test: transformer and gemini-3.5-flash

inference_api.py

@@ -671,7 +671,7 @@ def trigger_gemini_explanation(skills: List[str], preference: str, question: Opt
     try:
         import google.generativeai as genai
         genai.configure(api_key=GEMINI_API_KEY)
-        model = genai.GenerativeModel("gemini-3.1-flash-lite")
+        model = genai.GenerativeModel("gemini-3.5-flash")
         response = model.generate_content(prompt)
         text = response.text.strip()
         logger.info(f"[Gemini Response]\n{text}")