feat(channel-monitor): aggregate history to daily rollups + soft delete

明细只保留 1 天，超过 1 天聚合到新表 channel_monitor_daily_rollups（按
monitor_id/model/bucket_date 维度），聚合保留 30 天。两张表都用 SoftDeleteMixin
软删除（DELETE 自动改为 UPDATE deleted_at = NOW()）。

聚合 + 清理任务由 OpsCleanupService 的 cron 统一调度，与运维监控的清理共享
schedule（默认 0 2 * * *）和 leader lock。ChannelMonitorRunner 的 cleanupLoop
被移除，只保留 dueCheckLoop。

读取路径 ComputeAvailability* 改为 UNION 明细（今天 deleted_at IS NULL）+
聚合（过去 windowDays 天 deleted_at IS NULL），SUM(ok)/SUM(total) 自然加权
计算可用率，AVG latency 用 SUM(sum_latency_ms)/SUM(count_latency)。

watermark 表 channel_monitor_aggregation_watermark 单行（id=1），记录
last_aggregated_date，重启后从该日期 +1 继续聚合，首次为 nil 则从
today - 30d 开始回填，单次最多 35 天上限避免长事务。

raw SQL 的 ListLatestPerModel / ListLatestForMonitorIDs / ListRecentHistoryForMonitors
都补上 deleted_at IS NULL 过滤（SoftDeleteMixin interceptor 只对 ent query 生效）。

bump version to 0.1.114.28

GroupBadge 在 MonitorKeyPickerDialog 中复用平台主题色 + 倍率/专属倍率
（顺手优化）。

frontend/src/components/admin/monitor/MonitorFormDialog.vue

@@ -113,6 +113,7 @@
     :loading="myKeysLoading"
     :keys="myActiveKeys"
     :provider="form.provider"
+    :user-group-rates="userGroupRates"
     @close="showKeyPicker = false"
     @pick="pickMyKey"
   />
@@ -125,6 +126,7 @@ import { useAppStore } from '@/stores/app'
 import { extractApiErrorMessage } from '@/utils/apiError'
 import { adminAPI } from '@/api/admin'
 import { keysAPI } from '@/api/keys'
+import { userGroupsAPI } from '@/api/groups'
 import type {
   ChannelMonitor,
   CreateParams,
@@ -175,6 +177,7 @@ const submitting = ref(false)
 const showKeyPicker = ref(false)
 const myKeysLoading = ref(false)
 const myActiveKeys = ref<ApiKey[]>([])
+const userGroupRates = ref<Record<number, number>>({})
 
 interface MonitorForm {
   name: string
@@ -263,7 +266,10 @@ async function openMyKeyPicker() {
   if (myActiveKeys.value.length > 0) return
   myKeysLoading.value = true
   try {
-    const res = await keysAPI.list(1, 100, { status: 'active' })
+    const [res, rates] = await Promise.all([
+      keysAPI.list(1, 100, { status: 'active' }),
+      userGroupsAPI.getUserGroupRates(),
+    ])
     const items = res.items || []
     const now = Date.now()
     myActiveKeys.value = items.filter(k => {
@@ -271,6 +277,7 @@ async function openMyKeyPicker() {
       if (!k.expires_at) return true
       return new Date(k.expires_at).getTime() > now
     })
+    userGroupRates.value = rates
   } catch (err: unknown) {
     appStore.showError(extractApiErrorMessage(err, t('admin.channelMonitor.form.noActiveKey')))
   } finally {

frontend/src/components/admin/monitor/MonitorKeyPickerDialog.vue

@@ -47,9 +47,14 @@
               <td class="px-3 py-2 font-medium text-gray-900 dark:text-white">{{ k.name }}</td>
               <td class="px-3 py-2 font-mono text-xs text-gray-500 dark:text-gray-400">{{ maskApiKey(k.key) }}</td>
               <td class="px-3 py-2">
-                <span v-if="k.group" class="inline-flex items-center rounded-md bg-gray-100 px-2 py-0.5 text-xs text-gray-700 dark:bg-dark-700 dark:text-gray-300">
-                  {{ k.group.name }}
-                </span>
+                <GroupBadge
+                  v-if="k.group"
+                  :name="k.group.name"
+                  :platform="k.group.platform"
+                  :subscription-type="k.group.subscription_type"
+                  :rate-multiplier="k.group.rate_multiplier"
+                  :user-rate-multiplier="userGroupRates[k.group.id]"
+                />
                 <span v-else class="text-xs text-gray-400">—</span>
               </td>
             </tr>
@@ -73,14 +78,18 @@ import { useI18n } from 'vue-i18n'
 import type { ApiKey } from '@/types'
 import type { Provider } from '@/api/admin/channelMonitor'
 import BaseDialog from '@/components/common/BaseDialog.vue'
+import GroupBadge from '@/components/common/GroupBadge.vue'
 import { maskApiKey } from '@/utils/maskApiKey'
 
-const props = defineProps<{
+const props = withDefaults(defineProps<{
   show: boolean
   loading: boolean
   keys: ApiKey[]
   provider: Provider
-}>()
+  userGroupRates?: Record<number, number>
+}>(), {
+  userGroupRates: () => ({}),
+})
 
 defineEmits<{
   (e: 'close'): void