fix: 修复分享链接路由与登录回跳

- 统一生成包含部署基路径和 Hash 路由的知识库、工作流分享地址

- 未登录访问分享页时保留目标地址，并在登录成功后自动回跳

- 限定分享密钥作用域并补充失效、加载失败及回归测试

easyflow-ui-admin/app/src/views/ai/workflow/WorkflowDesign.vue

@@ -14,7 +14,7 @@ import {getOptions, sortNodes} from '@easyflow/utils';
 import {Tinyflow} from '@tinyflow-ai/vue';
 
 import {ArrowLeft, CircleCheck, Close, Promotion,} from '@element-plus/icons-vue';
-import {ElButton, ElDrawer, ElMessage, ElSkeleton,} from 'element-plus';
+import {ElButton, ElDrawer, ElMessage, ElResult, ElSkeleton,} from 'element-plus';
 
 import {api} from '#/api/request';
 import CommonSelectDataModal from '#/components/commonSelectModal/CommonSelectDataModal.vue';
@@ -54,18 +54,7 @@ const { isDark } = usePreferences();
 // vue
 onMounted(async () => {
   document.addEventListener('keydown', handleKeydown);
-  await resolveSharedWorkflowId();
-  if (!workflowId.value) {
-    return;
-  }
-  await Promise.all([
-    loadCustomNode(),
-    getLlmList(),
-    getKnowledgeList(),
-    getCodeEngineList(),
-    getWorkflowInfo(workflowId.value),
-  ]);
-  showTinyFlow.value = true;
+  await initializeWorkflow();
 });
 onBeforeUnmount(() => {
   captureCurrentWorkflowDraft();
@@ -83,6 +72,7 @@ onDeactivated(() => {
 const tinyflowRef = ref<InstanceType<typeof Tinyflow> | null>(null);
 const workflowId = ref(route.query.id);
 const workflowInfo = ref<any>({});
+const initializationError = ref(false);
 const runParams = ref<any>(null);
 const tinyFlowData = ref<any>(null);
 const llmList = ref<any>([]);
@@ -109,6 +99,32 @@ async function resolveSharedWorkflowId() {
     },
   });
 }
+
+async function initializeWorkflow() {
+  initializationError.value = false;
+  showTinyFlow.value = false;
+  try {
+    await resolveSharedWorkflowId();
+    if (!workflowId.value) {
+      return;
+    }
+    await Promise.all([
+      loadCustomNode(),
+      getLlmList(),
+      getKnowledgeList(),
+      getCodeEngineList(),
+      getWorkflowInfo(workflowId.value),
+    ]);
+    showTinyFlow.value = true;
+  } catch (error) {
+    console.error('Workflow initialization failed:', error);
+    initializationError.value = true;
+  }
+}
+
+function backToWorkflowList() {
+  router.replace({ path: '/ai/workflow' });
+}
 const WORKFLOW_DRAFT_WRITE_DELAY = 320;
 let draftWriteTimer: ReturnType<typeof setTimeout> | undefined;
 let pendingDraftContent: any = null;
@@ -870,9 +886,24 @@ function onAsyncExecute(info: any) {
         </ElButton>
       </div>
     </div>
+    <ElResult
+      v-if="initializationError"
+      icon="error"
+      :title="$t('aiWorkflow.loadFailed')"
+      class="load-div"
+    >
+      <template #extra>
+        <ElButton @click="backToWorkflowList">
+          {{ $t('button.back') }}
+        </ElButton>
+        <ElButton type="primary" @click="initializeWorkflow">
+          {{ $t('aiWorkflow.reload') }}
+        </ElButton>
+      </template>
+    </ElResult>
     <Tinyflow
       ref="tinyflowRef"
-      v-if="showTinyFlow"
+      v-else-if="showTinyFlow"
       class="tiny-flow-container"
       :data="JSON.parse(JSON.stringify(tinyFlowData))"
       :theme="isDark ? 'dark' : 'light'"
@@ -941,7 +972,12 @@ function onAsyncExecute(info: any) {
         </div>
       </div>
     </transition>
-    <ElSkeleton v-if="!showTinyFlow" class="load-div" :rows="5" animated />
+    <ElSkeleton
+      v-if="!showTinyFlow && !initializationError"
+      class="load-div"
+      :rows="5"
+      animated
+    />
   </div>
 </template>