fix issues in core

core/identity/application/use-cases/StartAuthUseCase.test.ts

@@ -43,7 +43,7 @@ describe('StartAuthUseCase', () => {
 
   it('returns ok and presents redirect when provider call succeeds', async () => {
     const input: StartAuthInput = {
-      provider: 'IRACING_DEMO' as any,
+      provider: 'IRACING_DEMO',
       returnTo: 'https://app/callback',
     };
 
@@ -69,7 +69,7 @@ describe('StartAuthUseCase', () => {
 
   it('wraps unexpected errors as REPOSITORY_ERROR and logs them', async () => {
     const input: StartAuthInput = {
-      provider: 'IRACING_DEMO' as any,
+      provider: 'IRACING_DEMO',
       returnTo: 'https://app/callback',
     };