fix: fetchUser on mount, password validation, remove dead code

- Call authStore.fetchUser() in onMounted so avatar shows username after refresh
- Simplify navigator.onLine checks (remove redundant !== false)
- Remove unused navItems array (dead code from earlier iteration)
- Add password form validation with confirm password field and rules

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/frontend/src/views/Layout.vue

@@ -124,13 +124,16 @@
 
   <!-- Change password dialog -->
   <el-dialog v-model="showPwd" title="修改密码" width="420px" :close-on-click-modal="false">
-    <el-form :model="pwdForm" label-width="70px">
-      <el-form-item label="旧密码">
+    <el-form ref="pwdFormRef" :model="pwdForm" :rules="pwdRules" label-width="70px">
+      <el-form-item label="旧密码" prop="old_password">
         <el-input v-model="pwdForm.old_password" type="password" show-password />
       </el-form-item>
-      <el-form-item label="新密码">
+      <el-form-item label="新密码" prop="new_password">
         <el-input v-model="pwdForm.new_password" type="password" show-password />
       </el-form-item>
+      <el-form-item label="确认密码" prop="confirm_password">
+        <el-input v-model="pwdForm.confirm_password" type="password" show-password />
+      </el-form-item>
     </el-form>
     <template #footer>
       <el-button @click="showPwd = false">取消</el-button>
@@ -142,7 +145,7 @@
 <script setup lang="ts">
 import { ref, computed, reactive, onMounted, onUnmounted } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
-import { ElMessage } from 'element-plus'
+import { ElMessage, type FormInstance, type FormRules } from 'element-plus'
 import {
   HomeFilled, Memo, Connection, Setting, Cloudy, Timer, Notebook, FolderOpened,
   ArrowDown, Lock, SwitchButton, DArrowLeft, DArrowRight
@@ -156,32 +159,44 @@ const authStore = useAuthStore()
 
 const isCollapse = ref(false)
 const showPwd = ref(false)
-const pwdForm = reactive({ old_password: '', new_password: '' })
-const isOnline = ref(navigator.onLine !== false)
+const pwdForm = reactive({ old_password: '', new_password: '', confirm_password: '' })
+const pwdFormRef = ref<FormInstance>()
+const pwdRules: FormRules = {
+  old_password: [{ required: true, message: '请输入旧密码', trigger: 'blur' }],
+  new_password: [
+    { required: true, message: '请输入新密码', trigger: 'blur' },
+    { min: 6, message: '密码至少6位', trigger: 'blur' }
+  ],
+  confirm_password: [
+    { required: true, message: '请确认新密码', trigger: 'blur' },
+    {
+      validator: (_rule: any, value: string, callback: any) => {
+        if (value !== pwdForm.new_password) {
+          callback(new Error('两次输入的密码不一致'))
+        } else {
+          callback()
+        }
+      },
+      trigger: 'blur'
+    }
+  ]
+}
+const isOnline = ref(navigator.onLine)
 
 // Track online/offline status
 function updateOnlineStatus() {
-  isOnline.value = navigator.onLine !== false
+  isOnline.value = navigator.onLine
 }
-onMounted(() => {
+onMounted(async () => {
   window.addEventListener('online', updateOnlineStatus)
   window.addEventListener('offline', updateOnlineStatus)
+  await authStore.fetchUser()
 })
 onUnmounted(() => {
   window.removeEventListener('online', updateOnlineStatus)
   window.removeEventListener('offline', updateOnlineStatus)
 })
 
-const navItems: { path: string; label: string; icon: any; badge?: string }[] = [
-  { path: '/', label: '处理中心', icon: HomeFilled },
-  { path: '/tasks', label: '任务历史', icon: Timer },
-  { path: '/logs', label: '日志中心', icon: Notebook },
-  { path: '/memory', label: '记忆库', icon: Memo },
-  { path: '/barcodes', label: '条码映射', icon: Connection },
-  { path: '/config', label: '系统配置', icon: Setting },
-  { path: '/sync', label: '云端同步', icon: Cloudy },
-]
-
 const filesMenuOpen = ['/files']
 
 const pageTitles: Record<string, string> = {
@@ -208,19 +223,26 @@ function handleCommand(cmd: string) {
   } else if (cmd === 'password') {
     pwdForm.old_password = ''
     pwdForm.new_password = ''
+    pwdForm.confirm_password = ''
     showPwd.value = true
   }
 }
 
 async function changePassword() {
-  if (!pwdForm.new_password) { ElMessage.warning('请输入新密码'); return }
-  try {
-    await api.post('/auth/change-password', pwdForm)
-    ElMessage.success('密码修改成功')
-    showPwd.value = false
-  } catch (err: any) {
-    ElMessage.error(err.response?.data?.detail || '修改失败')
-  }
+  if (!pwdFormRef.value) return
+  await pwdFormRef.value.validate(async (valid) => {
+    if (!valid) return
+    try {
+      await api.post('/auth/change-password', {
+        old_password: pwdForm.old_password,
+        new_password: pwdForm.new_password
+      })
+      ElMessage.success('密码修改成功')
+      showPwd.value = false
+    } catch (err: any) {
+      ElMessage.error(err.response?.data?.detail || '修改失败')
+    }
+  })
 }
 </script>