feat: implement priority_weighted_plus_percent pricing algorithm

frontend/src/views/Websites.vue

@@ -287,6 +287,7 @@
             <el-form-item label="算法">
               <div class="custom-select-wrapper">
                 <el-select v-model="bindingForm.algorithm" style="width:100%" class="custom-theme-select">
+                  <el-option label="优先级期望成本 + 百分比" value="priority_weighted_plus_percent" />
                   <el-option label="最高倍率 + 百分比" value="max_plus_percent" />
                   <el-option label="平均倍率 + 百分比" value="average_plus_percent" />
                   <el-option label="最低倍率 + 百分比" value="min_plus_percent" />
@@ -1091,7 +1092,7 @@ const syncingImportStatus = ref(false)
 const reorderingPriorities = ref(false)
 
 const statusLabel = (s: string) => ({ healthy: '健康', unhealthy: '异常', unknown: '未知' }[s] || s)
-const algorithmLabel = (s: string) => ({ max_plus_percent: '最高倍率', average_plus_percent: '平均倍率', min_plus_percent: '最低倍率' }[s] || s)
+const algorithmLabel = (s: string) => ({ max_plus_percent: '最高倍率', average_plus_percent: '平均倍率', min_plus_percent: '最低倍率', priority_weighted_plus_percent: '优先级期望成本' }[s] || s)
 const toUTC = (t: string) => /[Z+\-]\d*$/.test(t.trim()) ? t : t + 'Z'
 const fmtTime = (t: string) => dayjs(toUTC(t)).format('MM-DD HH:mm:ss')
 const sourceGroupId = (group: any) => String(group?.group_id || group?.id || group?.name || '')
@@ -1130,7 +1131,7 @@ function defaultBindingForm(): GroupBindingForm {
     target_group_name: '',
     source_groups: [],
     percent: 0,
-    algorithm: 'max_plus_percent',
+    algorithm: 'priority_weighted_plus_percent',
     enabled: true,
   }
 }