feat: 引入deepseek结构化输出

api/app/agents/chat/profile_agent.py

@@ -16,6 +16,7 @@ from app.agents.chat.prompts_profile import (
     get_profile_followup_prompt,
     get_profile_greeting_prompt,
 )
+from app.features.memoir.memoir_images.json_payload import extract_json_payload
 
 logger = get_logger(__name__)
 
@@ -58,9 +59,13 @@ class ProfileAgent:
             prompt = get_profile_extraction_prompt(
                 user_message, missing_fields, recent_dialogue=recent_dialogue or None
             )
-            response = await self.llm.ainvoke(prompt)
+            json_llm = self.llm.bind(
+                model_kwargs={"response_format": {"type": "json_object"}},
+                max_tokens=512,
+            )
+            response = await json_llm.ainvoke(prompt)
             content = response.content.strip()
-            parsed = json.loads(content)
+            parsed = json.loads(extract_json_payload(content))
             result = {}
             if "birth_year" in parsed and parsed["birth_year"] is not None:
                 raw = parsed["birth_year"]