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/services/claim/kuaishou-cloud-sync-service.ts

@@ -5,6 +5,7 @@ import {
   refreshKuaishouCloudTaskRoleInfo,
 } from '../fulfillment/kuaishou-cloud/index.js'
 import type { TaskRow } from '../../types/repository/rows.js'
+import { parseTaskContext as parseTaskContextValue } from '../../utils/task-json.js'
 
 export async function syncKuaishouCloudRoleInfo(task: TaskRow) {
   const flow = normalizeKuaishouCloudFlow(parseTaskContext(task).kuaishouCloudFulfillment)
@@ -45,20 +46,6 @@ export async function syncKuaishouCloudRoleInfo(task: TaskRow) {
   }
 }
 
-function parseTaskContext(task: Partial<TaskRow> | null | undefined): Record<string, any> {
-  const rawValue = task?.context_json
-
-  if (!rawValue) {
-    return {}
-  }
-
-  if (typeof rawValue === 'object') {
-    return rawValue
-  }
-
-  try {
-    return JSON.parse(String(rawValue || '{}'))
-  } catch {
-    return {}
-  }
+function parseTaskContext(task: Partial<TaskRow> | null | undefined) {
+  return parseTaskContextValue(task)
 }