feat: C 端套餐沉默期展示与自助延期

- 套餐历史展示沉默期状态、截止日期、累计延期与调整审批中，可延期时显示延期入口
- 新增延期页：资格、档位与自定义天数试算、支付方式、下单（request_id 幂等）
- 支付宝走现有支付页；微信为链接时在微信外直接跳转，否则展示二维码与复制链接
- 新增我的延期订单列表与详情、沉默期记录，沉默期错误码转客户提示

components/PackageHistoryNode.vue

@@ -30,6 +30,43 @@
 			</view>
 		</view>
 
+		<view v-if="silence" class="silence-info">
+			<view class="silence-header flex-row-sb">
+				<view class="silence-title">实名沉默期</view>
+				<view class="silence-status" :class="getSilenceStatusClass(silence.silence_status)">
+					{{ silence.silence_status_name || '-' }}
+				</view>
+			</view>
+			<view class="info-row flex-row-sb">
+				<view class="info-label">截止时间</view>
+				<view class="info-value">{{ formatSilenceDate(silence.silence_deadline_at) }}</view>
+			</view>
+			<view v-if="silence.silence_period_days" class="info-row flex-row-sb">
+				<view class="info-label">沉默期天数</view>
+				<view class="info-value">{{ silence.silence_period_days }} 天</view>
+			</view>
+			<view v-if="silence.silence_extended_days > 0" class="info-row flex-row-sb">
+				<view class="info-label">累计延期</view>
+				<view class="info-value">{{ silence.silence_extended_days }} 天</view>
+			</view>
+			<view v-if="silence.silence_adjust_pending" class="silence-pending">调整审批中</view>
+			<view class="silence-actions">
+				<view
+					class="silence-link"
+					role="button"
+					tabindex="0"
+					@tap.stop="openSilenceRecords"
+				>沉默期记录</view>
+				<view
+					v-if="silence.extendable"
+					class="silence-extend"
+					role="button"
+					tabindex="0"
+					@tap.stop="openSilenceExtension"
+				>延期</view>
+			</view>
+		</view>
+
 		<view class="divider"></view>
 
 		<view class="flow-info">
@@ -80,6 +117,7 @@
 
 <script setup>
 	import { computed, ref } from 'vue';
+	import { formatSilenceDate, getSilenceStatusClass } from '@/utils/silence.js';
 
 	const props = defineProps({
 		node: {
@@ -92,6 +130,19 @@
 		}
 	});
 
+	const silence = computed(() => props.node.silence || null);
+	const openSilenceExtension = () => {
+		if (!silence.value?.extendable || !props.node.package_usage_id) return;
+		uni.navigateTo({
+			url: `/pages/silence-extension/silence-extension?package_usage_id=${props.node.package_usage_id}`
+		});
+	};
+	const openSilenceRecords = () => {
+		if (!props.node.package_usage_id) return;
+		uni.navigateTo({
+			url: `/pages/silence-records/silence-records?package_usage_id=${props.node.package_usage_id}`
+		});
+	};
 	const children = computed(() => Array.isArray(props.node.children) ? props.node.children : []);
 	const hasChildren = computed(() => children.value.length > 0);
 	const isMasterMissing = computed(() => props.node.relationship_status === 'master_missing');
@@ -147,6 +198,73 @@
 </script>
 
 <style lang="scss" scoped>
+	.silence-info {
+		margin-top: var(--space-md);
+		padding: var(--space-md);
+		border-radius: 16rpx;
+		background: var(--bg-secondary);
+	}
+
+	.silence-header {
+		align-items: center;
+		margin-bottom: var(--space-sm);
+	}
+
+	.silence-title {
+		font-size: 28rpx;
+		font-weight: 600;
+		color: var(--text-primary);
+	}
+
+	.silence-status {
+		padding: 4rpx 16rpx;
+		border-radius: 999rpx;
+		font-size: 22rpx;
+		color: var(--text-secondary);
+		background: var(--bg-primary);
+
+		&.silence-waiting {
+			color: #0a84ff;
+			background: rgba(10, 132, 255, 0.12);
+		}
+
+		&.silence-expired {
+			color: var(--danger);
+			background: var(--danger-light);
+		}
+
+		&.silence-ended {
+			color: var(--text-tertiary);
+		}
+	}
+
+	.silence-pending {
+		margin-top: var(--space-sm);
+		font-size: 24rpx;
+		color: #ff9f0a;
+	}
+
+	.silence-actions {
+		display: flex;
+		justify-content: flex-end;
+		gap: 24rpx;
+		margin-top: var(--space-sm);
+	}
+
+	.silence-link {
+		padding: 10rpx 0;
+		font-size: 24rpx;
+		color: var(--primary-dark);
+	}
+
+	.silence-extend {
+		padding: 10rpx 32rpx;
+		border-radius: 999rpx;
+		font-size: 24rpx;
+		color: #fff;
+		background: var(--primary);
+	}
+
 	.package-node {
 		margin-bottom: var(--space-md);