feat: 优化首页服务入口与租住业务流程

补齐首页待办跳转、押金支付引导和多类租住服务页面能力，统一租客端关键业务流程体验。

pkgService/contract_sign/contract_sign.vue

@@ -8,7 +8,7 @@
       <view class="overview-panel">
         <view class="overview-header">
           <view>
-            <view class="overview-title">{{ $tr('签约前确认') }}</view>
+            <view class="overview-title">{{ contractDisplayName || $tr('签约前确认') }}</view>
             <view class="overview-subtitle">{{ $tr('合同编号：') }}{{ contractNo || $tr('未获取') }}</view>
           </view>
           <view class="overview-badge">
@@ -106,6 +106,7 @@ import { contractPreview, contractSign, uploadCommonFile } from '@/api/index.js'
 import { syncLoginStayState } from '../../utils/session-sync'
 import ContractSignDialog from '../../components/ContractSignDialog.vue'
 import { normalizeRichTextImages } from '../../utils/rich-text'
+import { fetchContractDisplayInfo } from '../../utils/contract-display'
 
 function normalizeContractContent(content = '') {
   return normalizeRichTextImages(
@@ -144,6 +145,7 @@ export default {
   data() {
     return {
       contractNo: '',
+      contractDisplayName: '',
       orderNo: '',
       contractContent: '',
       loading: false,
@@ -158,9 +160,24 @@ export default {
     this.contractNo = decodeURIComponent(options.no || '')
     this.orderNo = decodeURIComponent(options.orderNo || '')
     this.signerName = this.getSignerName()
+    this.fetchContractDisplayName()
     this.fetchContractContent()
   },
   methods: {
+    fetchContractDisplayName() {
+      if (!this.contractNo) {
+        return Promise.resolve()
+      }
+
+      return fetchContractDisplayInfo(this.contractNo, this.$getLanguage())
+        .then(({ contractDisplayName }) => {
+          this.contractDisplayName = contractDisplayName || ''
+        })
+        .catch((error) => {
+          console.error('fetch contract display name failed', error)
+          this.contractDisplayName = ''
+        })
+    },
     fetchContractContent() {
       if (!this.contractNo) {
         return Promise.resolve()