feat(finance): 接单模板发单金额落规则级成本版本

此前接单平台成本版本只有 sys_work_order_reward 的全局 0 元占位，662 个模板的发单金额从未进入 cost_versions。\n\n现在为 662 个模板各生成一条规则级版本：634 条固定发单金额 + 28 条按件单价；全局 0 元版本仅作“按工单实际结算”占位。成本版本页新增“用户实付均价”和“平均实发/项”，支持按模板名称/规则键搜索，按商品筛选也能命中规则版本。\n\n历史工单快照关联到对应模板版本；模板保存时自动同步单条成本版本；删除模板会先把历史版本脱钩停用，保留快照可追溯。\n\n新增迁移 112 覆盖索引，用户实付聚合从约 1.1s 降到约 150ms。

apps/backend/src/routes/admin/cost-center.ts

@@ -28,6 +28,7 @@ import {
   resolveAdminCostException,
   retireAdminCostVersion,
   syncAdminAffiliateDashProducts,
+  syncAdminWorkOrderTemplateCostVersions,
   updateAdminChannelMapping,
   updateAdminCostItem,
   updateAdminProduct,
@@ -150,6 +151,22 @@ router.post(
   }),
 )
 
+router.post(
+  '/cost-center/work-order-template-costs/sync',
+  requireAdminPermission('finance.config'),
+  createJsonHandler(() => syncAdminWorkOrderTemplateCostVersions(), {
+    successMessage: '接单模板发单金额已同步',
+    errorMessage: '同步接单模板发单金额失败',
+    scope: '[admin/cost-center/work-order-template-costs/sync]',
+    audit: (_req, data) => ({
+      action: 'cost_work_order_template_costs_synced',
+      targetType: 'cost_versions',
+      targetId: '',
+      data: data as Record<string, unknown>,
+    }),
+  }),
+)
+
 router.get(
   '/cost-center/products',
   requireAdminPermission('finance.view'),

apps/backend/src/routes/admin/worker-platform/config.ts

@@ -1,5 +1,6 @@
 import { Router } from 'express'
 import { setHttpCache } from '../../../middleware/http-cache.js'
+import { syncAdminWorkOrderTemplateCostVersions } from '../../../services/admin/admin-cost-center-service.js'
 
 import {
   deleteAdminWorkCategory,
@@ -147,17 +148,25 @@ router.get(
 router.post(
   '/worker-platform/product-rules',
   requireAdminRoles(['admin', 'operator']),
-  createJsonHandler((req) => saveAdminWorkProductRule(req.body || {}), {
-    successMessage: '接单物品规则已保存',
-    errorMessage: '保存接单物品规则失败',
-    scope: '[admin/worker-platform/product-rules]',
-    audit: (_req, data) => ({
-      action: 'work_product_rule_saved',
-      targetType: 'work_product_rule',
-      targetId: String((data as { rule?: { ruleKey?: string } })?.rule?.ruleKey || ''),
-      data: data && typeof data === 'object' ? (data as Record<string, unknown>) : {},
-    }),
-  }),
+  createJsonHandler(
+    async (req) => {
+      const result = await saveAdminWorkProductRule(req.body || {})
+      const ruleId = Number((result as { rule?: { id?: number } })?.rule?.id || 0)
+      const templateCost = ruleId ? await syncAdminWorkOrderTemplateCostVersions(ruleId) : null
+      return { ...result, templateCost }
+    },
+    {
+      successMessage: '接单物品规则已保存',
+      errorMessage: '保存接单物品规则失败',
+      scope: '[admin/worker-platform/product-rules]',
+      audit: (_req, data) => ({
+        action: 'work_product_rule_saved',
+        targetType: 'work_product_rule',
+        targetId: String((data as { rule?: { ruleKey?: string } })?.rule?.ruleKey || ''),
+        data: data && typeof data === 'object' ? (data as Record<string, unknown>) : {},
+      }),
+    },
+  ),
 )
 
 router.post(