chore: 系统更名 华门窗→定兴门窗(全部用户可见名称)

frontend/src/views/LayoutView.vue

@@ -1,7 +1,7 @@
 <template>
   <el-container class="layout">
     <el-aside :width="collapsed ? '64px' : '200px'" class="aside">
-      <div class="logo">{{ collapsed ? '门' : '华门窗' }}</div>
+      <div class="logo">{{ collapsed ? '定' : '定兴门窗' }}</div>
       <el-scrollbar class="menu-scroll">
         <el-menu :default-active="route.path" router :collapse="collapsed" background-color="#2b3a4d"
                  text-color="#bfc9d4" active-text-color="#ffffff" :collapse-transition="false">
@@ -49,7 +49,7 @@
         <div class="header-left">
           <el-icon class="fold-btn" @click="collapsed = !collapsed"><Expand v-if="collapsed" /><Fold v-else /></el-icon>
           <el-breadcrumb separator="/">
-            <el-breadcrumb-item>华门窗</el-breadcrumb-item>
+            <el-breadcrumb-item>定兴门窗</el-breadcrumb-item>
             <el-breadcrumb-item>{{ route.meta.title }}</el-breadcrumb-item>
           </el-breadcrumb>
         </div>

frontend/src/views/LoginView.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="login-page">
     <el-card class="login-card">
-      <h2>华门窗云平台</h2>
+      <h2>定兴门窗云平台</h2>
       <p class="sub">画图 · 报价 · 订单 · 生产</p>
       <el-tabs v-model="tab" stretch>
         <el-tab-pane label="登录" name="login">

frontend/src/views/ShareView.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="share-page">
     <header class="share-head">
-      <span class="logo">华门窗</span>
+      <span class="logo">定兴门窗</span>
       <span class="title">{{ data?.title || '分享详情' }}</span>
     </header>
 
@@ -36,7 +36,7 @@
         </div>
       </div>
     </template>
-    <footer class="share-foot">本页面由华门窗云平台生成 · {{ data?.created_at?.slice(0, 10) }}</footer>
+    <footer class="share-foot">本页面由定兴门窗云平台生成 · {{ data?.created_at?.slice(0, 10) }}</footer>
   </div>
 </template>