
-            <template #title>
-              <el-icon><Coin /></el-icon>
-              <span>{{ TEXT.menu.finance }}</span>
-            </template>
-            <el-menu-item index="/fees/contracts">{{ TEXT.menu.feeContracts }}</el-menu-item>
-          </el-sub-menu>
+          <el-menu-item index="/fees/contracts">
+            <el-icon><Coin /></el-icon>
+            <span>{{ TEXT.menu.feeContracts }}</span>
+          </el-menu-item>
           <el-sub-menu index="materials">
             <template #title>
               <el-icon><Box /></el-icon>
@@ -226,7 +223,6 @@ const study = useStudyStore();
 const router = useRouter();
 const route = useRoute();
 const isAdmin = computed(() => auth.user?.role === "ADMIN");
-const isPm = computed(() => auth.user?.role === "PM" || study.currentStudyRole === "PM");
 const isCollapsed = ref(localStorage.getItem("ctms_sidebar_collapsed") === "1");
 
 /* 动态设置 body 上的侧边栏宽度 CSS 变量，用于全局弹窗定位偏移 */