fix: 修复4个已知BUG — P1 ChatList/P2 错误密码/P3 Copilot崩溃/P3超管entrypoint

P1: ChatList.vue — 添加 conversationStats watch fallback，检测 stats>0
   但 chatList 为空时自动触发 fetchConversations
P2: api.js parseAPIErrorResponse — 处理 error 字段为对象时提取 .message
P3: CopilotContainer.vue — activeAssistant 判空保护
P3: 新建 super_admin.html + vite.config.ts rewrite 规则
    (注：entrypoint 仅含样式，Vue应用代码待补)
防御: NotificationTable.vue — 可选链保护 primary_actor.meta 路径

frontend/app/javascript/dashboard/components/ChatList.vue

@@ -797,6 +797,19 @@ onMounted(() => {
   }
 });
 
+// Fallback: if fetchAllConversations wasn't triggered during onMounted
+// (e.g., race condition with route transition), retry after store settles.
+// Uses a one-shot watch on conversationStats to detect empty state.
+const _fallbackWatch = watch(conversationStats, (stats) => {
+  if (!stats) return;
+  const totalCount = (stats.mineCount || 0) + (stats.unAssignedCount || 0) + (stats.allCount || 0);
+  // If stats show conversations exist but chatList is empty, re-fetch
+  if (totalCount > 0 && chatLists.value.length === 0 && !chatListLoading.value) {
+    _fallbackWatch(); // unwatch immediately — one-shot
+    fetchConversations();
+  }
+}, { immediate: false });
+
 const deleteConversationDialogRef = ref(null);
 const selectedConversationId = ref(null);
 

frontend/app/javascript/dashboard/components/copilot/CopilotContainer.vue

@@ -66,7 +66,10 @@ const activeAssistant = computed(() => {
     if (inboxMatchedAssistant) return inboxMatchedAssistant;
   }
   // If neither of the above is available, the first assistant in the account takes preference.
-  return assistants.value[0];
+  if (assistants.value && assistants.value.length > 0) {
+    return assistants.value[0];
+  }
+  return null;
 });
 
 const closeCopilotPanel = () => {

frontend/app/javascript/dashboard/routes/dashboard/notifications/components/NotificationTable.vue

@@ -108,10 +108,10 @@ export default {
           </td>
           <td class="thumbnail--column">
             <Avatar
-              v-if="notificationItem.primary_actor.meta.assignee"
-              :src="notificationItem.primary_actor.meta.assignee.thumbnail"
+              v-if="notificationItem.primary_actor?.meta?.assignee"
+              :src="notificationItem.primary_actor?.meta?.assignee?.thumbnail || ''"
               :size="28"
-              :name="notificationItem.primary_actor.meta.assignee.name"
+              :name="notificationItem.primary_actor?.meta?.assignee?.name || ''"
               rounded-full
             />
           </td>

frontend/app/javascript/dashboard/store/utils/api.js

@@ -92,12 +92,27 @@ export const parseAPIErrorResponse = error => {
     return error?.response?.data?.message;
   }
   if (error?.response?.data?.error) {
-    return error?.response?.data?.error;
+    // error could be a string or an object with a message property
+    if (typeof error.response.data.error === 'string') {
+      return error.response.data.error;
+    }
+    if (error.response.data.error?.message) {
+      return error.response.data.error.message;
+    }
+    return JSON.stringify(error.response.data.error);
   }
   if (error?.response?.data?.errors) {
-    return error?.response?.data?.errors[0];
+    const first = error.response.data.errors;
+    if (Array.isArray(first)) {
+      return first[0];
+    }
+    return first;
   }
-  return error;
+  // Fallback: return a useful default message rather than the raw error object
+  if (error?.message && typeof error.message === 'string') {
+    return error.message;
+  }
+  return 'Request failed. Please try again.';
 };
 
 export const throwErrorMessage = error => {