diff --git a/apps/backend/src/services/order/webhook-service.js b/apps/backend/src/services/order/webhook-service.ts
similarity index 98%
rename from apps/backend/src/services/order/webhook-service.js
rename to apps/backend/src/services/order/webhook-service.ts
index 2fc7a1ba..7b8a1628 100644
--- a/apps/backend/src/services/order/webhook-service.js
+++ b/apps/backend/src/services/order/webhook-service.ts
@@ -16,6 +16,13 @@ import { logWebhook } from '../../utils/logger.js'
 import { parseAmountToFen } from '../../utils/money.js'
 import { nowIso } from '../../utils/time.js'
 
+type AgisoTradeWebhookDeps = {
+  updateWebhookEvent?: typeof updateWebhookEvent
+  hasConfiguredOrderItems?: typeof hasConfiguredOrderItems
+  upsertOrderFromWebhook?: typeof upsertOrderFromWebhook
+  enrichAgisoXianyuTradeOrder?: typeof enrichAgisoXianyuTradeOrder
+}
+
 export async function processAgisoTradeWebhook(requestLike) {
   const parsed = parseAgisoTradeRequest(requestLike)
   const webhookEvent = await createWebhookEvent(buildWebhookEventInput(requestLike, parsed))
@@ -87,7 +94,7 @@ export async function executeAgisoTradeWebhookWithDeps(
   parsed,
   webhookEventId,
   { requestId = '' } = {},
-  deps = {},
+  deps: AgisoTradeWebhookDeps = {},
 ) {
   const updateEvent = deps.updateWebhookEvent || updateWebhookEvent
   const hasConfiguredItems = deps.hasConfiguredOrderItems || hasConfiguredOrderItems
@@ -280,7 +287,11 @@ export async function executeAgisoTradeWebhookWithDeps(
   }
 }
 
-async function enrichTradeBeforeUpsert(parsed, { requestId = '', webhookEventId = null } = {}, deps = {}) {
+async function enrichTradeBeforeUpsert(
+  parsed,
+  { requestId = '', webhookEventId = null } = {},
+  deps: AgisoTradeWebhookDeps = {},
+) {
   const enrichOrder = deps.enrichAgisoXianyuTradeOrder || enrichAgisoXianyuTradeOrder
 
   if (parsed.provider !== 'agiso' || parsed.platform !== 'xianyu') {
diff --git a/docs/backend-typescript-migration-plan.md b/docs/backend-typescript-migration-plan.md
index 90f81aa0..ceadafd1 100644
--- a/docs/backend-typescript-migration-plan.md
+++ b/docs/backend-typescript-migration-plan.md
@@ -373,6 +373,14 @@
     - `npm run typecheck`
     - `npm run build`
     - `npm test` 共 139 个用例通过
+65. webhook service 迁移到 `.ts`：
+    - `src/services/order/webhook-service.ts`
+66. webhook 编排依赖注入边界已补最小类型，入口编排、解析、验签、忽略、补查、upsert 逻辑已进入 TypeScript 编译链路
+67. Docker 内验证通过：
+    - `src/services/order/webhook-service.test.js` 共 9 个用例通过
+    - `npm run typecheck`
+    - `npm run build`
+    - `npm test` 共 139 个用例通过
 
 ## 下一步建议