diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 4ff42d5..27441dc 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -45,7 +45,6 @@
           <input v-model="loginForm.password" type="password" placeholder="请输入密码" @keyup.enter="login">
         </div>
         <button class="login-btn" @click="login">登录</button>
-        <div class="login-hint">默认账号: admin / admin123</div>
       </div>
     </div>
   </div>
@@ -153,5 +152,4 @@ body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; b
 .form-group input:focus { outline: none; border-color: #1890ff; }
 .login-btn { width: 100%; padding: 12px; background: #1890ff; color: white; border: none; border-radius: 6px; font-size: 16px; cursor: pointer; margin-top: 8px; }
 .login-btn:hover { background: #40a9ff; }
-.login-hint { text-align: center; margin-top: 16px; font-size: 12px; color: #999; }
 </style>
diff --git a/frontend/src/__tests__/App.test.js b/frontend/src/__tests__/App.test.js
index 474968a..f206fc8 100644
--- a/frontend/src/__tests__/App.test.js
+++ b/frontend/src/__tests__/App.test.js
@@ -65,6 +65,17 @@ describe('App.vue', () => {
     expect(wrapper.find('.login-modal').exists()).toBe(true)
   })
 
+  it('登录框不展示默认管理员账号密码', async () => {
+    const router = createMockRouter()
+    const wrapper = mount(App, {
+      global: { plugins: [router] },
+    })
+    await wrapper.find('.btn-login').trigger('click')
+
+    expect(wrapper.find('.login-modal').text()).not.toContain('默认账号')
+    expect(wrapper.find('.login-modal').text()).not.toContain('admin123')
+  })
+
   it('登录成功后更新状态', async () => {
     fetch.mockResolvedValueOnce({
       ok: true,
diff --git a/frontend/src/__tests__/HistoryView.test.js b/frontend/src/__tests__/HistoryView.test.js
index c14064c..3e9b509 100644
--- a/frontend/src/__tests__/HistoryView.test.js
+++ b/frontend/src/__tests__/HistoryView.test.js
@@ -8,7 +8,7 @@ window.open = vi.fn()
 
 const mockTasks = [
   { id: '1', app_name: 'App1', build_type: 'Ad_Hoc', scheme_name: 'sch1', status: 'completed', created_at: '2024-01-01T10:00:00', dsym_path: '/path/dsym', oss_url: 'https://oss.com/app1.ipa', qr_code_path: '/path/qr.png' },
-  { id: '2', app_name: 'App2', build_type: 'App_Store', scheme_name: 'sch2', status: 'failed', created_at: '2024-01-02T10:00:00', error_message: '构建失败' },
+  { id: '2', app_name: 'App2', build_type: 'App_Store', scheme_name: 'sch2', status: 'failed', created_at: '2024-01-02T10:00:00', error_message: '构建失败', error_category: 'compilation' },
   { id: '3', app_name: 'App3', build_type: 'Ad_Hoc', scheme_name: 'sch1', status: 'pending', created_at: '2024-01-03T10:00:00' },
 ]
 
@@ -47,7 +47,7 @@ describe('HistoryView.vue', () => {
     await flushPromises()
 
     const rows = wrapper.findAll('tbody tr')
-    expect(rows.length).toBe(2) // App2(failed) 默认隐藏
+    expect(rows.length).toBe(3)
   })
 
   it('显示任务信息', async () => {
@@ -58,23 +58,23 @@ describe('HistoryView.vue', () => {
     await flushPromises()
 
     expect(wrapper.text()).toContain('App1')
-    // App2 是 failed 状态，默认隐藏
-    expect(wrapper.text()).not.toContain('App2')
+    expect(wrapper.text()).toContain('App2')
     expect(wrapper.text()).toContain('Ad_Hoc')
   })
 
-  it('默认隐藏失败和已取消的任务', async () => {
+  it('默认显示失败任务及完整失败原因', async () => {
     const router = createMockRouter()
     const wrapper = mount(HistoryView, {
       global: { plugins: [router] },
     })
     await flushPromises()
 
-    // 只显示 App1（completed）和 App3（pending），App2（failed）被隐藏
     const rows = wrapper.findAll('tbody tr')
-    expect(rows.length).toBe(2)
+    expect(rows.length).toBe(3)
     expect(wrapper.text()).toContain('App1')
     expect(wrapper.text()).toContain('App3')
+    expect(wrapper.text()).toContain('失败')
+    expect(wrapper.text()).toContain('编译错误')
     expect(wrapper.text()).toContain('等待中')
   })
 
diff --git a/frontend/src/views/ConfigView.vue b/frontend/src/views/ConfigView.vue
index baaa2e7..bf41191 100644
--- a/frontend/src/views/ConfigView.vue
+++ b/frontend/src/views/ConfigView.vue
@@ -325,7 +325,7 @@
         </div>
         <div class="form-group">
           <label>密码 *</label>
-          <input v-model="userForm.password" type="password" placeholder="至少 6 位">
+          <input v-model="userForm.password" type="password" placeholder="至少 12 位">
         </div>
         <div class="form-group">
           <label class="checkbox-label">
@@ -349,7 +349,7 @@
         </div>
         <div class="form-group">
           <label>新密码</label>
-          <input v-model="newPassword" type="password" placeholder="至少 6 位">
+          <input v-model="newPassword" type="password" placeholder="至少 12 位">
         </div>
         <div style="margin-top: 20px; display: flex; gap: 12px; justify-content: flex-end;">
           <button class="action-btn" style="padding: 8px 16px;" @click="showPasswordModal = false">取消</button>
@@ -650,6 +650,10 @@ const createUser = async () => {
     alert('请填写用户名和密码')
     return
   }
+  if (userForm.value.password.length < 12) {
+    alert('密码至少 12 位')
+    return
+  }
   try {
     const res = await authFetch('/api/users', {
       method: 'POST',
@@ -674,8 +678,8 @@ const openPasswordModal = (u) => {
 }
 
 const changePassword = async () => {
-  if (!newPassword.value || newPassword.value.length < 6) {
-    alert('密码至少 6 位')
+  if (!newPassword.value || newPassword.value.length < 12) {
+    alert('密码至少 12 位')
     return
   }
   try {
diff --git a/frontend/src/views/HistoryView.vue b/frontend/src/views/HistoryView.vue
index ae119eb..1b7d2bc 100644
--- a/frontend/src/views/HistoryView.vue
+++ b/frontend/src/views/HistoryView.vue
@@ -46,7 +46,7 @@
               </span>
             </td>
             <td>{{ task.scheme_name }}</td>
-            <td>
+            <td class="status-cell">
               <span :class="['task-status', `status-${task.status}`]">{{ statusText(task.status) }}</span>
               <span v-if="task.status === 'failed' && task.error_category" class="error-cat-badge">
                 {{ errorCategoryLabel(task.error_category) }}
@@ -365,9 +365,9 @@ const errorCategoryLabel = (cat) => {
 .config-table th:nth-child(2) { width: 14%; }
 .config-table th:nth-child(3) { width: 8%; }
 .config-table th:nth-child(4) { width: 10%; }
-.config-table th:nth-child(5) { width: 10%; }
+.config-table th:nth-child(5) { width: 12%; }
 .config-table th:nth-child(6) { width: 16%; }
-.config-table th:nth-child(7) { width: 28%; }
+.config-table th:nth-child(7) { width: 26%; }
 .config-table tr:hover { background: #fafafa; }
 
 .build-type-badge { padding: 2px 8px; border-radius: 4px; font-size: 12px; font-weight: 500; }
@@ -381,6 +381,8 @@ const errorCategoryLabel = (cat) => {
 .action-btn:hover { border-color: #1890ff; color: #1890ff; }
 
 .task-status { padding: 4px 12px; border-radius: 12px; font-size: 12px; font-weight: 500; }
+.status-cell { white-space: normal !important; overflow: visible !important; text-overflow: clip !important; }
+.status-cell .task-status, .status-cell .error-cat-badge { display: inline-block; margin-bottom: 4px; }
 .status-pending { background: #f0f0f0; color: #666; }
 .status-running { background: #e6f7ff; color: #1890ff; }
 .status-completed { background: #f6ffed; color: #52c41a; }