headless login SSA 백엔드 작업

devfront/src/features/clients/ClientGeneralPage.tsx

@@ -981,10 +981,8 @@ function ClientGeneralPage() {
         .map((scope) => scope.name.trim())
         .filter(Boolean);
 
-      const persistedClientType = headlessLoginEnabled ? "pkce" : clientType;
-      const effectiveTokenEndpointAuthMethod = headlessLoginEnabled
-        ? "none"
-        : tokenEndpointAuthMethod;
+      const persistedClientType = headlessLoginEnabled ? "private" : clientType;
+      const effectiveTokenEndpointAuthMethod = tokenEndpointAuthMethod;
 
       const payload: ClientUpsertRequest = {
         name,
@@ -992,7 +990,8 @@ function ClientGeneralPage() {
         scopes: scopeNames,
         tokenEndpointAuthMethod: effectiveTokenEndpointAuthMethod,
         jwksUri:
-          effectiveTokenEndpointAuthMethod === "private_key_jwt" &&
+          (headlessLoginEnabled ||
+            effectiveTokenEndpointAuthMethod === "private_key_jwt") &&
           trimmedJwksUri
             ? trimmedJwksUri
             : undefined,