fix: use vitest

Author: mattzcarey

src/client/auth.test.ts

@@ -2614,17 +2614,17 @@ describe('OAuth Authorization', () => {
             get clientMetadata() {
                 return validClientMetadata;
             },
-            clientInformation: jest.fn().mockResolvedValue(undefined),
-            saveClientInformation: jest.fn().mockResolvedValue(undefined),
-            tokens: jest.fn().mockResolvedValue(undefined),
-            saveTokens: jest.fn().mockResolvedValue(undefined),
-            redirectToAuthorization: jest.fn().mockResolvedValue(undefined),
-            saveCodeVerifier: jest.fn().mockResolvedValue(undefined),
-            codeVerifier: jest.fn().mockResolvedValue('verifier123')
+            clientInformation: vi.fn().mockResolvedValue(undefined),
+            saveClientInformation: vi.fn().mockResolvedValue(undefined),
+            tokens: vi.fn().mockResolvedValue(undefined),
+            saveTokens: vi.fn().mockResolvedValue(undefined),
+            redirectToAuthorization: vi.fn().mockResolvedValue(undefined),
+            saveCodeVerifier: vi.fn().mockResolvedValue(undefined),
+            codeVerifier: vi.fn().mockResolvedValue('verifier123')
         };
 
         beforeEach(() => {
-            jest.clearAllMocks();
+            vi.clearAllMocks();
         });
 
         it('uses URL-based client ID when server supports it', async () => {