From 7aef1a6d50d573ce9154211909485da3677ddef7 Mon Sep 17 00:00:00 2001
From: yml2213 <a2213290201@gmail.com>
Date: Tue, 26 May 2026 08:45:06 +0800
Subject: [PATCH] =?UTF-8?q?=E5=BC=80=E5=90=AF=E5=90=8E=E7=AB=AF=E4=B8=A5?=
 =?UTF-8?q?=E6=A0=BC=E7=A9=BA=E5=80=BC=E6=A3=80=E6=9F=A5?=
MIME-Version: 1.0
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---
 apps/backend/src/routes/admin/orders.ts       |  2 +-
 .../routes/admin/platform-config/ninetyone.ts |  4 +--
 apps/backend/src/routes/admin/shared.ts       | 11 +++++++
 apps/backend/src/routes/admin/tasks.ts        |  4 +--
 apps/backend/src/routes/admin/users.ts        |  8 ++---
 .../src/services/admin/admin-auth-service.ts  | 30 +++++++++++++++++--
 .../src/services/admin/admin-read-service.ts  |  3 +-
 .../admin/admin-read-shared-helpers.ts        |  2 +-
 .../platform-config/cloudtentacles-service.ts |  4 +--
 .../claim/kuaishou-cloud-claim-context.ts     |  2 +-
 .../claim/kuaishou-cloud-claim-service.ts     |  2 +-
 .../claim/kuaishou-cloud-sync-service.ts      |  4 +--
 .../kuaishou-cloud-task-service.ts            |  4 +--
 .../kuaishou-cloud/cloudtentacles-context.ts  | 10 ++++++-
 .../kuaishou-cloud/task-finalization.ts       |  6 ++++
 .../services/order/delivery-task-service.ts   | 26 ++++++++++------
 .../cloudtentacles/debug-flow-service.ts      |  6 ++--
 .../kuaishou-eticket/source-config-service.ts |  2 +-
 .../src/services/scheduler/config-service.ts  |  4 ++-
 apps/backend/src/utils/http.ts                |  4 +--
 apps/backend/tsconfig.json                    |  1 +
 21 files changed, 101 insertions(+), 38 deletions(-)

diff --git a/apps/backend/src/routes/admin/orders.ts b/apps/backend/src/routes/admin/orders.ts
index bbdbc471..eb4f9d6d 100644
--- a/apps/backend/src/routes/admin/orders.ts
+++ b/apps/backend/src/routes/admin/orders.ts
@@ -19,7 +19,7 @@ router.get('/orders', createJsonHandler(
 ))
 
 router.get('/orders/:orderId', createJsonHandler(
-  (req) => getAdminOrderDetail((req.params as AdminOrderRouteParams).orderId),
+  (req) => getAdminOrderDetail(String((req.params as AdminOrderRouteParams).orderId || '')),
   {
     successMessage: 'ok',
     errorMessage: '读取订单详情失败',
diff --git a/apps/backend/src/routes/admin/platform-config/ninetyone.ts b/apps/backend/src/routes/admin/platform-config/ninetyone.ts
index 1da89d08..767112fe 100644
--- a/apps/backend/src/routes/admin/platform-config/ninetyone.ts
+++ b/apps/backend/src/routes/admin/platform-config/ninetyone.ts
@@ -23,7 +23,7 @@ router.get(
 router.post(
   "/ninetyone/orders/:id/retry",
   createJsonHandler(
-    (req) => retryAdminNinetyoneOrder((req.params as AdminEntityRouteParams).id),
+    (req) => retryAdminNinetyoneOrder(String((req.params as AdminEntityRouteParams).id || "")),
     {
       successMessage: "91卡券订单已重试",
       errorMessage: "重试 91卡券订单失败",
@@ -49,7 +49,7 @@ router.post(
   createJsonHandler(
     (req) =>
       failAdminNinetyoneOrder(
-        (req.params as AdminEntityRouteParams).id,
+        String((req.params as AdminEntityRouteParams).id || ""),
         req.body as { reason?: string }
       ),
     {
diff --git a/apps/backend/src/routes/admin/shared.ts b/apps/backend/src/routes/admin/shared.ts
index a00e302f..5bd5d5a3 100644
--- a/apps/backend/src/routes/admin/shared.ts
+++ b/apps/backend/src/routes/admin/shared.ts
@@ -73,6 +73,17 @@ export function requireAdminRoles(allowedRoles: string[]) {
   }
 }
 
+export function getRequiredAdminSession(req: Request): AdminSession {
+  if (req.adminSession) {
+    return req.adminSession
+  }
+
+  throw createHttpError('未登录或登录已失效', {
+    statusCode: 401,
+    errorCode: 'admin_auth_required',
+  })
+}
+
 async function recordAdminAudit(
   session: AdminSession | null | undefined,
   req: Request,
diff --git a/apps/backend/src/routes/admin/tasks.ts b/apps/backend/src/routes/admin/tasks.ts
index 038d89af..68ccc81d 100644
--- a/apps/backend/src/routes/admin/tasks.ts
+++ b/apps/backend/src/routes/admin/tasks.ts
@@ -24,8 +24,8 @@ import type { AdminTaskActionResponse } from "../../types/admin-write-models.js"
 
 const router = Router();
 
-function getTaskId(req: Request): string | undefined {
-  return (req.params as AdminTaskRouteParams).taskId;
+function getTaskId(req: Request): string {
+  return String((req.params as AdminTaskRouteParams).taskId || "");
 }
 
 router.get(
diff --git a/apps/backend/src/routes/admin/users.ts b/apps/backend/src/routes/admin/users.ts
index 45f532b5..66f16973 100644
--- a/apps/backend/src/routes/admin/users.ts
+++ b/apps/backend/src/routes/admin/users.ts
@@ -7,7 +7,7 @@ import {
   updateManagedAdminUserRole,
   updateManagedAdminUserStatus,
 } from '../../services/admin/admin-auth-service.js'
-import { createJsonHandler, requireAdminRoles } from './shared.js'
+import { createJsonHandler, getRequiredAdminSession, requireAdminRoles } from './shared.js'
 
 type AdminUserMutationResult = {
   user: {
@@ -54,7 +54,7 @@ router.post('/users', createJsonHandler(
 ))
 
 router.post('/users/:userId/role', createJsonHandler(
-  (req) => updateManagedAdminUserRole(String(req.params.userId), req.body, req.adminSession),
+  (req) => updateManagedAdminUserRole(String(req.params.userId || ''), req.body, getRequiredAdminSession(req)),
   {
     successMessage: '用户角色已更新',
     errorMessage: '更新用户角色失败',
@@ -75,7 +75,7 @@ router.post('/users/:userId/role', createJsonHandler(
 ))
 
 router.post('/users/:userId/status', createJsonHandler(
-  (req) => updateManagedAdminUserStatus(String(req.params.userId), req.body, req.adminSession),
+  (req) => updateManagedAdminUserStatus(String(req.params.userId || ''), req.body, getRequiredAdminSession(req)),
   {
     successMessage: '用户状态已更新',
     errorMessage: '更新用户状态失败',
@@ -96,7 +96,7 @@ router.post('/users/:userId/status', createJsonHandler(
 ))
 
 router.post('/users/:userId/reset-password', createJsonHandler(
-  (req) => resetManagedAdminUserPassword(String(req.params.userId), req.body),
+  (req) => resetManagedAdminUserPassword(String(req.params.userId || ''), req.body),
   {
     successMessage: '用户密码已重置',
     errorMessage: '重置用户密码失败',
diff --git a/apps/backend/src/services/admin/admin-auth-service.ts b/apps/backend/src/services/admin/admin-auth-service.ts
index 13d2294a..4fb558ba 100644
--- a/apps/backend/src/services/admin/admin-auth-service.ts
+++ b/apps/backend/src/services/admin/admin-auth-service.ts
@@ -171,8 +171,8 @@ export async function getAdminSessionSummary(token: unknown): Promise<JsonObject
   }
 }
 
-export function requireAdminRole(session: { role?: string }, allowedRoles: string[]): void {
-  if (allowedRoles.includes(session.role)) {
+export function requireAdminRole(session: { role?: string } | null | undefined, allowedRoles: string[]): void {
+  if (session && allowedRoles.includes(session.role || '')) {
     return
   }
 
@@ -236,6 +236,12 @@ export async function createManagedAdminUser(payload: JsonObject = {}): Promise<
     createdAt: now,
     updatedAt: now,
   })
+  if (!created) {
+    throw createHttpError('后台用户创建失败', {
+      statusCode: 500,
+      errorCode: 'admin_user_create_failed',
+    })
+  }
 
   return {
     user: mapAdminUser(created),
@@ -262,6 +268,12 @@ export async function updateManagedAdminUserRole(
     session_version: nextAdminSessionVersion(user),
     updated_at: nowIso(),
   })
+  if (!updated) {
+    throw createHttpError('后台用户更新失败', {
+      statusCode: 500,
+      errorCode: 'admin_user_update_failed',
+    })
+  }
 
   return {
     user: mapAdminUser(updated),
@@ -288,6 +300,12 @@ export async function updateManagedAdminUserStatus(
     session_version: nextAdminSessionVersion(user),
     updated_at: nowIso(),
   })
+  if (!updated) {
+    throw createHttpError('后台用户更新失败', {
+      statusCode: 500,
+      errorCode: 'admin_user_update_failed',
+    })
+  }
 
   return {
     user: mapAdminUser(updated),
@@ -311,6 +329,12 @@ export async function resetManagedAdminUserPassword(userId: number | string, pay
     session_version: nextAdminSessionVersion(user),
     updated_at: nowIso(),
   })
+  if (!updated) {
+    throw createHttpError('后台用户更新失败', {
+      statusCode: 500,
+      errorCode: 'admin_user_update_failed',
+    })
+  }
 
   return {
     user: mapAdminUser(updated),
@@ -490,7 +514,7 @@ async function ensureAdminUserChangeAllowed(
   }
 }
 
-function mapAdminUser(user: AdminUserRow | null): JsonObject {
+function mapAdminUser(user: AdminUserRow): JsonObject {
   return {
     userId: Number(user.id),
     username: String(user.username || ''),
diff --git a/apps/backend/src/services/admin/admin-read-service.ts b/apps/backend/src/services/admin/admin-read-service.ts
index 902f00c2..da7b4138 100644
--- a/apps/backend/src/services/admin/admin-read-service.ts
+++ b/apps/backend/src/services/admin/admin-read-service.ts
@@ -158,9 +158,10 @@ export async function getAdminTaskDetail(
     })
   }
 
+  const primaryClaimTokenId = getTaskPrimaryClaimTokenId(task)
   const [order, claimToken, taskEvents] = await Promise.all([
     getOrderById(task.order_id),
-    getTaskPrimaryClaimTokenId(task) ? getClaimTokenById(getTaskPrimaryClaimTokenId(task)) : Promise.resolve(null),
+    primaryClaimTokenId ? getClaimTokenById(primaryClaimTokenId) : Promise.resolve(null),
     listTaskEventsByTaskId(task.id),
   ])
   const orderItems = order ? await listOrderItemsByOrderId(order.id) : []
diff --git a/apps/backend/src/services/admin/admin-read-shared-helpers.ts b/apps/backend/src/services/admin/admin-read-shared-helpers.ts
index f7a5c27b..1089fbb5 100644
--- a/apps/backend/src/services/admin/admin-read-shared-helpers.ts
+++ b/apps/backend/src/services/admin/admin-read-shared-helpers.ts
@@ -269,7 +269,7 @@ export function canRegenerateClaimLinkForViewer(task: TaskLike, viewerContext: A
     return false
   }
 
-  const baseAllowed = ['link_generated', 'claimed', 'role_confirmed', 'retry_pending', 'manual_review'].includes(task.task_status)
+  const baseAllowed = ['link_generated', 'claimed', 'role_confirmed', 'retry_pending', 'manual_review'].includes(String(task.task_status || '').trim())
 
   if (!baseAllowed) {
     return false
diff --git a/apps/backend/src/services/admin/platform-config/cloudtentacles-service.ts b/apps/backend/src/services/admin/platform-config/cloudtentacles-service.ts
index 6465c039..6c10aff4 100644
--- a/apps/backend/src/services/admin/platform-config/cloudtentacles-service.ts
+++ b/apps/backend/src/services/admin/platform-config/cloudtentacles-service.ts
@@ -134,7 +134,7 @@ export function updateAdminCloudtentaclesSourceConfig(
   });
   const saved = saveCloudtentaclesSourceByKey(sourceKey, normalized);
   const shouldClearSession = hasCloudtentaclesCredentialContextChanged(
-    current,
+    current || undefined,
     saved
   );
   const session = shouldClearSession
@@ -146,7 +146,7 @@ export function updateAdminCloudtentaclesSourceConfig(
     filePath: getCloudtentaclesSourcesFilePath(),
     sessionFilePath: getCloudtentaclesSessionFilePath(),
     source: mapAdminCloudtentaclesSourceConfig(saved),
-    session: mapAdminCloudtentaclesSession(session),
+    session: mapAdminCloudtentaclesSession(session || undefined),
   };
 }
 
diff --git a/apps/backend/src/services/claim/kuaishou-cloud-claim-context.ts b/apps/backend/src/services/claim/kuaishou-cloud-claim-context.ts
index f0126b70..3cc19e9e 100644
--- a/apps/backend/src/services/claim/kuaishou-cloud-claim-context.ts
+++ b/apps/backend/src/services/claim/kuaishou-cloud-claim-context.ts
@@ -241,7 +241,7 @@ async function expireClaimContext(claimToken: ClaimTokenRow, task: TaskRow) {
       user_action_status: 'expired',
       last_error: '领取链接已过期',
       updated_at: now,
-    })
+    }) || task
   }
 
   return {
diff --git a/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts b/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts
index 15bc3847..317f69ae 100644
--- a/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts
+++ b/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts
@@ -162,7 +162,7 @@ export async function getKuaishouCloudClaimDetail(token: unknown) {
   let task = context.task
 
   if (String(task.executor_key || '').trim() === 'kuaishou_ct_assisted') {
-    task = await syncKuaishouCloudRoleInfo(task)
+    task = await syncKuaishouCloudRoleInfo(task) || task
   }
 
   return buildClaimDetailPayload({
diff --git a/apps/backend/src/services/claim/kuaishou-cloud-sync-service.ts b/apps/backend/src/services/claim/kuaishou-cloud-sync-service.ts
index ad8fcce4..2e3b3f5b 100644
--- a/apps/backend/src/services/claim/kuaishou-cloud-sync-service.ts
+++ b/apps/backend/src/services/claim/kuaishou-cloud-sync-service.ts
@@ -30,14 +30,14 @@ export async function syncKuaishouCloudRoleInfo(task: TaskRow) {
       source: 'claim_page_polling_bind_url_probe',
       actor: { source: 'system' },
     })
-    task = probed.task
+    task = probed.task || task
 
     const result = await refreshKuaishouCloudTaskRoleInfo(task, {
       source: 'claim_page_polling',
       actor: { source: 'system' },
       recordEvent: false,
     })
-    return result.task
+    return result.task || task
   } catch {
     return task
   }
diff --git a/apps/backend/src/services/fulfillment/kuaishou-cloud-task-service.ts b/apps/backend/src/services/fulfillment/kuaishou-cloud-task-service.ts
index 40e3d8cb..0b15819a 100644
--- a/apps/backend/src/services/fulfillment/kuaishou-cloud-task-service.ts
+++ b/apps/backend/src/services/fulfillment/kuaishou-cloud-task-service.ts
@@ -118,13 +118,13 @@ export async function prepareKuaishouCloudFulfillmentTask(
     let readyTask = task;
 
     if (String(task.task_status || "").trim() !== "waiting_binding") {
-      readyTask = await updateTask(task.id, {
+      readyTask = (await updateTask(task.id, {
         task_status: "waiting_binding",
         claim_token: claimLinkState.token || task.claim_token || "",
         claim_expires_at:
           claimLinkState.expiredAt || getTaskClaimExpiresAt(task),
         updated_at: now,
-      });
+      })) || task;
     }
 
     return {
diff --git a/apps/backend/src/services/fulfillment/kuaishou-cloud/cloudtentacles-context.ts b/apps/backend/src/services/fulfillment/kuaishou-cloud/cloudtentacles-context.ts
index 6ed8118e..9cfc8d37 100644
--- a/apps/backend/src/services/fulfillment/kuaishou-cloud/cloudtentacles-context.ts
+++ b/apps/backend/src/services/fulfillment/kuaishou-cloud/cloudtentacles-context.ts
@@ -69,7 +69,15 @@ export function resolvePersistedCloudtentaclesContextWithFallback(
       continue;
     }
 
-    const token = String(session?.token || "").trim();
+    if (!session) {
+      lastError = createHttpError(
+        `cloudtentacles 账号 ${sourceKey} 没有可用 token`,
+        { statusCode: 409, errorCode: "kuaishou_cloud_missing_cloud_token" }
+      );
+      continue;
+    }
+
+    const token = String(session.token || "").trim();
     if (!token) {
       lastError = createHttpError(
         `cloudtentacles 账号 ${sourceKey} 没有可用 token`,
diff --git a/apps/backend/src/services/fulfillment/kuaishou-cloud/task-finalization.ts b/apps/backend/src/services/fulfillment/kuaishou-cloud/task-finalization.ts
index d82576f4..2b75c8ba 100644
--- a/apps/backend/src/services/fulfillment/kuaishou-cloud/task-finalization.ts
+++ b/apps/backend/src/services/fulfillment/kuaishou-cloud/task-finalization.ts
@@ -116,6 +116,12 @@ export async function dispatchKuaishouCloudFulfillmentTask(
     context_json: JSON.stringify(nextContext),
     updated_at: now,
   });
+  if (!updatedTask) {
+    throw createHttpError("快手 Cloud 发货状态更新失败", {
+      statusCode: 500,
+      errorCode: "kuaishou_cloud_dispatch_update_failed",
+    });
+  }
 
   await createTaskEvent(
     task.id,
diff --git a/apps/backend/src/services/order/delivery-task-service.ts b/apps/backend/src/services/order/delivery-task-service.ts
index f94d7048..9dc10cb3 100644
--- a/apps/backend/src/services/order/delivery-task-service.ts
+++ b/apps/backend/src/services/order/delivery-task-service.ts
@@ -69,7 +69,7 @@ type TaskContext = {
 export async function syncDeliveryTasksForOrder(
   order: OrderRow,
   orderItems: OrderItemRow[],
-): Promise<Array<TaskRow | null>> {
+): Promise<TaskRow[]> {
   return syncDeliveryTasksForOrderWithDeps(order, orderItems)
 }
 
@@ -77,7 +77,7 @@ export async function syncDeliveryTasksForOrderWithDeps(
   order: OrderRow,
   orderItems: OrderItemRow[],
   deps: DeliveryTaskDeps = {},
-): Promise<Array<TaskRow | null>> {
+): Promise<TaskRow[]> {
   const {
     createTask: createDeliveryTask = createTask,
     listTasksByOrderId: listTasks = listTasksByOrderId,
@@ -104,11 +104,12 @@ export async function syncDeliveryTasksForOrderWithDeps(
     }
 
     const itemMap = new Map(orderItems.map((item) => [item.id, item]))
-    return Promise.all(existingTasks.map((task) => preparePaidTask({
+    const preparedTasks = await Promise.all(existingTasks.map((task) => preparePaidTask({
       ...task,
       skuCode: itemMap.get(task.order_item_id)?.sku_code || '',
       skuName: itemMap.get(task.order_item_id)?.sku_name || '',
     }, runtimeDeps)))
+    return preparedTasks.filter(isTaskRow)
   }
 
   const tasks: DeliveryTaskRow[] = []
@@ -243,11 +244,13 @@ export async function syncDeliveryTasksForOrderWithDeps(
         updatedAt: createdAt,
       })
 
-      tasks.push({
-        ...task,
-        skuCode: item.sku_code,
-        skuName: item.sku_name,
-      })
+      if (task) {
+        tasks.push({
+          ...task,
+          skuCode: item.sku_code,
+          skuName: item.sku_name,
+        })
+      }
     }
   }
 
@@ -255,7 +258,8 @@ export async function syncDeliveryTasksForOrderWithDeps(
     return tasks
   }
 
-  return Promise.all(tasks.map((task) => preparePaidTask(task, runtimeDeps)))
+  const preparedTasks = await Promise.all(tasks.map((task) => preparePaidTask(task, runtimeDeps)))
+  return preparedTasks.filter(isTaskRow)
 }
 
 async function preparePaidTask(
@@ -380,6 +384,10 @@ function parseJsonObject(value: unknown): JsonObject {
   }
 }
 
+function isTaskRow(task: TaskRow | DeliveryTaskRow | null | undefined): task is TaskRow {
+  return Boolean(task && Number(task.id || 0) > 0)
+}
+
 function isKuaishouCloudExecutor(value: unknown): boolean {
   return String(value || '').trim() === 'kuaishou_ct_assisted'
 }
diff --git a/apps/backend/src/services/platforms/cloudtentacles/debug-flow-service.ts b/apps/backend/src/services/platforms/cloudtentacles/debug-flow-service.ts
index affde4f3..4f933f65 100644
--- a/apps/backend/src/services/platforms/cloudtentacles/debug-flow-service.ts
+++ b/apps/backend/src/services/platforms/cloudtentacles/debug-flow-service.ts
@@ -181,8 +181,10 @@ async function runFlowStep<T>(
   runner: () => Promise<T>,
   options: FlowStepOptions = {},
 ) {
-  const retries = Number.isInteger(options.retries) && options.retries > 0 ? options.retries : 0
-  const retryDelayMs = Number.isFinite(options.retryDelayMs) && options.retryDelayMs > 0 ? options.retryDelayMs : 1000
+  const rawRetries = Number(options.retries)
+  const rawRetryDelayMs = Number(options.retryDelayMs)
+  const retries = Number.isInteger(rawRetries) && rawRetries > 0 ? rawRetries : 0
+  const retryDelayMs = Number.isFinite(rawRetryDelayMs) && rawRetryDelayMs > 0 ? rawRetryDelayMs : 1000
 
   for (let attempt = 0; attempt <= retries; attempt += 1) {
     try {
diff --git a/apps/backend/src/services/platforms/kuaishou-eticket/source-config-service.ts b/apps/backend/src/services/platforms/kuaishou-eticket/source-config-service.ts
index 2e2a2c08..716ce122 100644
--- a/apps/backend/src/services/platforms/kuaishou-eticket/source-config-service.ts
+++ b/apps/backend/src/services/platforms/kuaishou-eticket/source-config-service.ts
@@ -100,7 +100,7 @@ function normalizeKuaishouEticketSourceConfig(rawValue: unknown): KuaishouEticke
     baseUrl: String(source.baseUrl || DEFAULT_BASE_URL).trim() || DEFAULT_BASE_URL,
     shops: shops
       .map((item) => normalizeKuaishouEticketShopConfig(item))
-      .filter(Boolean),
+      .filter((item): item is KuaishouEticketShopConfig => Boolean(item)),
   }
 }
 
diff --git a/apps/backend/src/services/scheduler/config-service.ts b/apps/backend/src/services/scheduler/config-service.ts
index 3aa053da..21a11a05 100644
--- a/apps/backend/src/services/scheduler/config-service.ts
+++ b/apps/backend/src/services/scheduler/config-service.ts
@@ -37,7 +37,9 @@ function loadScheduledJobsConfigFromFile() {
 export function normalizeScheduledJobsConfig(rawValue: unknown) {
   const source = isPlainObject(rawValue) ? rawValue : {}
   const rawJobs = Array.isArray(source.jobs) ? source.jobs : []
-  const jobs = rawJobs.map((item) => normalizeScheduledJob(item)).filter(Boolean)
+  const jobs = rawJobs
+    .map((item) => normalizeScheduledJob(item))
+    .filter((item): item is ReturnType<typeof normalizeCloudtentaclesHealthJob> => Boolean(item))
   const hasCloudtentaclesHealth = jobs.some((item) => item.id === CLOUDTENTACLES_HEALTH_JOB_ID)
 
   if (!hasCloudtentaclesHealth) {
diff --git a/apps/backend/src/utils/http.ts b/apps/backend/src/utils/http.ts
index 15c9f918..7e1c0569 100644
--- a/apps/backend/src/utils/http.ts
+++ b/apps/backend/src/utils/http.ts
@@ -45,8 +45,8 @@ export function buildErrorPayload(error: unknown, fallbackMessage: string) {
 export function sendRouteError(
   res: Response,
   error: unknown,
-  fallbackMessage: string,
-  scope: string
+  fallbackMessage = "服务内部错误",
+  scope = "[route]"
 ): void {
   const classification = classifyRouteError(error);
   const logger = classification.statusCode >= 500 ? logError : logWarn;
diff --git a/apps/backend/tsconfig.json b/apps/backend/tsconfig.json
index cb7c5ef6..da0b9aed 100644
--- a/apps/backend/tsconfig.json
+++ b/apps/backend/tsconfig.json
@@ -8,6 +8,7 @@
     "noEmit": true,
     "strict": false,
     "noImplicitAny": true,
+    "strictNullChecks": true,
     "skipLibCheck": true,
     "types": ["node"],
     "lib": ["ES2022"]