feat(stage1): этап 1 — извлечение resource_type через LLM по списку реальных ресурсов

assist.js

@@ -270,7 +270,8 @@ function createSemaphore(max) {
  *   baseUrl?:string,
  *   apiKey?:string,
  *   model?:string,
- *   temperature?:number
+ *   temperature?:number,
+ *   responseFormat?:{type:string} // напр. {type:'json_object'}
  * }} params
  * @returns {Promise<string>} — содержимое choices[0].message.content
  */
@@ -282,6 +283,7 @@ async function llmChat({
     apiKey = ENV.LLM_API_KEY,
     model = ENV.LLM_MODEL,
     temperature,
+    responseFormat,
 }) {
     const base = String(baseUrl).replace(/\/+$/, '');
     const url = `${base}/v1/chat/completions`;
@@ -293,6 +295,9 @@ async function llmChat({
     if (temperature !== undefined && temperature !== null) {
         payload.temperature = temperature;
     }
+    if (responseFormat !== undefined && responseFormat !== null) {
+        payload.response_format = responseFormat;
+    }
 
     const signal = controller ? controller.signal : undefined;