diff --git a/src/__tests__/lib/easy-pay/client.test.ts b/src/__tests__/lib/easy-pay/client.test.ts
index 33f82ac..cdc0f1f 100644
--- a/src/__tests__/lib/easy-pay/client.test.ts
+++ b/src/__tests__/lib/easy-pay/client.test.ts
@@ -7,9 +7,9 @@ const { mockGetEnv } = vi.hoisted(() => ({
     EASY_PAY_API_BASE: 'https://pay.example.com',
     EASY_PAY_NOTIFY_URL: 'https://pay.example.com/api/easy-pay/notify',
     EASY_PAY_RETURN_URL: 'https://pay.example.com/pay/result',
-    EASY_PAY_CID: undefined,
-    EASY_PAY_CID_ALIPAY: undefined,
-    EASY_PAY_CID_WXPAY: undefined,
+    EASY_PAY_CID: undefined as string | undefined,
+    EASY_PAY_CID_ALIPAY: undefined as string | undefined,
+    EASY_PAY_CID_WXPAY: undefined as string | undefined,
   })),
 }));
 vi.mock('@/lib/config', () => ({
@@ -108,10 +108,9 @@ describe('EasyPay client', () => {
 
     it('should throw when API returns code !== 1', async () => {
       global.fetch = vi.fn().mockResolvedValue(
-        new Response(
-          JSON.stringify({ code: -1, msg: 'Invalid parameter' }),
-          { headers: { 'content-type': 'application/json' } },
-        ),
+        new Response(JSON.stringify({ code: -1, msg: 'Invalid parameter' }), {
+          headers: { 'content-type': 'application/json' },
+        }),
       ) as typeof fetch;
 
       await expect(
@@ -296,15 +295,12 @@ describe('EasyPay client', () => {
 
     it('should throw when API returns code !== 1', async () => {
       global.fetch = vi.fn().mockResolvedValue(
-        new Response(
-          JSON.stringify({ code: -1, msg: 'Order not found' }),
-          { headers: { 'content-type': 'application/json' } },
-        ),
+        new Response(JSON.stringify({ code: -1, msg: 'Order not found' }), {
+          headers: { 'content-type': 'application/json' },
+        }),
       ) as typeof fetch;
 
-      await expect(queryOrder('nonexistent-order')).rejects.toThrow(
-        'EasyPay query order failed: Order not found',
-      );
+      await expect(queryOrder('nonexistent-order')).rejects.toThrow('EasyPay query order failed: Order not found');
     });
 
     it('should throw with "unknown error" when msg is absent', async () => {
@@ -314,9 +310,7 @@ describe('EasyPay client', () => {
         }),
       ) as typeof fetch;
 
-      await expect(queryOrder('order-err')).rejects.toThrow(
-        'EasyPay query order failed: unknown error',
-      );
+      await expect(queryOrder('order-err')).rejects.toThrow('EasyPay query order failed: unknown error');
     });
 
     it('should parse all response fields correctly', async () => {
diff --git a/src/__tests__/lib/order/limits.test.ts b/src/__tests__/lib/order/limits.test.ts
index 7bcea84..0ba1af1 100644
--- a/src/__tests__/lib/order/limits.test.ts
+++ b/src/__tests__/lib/order/limits.test.ts
@@ -1,4 +1,5 @@
 import { vi, describe, it, expect, beforeEach } from 'vitest';
+import type { MethodDefaultLimits } from '@/lib/payment/types';
 
 vi.mock('@/lib/db', () => ({
   prisma: {
@@ -28,7 +29,7 @@ beforeEach(() => {
   vi.clearAllMocks();
   // 默认：getEnv 返回无渠道限额字段，provider 无默认值
   mockedGetEnv.mockReturnValue({} as ReturnType<typeof getEnv>);
-  mockedGetDefaultLimit.mockReturnValue(undefined as any);
+  mockedGetDefaultLimit.mockReturnValue(undefined);
 });
 
 describe('getMethodDailyLimit', () => {
@@ -39,35 +40,35 @@ describe('getMethodDailyLimit', () => {
   it('从 getEnv 读取渠道每日限额', () => {
     mockedGetEnv.mockReturnValue({
       MAX_DAILY_AMOUNT_ALIPAY: 5000,
-    } as any);
+    } as unknown as ReturnType<typeof getEnv>);
     expect(getMethodDailyLimit('alipay')).toBe(5000);
   });
 
   it('环境变量 0 表示不限制', () => {
     mockedGetEnv.mockReturnValue({
       MAX_DAILY_AMOUNT_WXPAY: 0,
-    } as any);
+    } as unknown as ReturnType<typeof getEnv>);
     expect(getMethodDailyLimit('wxpay')).toBe(0);
   });
 
   it('getEnv 未设置时回退到 provider 默认值', () => {
-    mockedGetEnv.mockReturnValue({} as any);
-    mockedGetDefaultLimit.mockReturnValue({ dailyMax: 3000 } as any);
+    mockedGetEnv.mockReturnValue({} as ReturnType<typeof getEnv>);
+    mockedGetDefaultLimit.mockReturnValue({ dailyMax: 3000 } as MethodDefaultLimits);
     expect(getMethodDailyLimit('stripe')).toBe(3000);
   });
 
   it('getEnv 设置时覆盖 provider 默认值', () => {
     mockedGetEnv.mockReturnValue({
       MAX_DAILY_AMOUNT_STRIPE: 8000,
-    } as any);
-    mockedGetDefaultLimit.mockReturnValue({ dailyMax: 3000 } as any);
+    } as unknown as ReturnType<typeof getEnv>);
+    mockedGetDefaultLimit.mockReturnValue({ dailyMax: 3000 } as MethodDefaultLimits);
     expect(getMethodDailyLimit('stripe')).toBe(8000);
   });
 
   it('paymentType 大小写不敏感（key 构造用 toUpperCase）', () => {
     mockedGetEnv.mockReturnValue({
       MAX_DAILY_AMOUNT_ALIPAY: 2000,
-    } as any);
+    } as unknown as ReturnType<typeof getEnv>);
     expect(getMethodDailyLimit('alipay')).toBe(2000);
   });
 
@@ -76,8 +77,8 @@ describe('getMethodDailyLimit', () => {
   });
 
   it('getEnv 无值且 provider 默认值也无 dailyMax 时回退 process.env', () => {
-    mockedGetEnv.mockReturnValue({} as any);
-    mockedGetDefaultLimit.mockReturnValue({} as any); // no dailyMax
+    mockedGetEnv.mockReturnValue({} as ReturnType<typeof getEnv>);
+    mockedGetDefaultLimit.mockReturnValue({} as MethodDefaultLimits); // no dailyMax
     process.env['MAX_DAILY_AMOUNT_ALIPAY'] = '7777';
     try {
       expect(getMethodDailyLimit('alipay')).toBe(7777);
@@ -111,13 +112,13 @@ describe('getMethodSingleLimit', () => {
   });
 
   it('process.env 未设置时回退到 provider 默认值', () => {
-    mockedGetDefaultLimit.mockReturnValue({ singleMax: 200 } as any);
+    mockedGetDefaultLimit.mockReturnValue({ singleMax: 200 } as MethodDefaultLimits);
     expect(getMethodSingleLimit('alipay')).toBe(200);
   });
 
   it('process.env 设置时覆盖 provider 默认值', () => {
     process.env['MAX_SINGLE_AMOUNT_ALIPAY'] = '999';
-    mockedGetDefaultLimit.mockReturnValue({ singleMax: 200 } as any);
+    mockedGetDefaultLimit.mockReturnValue({ singleMax: 200 } as MethodDefaultLimits);
     try {
       expect(getMethodSingleLimit('alipay')).toBe(999);
     } finally {
@@ -127,7 +128,7 @@ describe('getMethodSingleLimit', () => {
 
   it('无效 process.env 值回退到 provider 默认值', () => {
     process.env['MAX_SINGLE_AMOUNT_ALIPAY'] = 'abc';
-    mockedGetDefaultLimit.mockReturnValue({ singleMax: 150 } as any);
+    mockedGetDefaultLimit.mockReturnValue({ singleMax: 150 } as MethodDefaultLimits);
     try {
       expect(getMethodSingleLimit('alipay')).toBe(150);
     } finally {
diff --git a/src/__tests__/lib/sub2api/client-listSubscriptions.test.ts b/src/__tests__/lib/sub2api/client-listSubscriptions.test.ts
index f0dbfa6..970f44e 100644
--- a/src/__tests__/lib/sub2api/client-listSubscriptions.test.ts
+++ b/src/__tests__/lib/sub2api/client-listSubscriptions.test.ts
@@ -17,7 +17,7 @@ describe('listSubscriptions', () => {
   it('should call correct URL with no query params when no params provided', async () => {
     global.fetch = vi.fn().mockResolvedValue({
       ok: true,
-      json: () => Promise.resolve({ data: [], total: 0, page: 1, page_size: 50 }),
+      json: () => Promise.resolve({ data: { items: [], total: 0, page: 1, page_size: 50 } }),
     }) as typeof fetch;
 
     await listSubscriptions();
@@ -30,7 +30,7 @@ describe('listSubscriptions', () => {
   it('should build correct query params when all params provided', async () => {
     global.fetch = vi.fn().mockResolvedValue({
       ok: true,
-      json: () => Promise.resolve({ data: [], total: 0, page: 2, page_size: 10 }),
+      json: () => Promise.resolve({ data: { items: [], total: 0, page: 2, page_size: 10 } }),
     }) as typeof fetch;
 
     await listSubscriptions({
@@ -51,13 +51,11 @@ describe('listSubscriptions', () => {
   });
 
   it('should parse normal response correctly', async () => {
-    const mockSubs = [
-      { id: 1, user_id: 42, group_id: 5, status: 'active', expires_at: '2026-12-31' },
-    ];
+    const mockSubs = [{ id: 1, user_id: 42, group_id: 5, status: 'active', expires_at: '2026-12-31' }];
 
     global.fetch = vi.fn().mockResolvedValue({
       ok: true,
-      json: () => Promise.resolve({ data: mockSubs, total: 1, page: 1, page_size: 50 }),
+      json: () => Promise.resolve({ data: { items: mockSubs, total: 1, page: 1, page_size: 50 } }),
     }) as typeof fetch;
 
     const result = await listSubscriptions({ user_id: 42 });
diff --git a/src/app/admin/dashboard/page.tsx b/src/app/admin/dashboard/page.tsx
index aec54b2..ed68a35 100644
--- a/src/app/admin/dashboard/page.tsx
+++ b/src/app/admin/dashboard/page.tsx
@@ -7,7 +7,7 @@ import DashboardStats from '@/components/admin/DashboardStats';
 import DailyChart from '@/components/admin/DailyChart';
 import Leaderboard from '@/components/admin/Leaderboard';
 import PaymentMethodChart from '@/components/admin/PaymentMethodChart';
-import { resolveLocale, type Locale } from '@/lib/locale';
+import { resolveLocale } from '@/lib/locale';
 
 interface DashboardData {
   summary: {
diff --git a/src/app/admin/orders/page.tsx b/src/app/admin/orders/page.tsx
index b67c2b1..93a4c8d 100644
--- a/src/app/admin/orders/page.tsx
+++ b/src/app/admin/orders/page.tsx
@@ -6,7 +6,7 @@ import OrderTable from '@/components/admin/OrderTable';
 import OrderDetail from '@/components/admin/OrderDetail';
 import PaginationBar from '@/components/PaginationBar';
 import PayPageLayout from '@/components/PayPageLayout';
-import { resolveLocale, type Locale } from '@/lib/locale';
+import { resolveLocale } from '@/lib/locale';
 
 interface AdminOrder {
   id: string;
diff --git a/src/app/admin/page.tsx b/src/app/admin/page.tsx
index aec54b2..ed68a35 100644
--- a/src/app/admin/page.tsx
+++ b/src/app/admin/page.tsx
@@ -7,7 +7,7 @@ import DashboardStats from '@/components/admin/DashboardStats';
 import DailyChart from '@/components/admin/DailyChart';
 import Leaderboard from '@/components/admin/Leaderboard';
 import PaymentMethodChart from '@/components/admin/PaymentMethodChart';
-import { resolveLocale, type Locale } from '@/lib/locale';
+import { resolveLocale } from '@/lib/locale';
 
 interface DashboardData {
   summary: {