收紧后端 TypeScript：统一 Json 类型与 TaskContext 契约

关闭 allowJs；集中 JsonObject 定义并替换分散 any 别名；parseTaskContext 返回 TaskContext；任务详情 API 标注 AdminTaskDetailView；测试减少 as any。

apps/backend/src/routes/admin/audit-logs.ts

@@ -1,9 +1,10 @@
 import { Router } from 'express'
+import type { JsonObject } from '../../types/json.js'
 
 import { getAdminAuditLogs } from '../../services/admin/admin-audit-service.js'
 import { createJsonHandler, requireAdminRoles } from './session.js'
 
-type AdminAuditLogRouteQuery = Record<string, any>
+type AdminAuditLogRouteQuery = JsonObject
 
 const router = Router()
 

apps/backend/src/routes/kuaishou-industry.ts

@@ -1,5 +1,6 @@
 import process from 'node:process'
 import { Router } from 'express'
+import type { JsonObject } from '../types/json.js'
 
 import { createRateLimitMiddleware } from '../middleware/rate-limit.js'
 import { handleSendCode } from '../services/platforms/kuaishou-industry/send-code-service.js'
@@ -152,10 +153,10 @@ router.post('/consume-code', industryRateLimit, async (req, res) => {
   }
 })
 
-function mergeRequestParams(req: any): Record<string, any> {
+function mergeRequestParams(req: any): JsonObject {
   const query = req.query || {}
   const body = req.body || {}
-  const params: Record<string, any> = { ...query }
+  const params: JsonObject = { ...query }
 
   for (const [key, value] of Object.entries(body)) {
     if (params[key] === undefined && key !== 'param') {