fix: 修复登录失败被当成功、列表假分页与首页裁切等隐患

1. 登录/验证码改判业务码 data.code（外层 errcode 恒为0），失败不再写入 phone 造成假登录态，并透出后端真实原因；倒计时改为发送成功后才启动；token 按 accessToken 兜底读取，不再写入 undefined

2. 权益包三 Tab 由 pageSize=1000 的假分页改为真实分页 + 页面级触底加载，各 Tab 独立游标与请求序号，合并去重兜底；中奖名单页码改为按期维护，修复切期后重复追加

3. 首页去掉整页 overflow:hidden，小屏不再裁切活动指南卡片；接口表去重并清理 7 个废弃端点；基址/客服电话集中到 common/config.js；删除权益详情不可达的假成功分支

pages/winners/winners.vue

@@ -8,12 +8,12 @@
 				<text class="back-text">返回</text>
 			</view>
 			<view class="banner-header">
-				<image class="banner-icon" src="https://zhihuiyou.oss-cn-shenzhen.aliyuncs.com/hhrs/hhrs_zjgs.png" mode="aspectFit"></image>
+				<image class="banner-icon" src="https://aliyunoss.hn12301.net/hhrs/hhrs_zjgs.png" mode="aspectFit"></image>
 				<text class="banner-title">中奖名单公示</text>
 			</view>
 			<text class="banner-subtitle">总计 10,000份权益包，分三期公证抽取</text>
 			<view class="stats-card">
-				<image class="stats-gift" src="https://zhihuiyou.oss-cn-shenzhen.aliyuncs.com/hhrs/hhrs_xyckr.png" mode="aspectFit"></image>
+				<image class="stats-gift" src="https://aliyunoss.hn12301.net/hhrs/hhrs_xyckr.png" mode="aspectFit"></image>
 				<text class="stats-label">已产生</text>
 				<text class="stats-number">{{ totalWinners.toLocaleString() }}</text>
 				<text class="stats-label">名幸运持卡人</text>
@@ -78,7 +78,8 @@ export default {
 			currentTab: 0,
 			tabs: [],
 			winnerData: {},
-			pageNo: 1,
+			// xuchao: 页码改为按期维护（原单一 pageNo 在切期后会被沿用，导致同一页重复追加/跳页）
+			pageNos: {},
 			pageSize: 10,
 			totals: {},
 			totalWinners: 0,
@@ -123,11 +124,13 @@ export default {
 						data[index] = []
 					})
 					this.winnerData = data
-					// xuchao: 预置各期 key，保证 totals/loadStatusMap 的响应式
+					// xuchao: 预置各期 key，保证 totals/pageNos/loadStatusMap 的响应式
 					this.totals = {}
+					this.pageNos = {}
 					this.loadStatusMap = {}
 					dates.forEach((date, index) => {
 						this.$set(this.totals, index, 0)
+						this.$set(this.pageNos, index, 1)
 						this.$set(this.loadStatusMap, index, 'loading')
 					})
 					// xuchao: 预取各期第一页，汇总已产生总人数
@@ -142,21 +145,24 @@ export default {
 		loadWinnerList(tabIndex, pageNo, allowConcurrent) {
 			if (!this.tabs[tabIndex]) return
 			if (this.inFlight > 0 && !allowConcurrent) return
+			// xuchao: 本期页码独立计算，缺省续拉该期下一页
+			const page = pageNo || (this.pageNos[tabIndex] || 1)
 			this.inFlight++
 			this.$set(this.loadStatusMap, tabIndex, 'loading')
 			const drawDate = this.tabs[tabIndex].date
 			this.$u.api.getWinnerList({
-				pageNo: pageNo || this.pageNo,
+				pageNo: page,
 				pageSize: this.pageSize,
 				drawDate: drawDate
 			}).then(res => {
 				if (res.errcode === 0 && res.data) {
 					const list = res.data.list || []
-					const page = pageNo || this.pageNo
+					const prev = this.winnerData[tabIndex] || []
+					this.$set(this.pageNos, tabIndex, page)
 					if (page === 1) {
 						this.$set(this.winnerData, tabIndex, list)
 					} else {
-						this.winnerData[tabIndex] = this.winnerData[tabIndex].concat(list)
+						this.$set(this.winnerData, tabIndex, prev.concat(list))
 					}
 					this.$set(this.totals, tabIndex, res.data.total || 0)
 					// xuchao: 各期总人数求和，用于顶部幸运持卡人数
@@ -164,23 +170,25 @@ export default {
 				}
 			}).finally(() => {
 				this.inFlight--
-				const len = this.winnerData[tabIndex].length
+				const len = (this.winnerData[tabIndex] || []).length
 				const total = this.totals[tabIndex] || 0
 				this.$set(this.loadStatusMap, tabIndex, len === 0 || len >= total ? 'nomore' : 'loadmore')
 			})
 		},
 		loadMore() {
-			const total = this.totals[this.currentTab] || 0
-			if (this.winnerData[this.currentTab].length < total && this.inFlight === 0) {
-				this.pageNo++
-				this.loadWinnerList(this.currentTab)
+			const tab = this.currentTab
+			const total = this.totals[tab] || 0
+			const len = (this.winnerData[tab] || []).length
+			if (len < total && this.inFlight === 0) {
+				this.loadWinnerList(tab, (this.pageNos[tab] || 1) + 1)
 			}
 		},
 		switchTab(index) {
 			this.currentTab = index
-			this.pageNo = 1
-			if (this.winnerData[index].length === 0) {
-				this.loadWinnerList(index, 1)
+			// xuchao: 不再重置全局 pageNo（各期游标自带）；空列表补拉首页时允许并发，
+			//         避免首屏预取仍在途时切期被丢弃后一直显示“暂无数据”
+			if ((this.winnerData[index] || []).length === 0) {
+				this.loadWinnerList(index, 1, true)
 			} else {
 				const total = this.totals[index] || 0
 				this.$set(this.loadStatusMap, index, this.winnerData[index].length >= total ? 'nomore' : 'loadmore')