chore(ui): 更新应用名称为AI-RAG并添加品牌标识

- 将API接口参数文档中的应用名称从MaxKB更新为AI-RAG
- 在登录页面添加中国移动图标和AI-RAG品牌标识
- 为中国移动图标添加渐变文字样式
- 更新系统头部组件中的应用标题为AI-RAG
- 修改标题文字样式为渐变色彩效果

API接口参数文档.md

@@ -1,4 +1,4 @@
-# MaxKB API接口参数文档
+# AI-RAG API接口参数文档
 
 ## 1. 概述
 

ui/src/layout/layout-header/SystemHeader.vue

@@ -3,7 +3,7 @@
     <div class="flex-between w-full align-center" style="padding: 0 16px;">
       <div style="display: flex; align-items: center;">
         <ChinaMobileIcon />
-        <h1 style="font-size: 18px; font-weight: 600; margin: 0;">{{ isSystemManagement ? 'AI-RAG | 系统管理' : 'AI-RAG' }}</h1>
+        <h1 style="font-size: 18px; font-weight: 600; margin: 0; background: linear-gradient(90deg, #6B47E5, #1E71C7); -webkit-background-clip: text; -webkit-text-fill-color: transparent;">{{ isSystemManagement ? 'AI-RAG | 系统管理' : 'AI-RAG' }}</h1>
       </div>
       <div style="display: flex; align-items: center;">
         <router-link v-if="isSystemManagement" to="/application" style="display: flex; align-items: center; padding: 6px 12px; border-radius: 6px; text-decoration: none; color: #1890ff; border: 1px solid #1890ff;">

ui/src/views/login/index.vue

@@ -1,6 +1,12 @@
 <template>
   <login-layout v-if="!loading" v-loading="loading">
     <LoginContainer :subTitle="newDefaultSlogan">
+      <template #logo>
+        <div style="display: flex; align-items: center; justify-content: center;">
+          <ChinaMobileIcon />
+          <h1 style="font-size: 18px; font-weight: 600; margin: 0; background: linear-gradient(90deg, #6B47E5, #1E71C7); -webkit-background-clip: text; -webkit-text-fill-color: transparent;">AI-RAG</h1>
+        </div>
+      </template>
       <h2 class="mb-24" v-if="!showQrCodeTab">{{ loginMode || $t('views.login.title') }}</h2>
       <div v-if="!showQrCodeTab">
         <el-form
@@ -142,6 +148,7 @@ import {MsgConfirm, MsgError} from '@/utils/message.ts'
 import * as dd from 'dingtalk-jsapi'
 import {loadScript} from '@/utils/common'
 import forge from 'node-forge';
+import ChinaMobileIcon from '@/components/china-mobile-icon/index.vue';
 
 const router = useRouter()
 const {login, user, theme} = useStore()