新增空闲锁屏、修复401等问题，新增文件版本管理、共享库等占位符

frontend/src/components/Layout.vue

@@ -54,6 +54,10 @@
             </template>
             <el-menu-item index="/drug/shipments">{{ TEXT.menu.drugShipments }}</el-menu-item>
           </el-sub-menu>
+          <el-menu-item index="/file-versions">
+            <el-icon><Files /></el-icon>
+            <span>{{ TEXT.menu.fileVersionManagement }}</span>
+          </el-menu-item>
           <el-menu-item index="/startup/feasibility-ethics">
             <el-icon><Calendar /></el-icon>
             <span>{{ TEXT.menu.startupFeasibilityEthics }}</span>
@@ -77,10 +81,12 @@
           <el-sub-menu index="knowledge">
             <template #title>
               <el-icon><Notebook /></el-icon>
-              <span>{{ TEXT.menu.knowledge }}</span>
+              <span>{{ TEXT.menu.sharedLibrary }}</span>
             </template>
             <el-menu-item index="/knowledge/medical-consult">{{ TEXT.menu.knowledgeMedicalConsult }}</el-menu-item>
             <el-menu-item index="/knowledge/notes">{{ TEXT.menu.knowledgeNotes }}</el-menu-item>
+            <el-menu-item index="/knowledge/support-files">{{ TEXT.menu.knowledgeSupportFiles }}</el-menu-item>
+            <el-menu-item index="/knowledge/instruction-files">{{ TEXT.menu.knowledgeInstructionFiles }}</el-menu-item>
           </el-sub-menu>
         </template>
       </el-menu>
@@ -151,7 +157,7 @@ import StudySelector from "./StudySelector.vue";
 import { TEXT } from "../locales";
 import { 
   Monitor, User, Suitcase, House, Calendar, Flag, ChatDotRound,
-  CircleCheck, Box, Coin, Notebook, Document, ArrowDown, SwitchButton
+  CircleCheck, Box, Coin, Notebook, Document, ArrowDown, SwitchButton, Files
 } from "@element-plus/icons-vue";
 
 const auth = useAuthStore();
@@ -167,6 +173,7 @@ const activeMenu = computed(() => {
   if (path.startsWith("/finance/contracts")) return "/finance/contracts";
   if (path.startsWith("/finance/special")) return "/finance/special";
   if (path.startsWith("/drug/shipments")) return "/drug/shipments";
+  if (path.startsWith("/file-versions")) return "/file-versions";
   if (path.startsWith("/startup/feasibility") || path.startsWith("/startup/ethics")) return "/startup/feasibility-ethics";
   if (path.startsWith("/startup/meeting-auth") || path.startsWith("/startup/kickoff") || path.startsWith("/startup/training")) {
     return "/startup/meeting-auth";
@@ -176,6 +183,8 @@ const activeMenu = computed(() => {
   if (path.startsWith("/audit")) return "/audit";
   if (path.startsWith("/knowledge/medical-consult")) return "/knowledge/medical-consult";
   if (path.startsWith("/knowledge/notes")) return "/knowledge/notes";
+  if (path.startsWith("/knowledge/support-files")) return "/knowledge/support-files";
+  if (path.startsWith("/knowledge/instruction-files")) return "/knowledge/instruction-files";
   if (path.startsWith("/projects/")) return "/admin/projects";
   if (path.startsWith("/admin/projects/")) return "/admin/projects";
   return path;