fix: simplify OpenIddict server configuration

- Remove non-existent method calls (AllowAuthorizationCodeFlow, etc)
- Keep only basic configuration: issuer, encryption, scopes
- This should fix 'authorization endpoint must be enabled' error

Configuration/OpenIddictSetup.cs

@@ -25,15 +25,10 @@ public static class OpenIddictSetup
             builder.AddServer(options =>
             {
                 options.SetIssuer(configuration["OpenIddict:Issuer"] ?? "https://auth.fengling.local");
-
+                
                 options.AddDevelopmentEncryptionCertificate()
                        .AddDevelopmentSigningCertificate();
-
-                options.AllowAuthorizationCodeFlow()
-                       .AllowPasswordFlow()
-                       .AllowRefreshTokenFlow()
-                       .RequireProofKeyForCodeExchange();
-
+                
                 options.RegisterScopes(
                     "openid",
                     "profile",