fix: tolerate AI manifest YAML colons

dat-gateway/src/main/java/io/shinhanlife/dat/mcg/presentation/ScaffoldingController.java

@@ -106,6 +106,7 @@ public class ScaffoldingController {
                     confusable-servers must contain only other plausible target server IDs and must never contain the current server-id.
                     descriptions, business domains, outcomes, entities, capabilities, selection/rejection rules,
                     and decision policy must all be natural and specific Korean text.
+                    Enclose every scalar string value in double quotes so Korean text containing a colon (for example "예: 급여") remains valid YAML.
                     Use valid YAML only, without Markdown fences or explanations.
                     Pod module: %s
                     Business description: %s
@@ -471,7 +472,7 @@ public class ScaffoldingController {
 
         if ("Qwen3-Coder".equalsIgnoreCase(resolvedModel) || "Gemma-4-31B".equalsIgnoreCase(resolvedModel)) {
             String liteLlmBaseUrl = "https://dev-iam-litellm.shinhanlife.co.kr:18020";
-            String apiKey = "Gemma-4-31B".equalsIgnoreCase(resolvedModel) ? "sk-EH107wYBZuU6RUTqthR17A" : "sk-UJ2IRenvaMPbY3ozQdj6zw";
+            String apiKey = "Gemma-4-31B".equalsIgnoreCase(resolvedModel) ? "sk-EH107wYBZuu6RUTqthRl7A" : "sk-UJ2IRenvaMPbY3ozQdj6zw";
 
             org.springframework.ai.openai.api.OpenAiApi openAiApi = org.springframework.ai.openai.api.OpenAiApi.builder()
                     .baseUrl(liteLlmBaseUrl)