修复(权限管理)：统一 PM 系统导航与权限校验

frontend/src/views/WebWorkbenchEntry.vue

@@ -32,8 +32,8 @@
         </div>
       </div>
 
-      <!-- 管理后台/项目管理控制卡片 - 常驻左侧底部 -->
-      <div class="sidebar-admin">
+      <!-- ADMIN / PM 可进入系统管理，其他角色仅可选择项目 -->
+      <div v-if="canEnterManagement" class="sidebar-admin">
         <button class="admin-action-card" type="button" @click="enterManagement">
           <span class="admin-glow-layer" aria-hidden="true"></span>
           <div class="admin-card-head">
@@ -41,8 +41,8 @@
               <el-icon><Monitor /></el-icon>
             </div>
             <div class="admin-text-box">
-              <span class="admin-kicker">{{ isAdmin ? "ADMIN SYSTEM" : "STUDY PORTAL" }}</span>
-              <strong>{{ isAdmin ? "管理后台" : "项目管理" }}</strong>
+              <span class="admin-kicker">{{ isAdmin ? "ADMIN SYSTEM" : "SYSTEM MANAGEMENT" }}</span>
+              <strong>系统管理</strong>
             </div>
           </div>
           <p class="admin-desc">
@@ -206,18 +206,22 @@ const loading = ref(false);
 const loggingOut = ref(false);
 const isTransitioning = ref(false);
 const isAdmin = computed(() => isSystemAdmin(auth.user));
+const canEnterManagement = computed(() =>
+  isAdmin.value || projects.value.some((project) => project.role_in_study === "PM"),
+);
 
 const userDisplayName = computed(
   () => auth.user?.full_name || auth.user?.username || auth.user?.email || TEXT.common.labels.userFallback,
 );
 const userInitial = computed(() => userDisplayName.value.charAt(0).toUpperCase() || TEXT.common.labels.userInitialFallback);
 
-const entryDescription = computed(() =>
-  isAdmin.value
-    ? "进入管理后台处理账号、授权 and 系统配置，或选择项目进入项目工作区。"
-    : "选择本次要进入的项目，或进入项目管理查看您已授权的项目范围。",
-);
-const managementActionLabel = computed(() => isAdmin.value ? "进入管理后台" : "进入项目管理");
+const entryDescription = computed(() => {
+  if (!canEnterManagement.value) return "选择本次要进入的项目进入项目工作区。";
+  return isAdmin.value
+    ? "进入系统管理处理账号、授权及系统配置，或选择项目进入项目工作区。"
+    : "进入系统管理查看您已授权的项目范围，或选择项目进入项目工作区。";
+});
+const managementActionLabel = computed(() => canEnterManagement.value ? "进入系统管理" : "");
 
 const statusLabel = (status: string | undefined) =>
   status ? TEXT.enums.projectStatus[status as keyof typeof TEXT.enums.projectStatus] || status : "未知";
@@ -235,9 +239,18 @@ const loadProjects = async () => {
 };
 
 const enterManagement = async () => {
+  if (!canEnterManagement.value) return;
   isTransitioning.value = true;
   window.setTimeout(async () => {
-    studyStore.clearCurrentStudy();
+    if (isAdmin.value) {
+      studyStore.clearCurrentStudy();
+    } else {
+      const pmProject = projects.value.find((project) => project.role_in_study === "PM");
+      if (pmProject) {
+        studyStore.setCurrentStudy(pmProject);
+        await studyStore.loadCurrentStudyPermissions().catch(() => {});
+      }
+    }
     await router.push(isAdmin.value ? "/admin/users" : "/admin/projects").catch(() => {});
     isTransitioning.value = false;
   }, 300);
@@ -461,7 +474,7 @@ onMounted(() => {
   color: #ef4444;
 }
 
-/* 常驻管理后台卡片（精致浅色流光） */
+/* 常驻系统管理卡片（精致浅色流光） */
 .sidebar-admin {
   width: 100%;
 }