Reuse memoir JSON payload parsing

api/tasks/memoir_tasks.py

@@ -31,6 +31,7 @@ from agents.prompts.profile_prompts import format_user_profile_context
 import hashlib
 
 from services.memoir_images.parser import build_initial_image_assets, parse_image_placeholders
+from services.memoir_images.json_payload import extract_json_payload
 from services.memoir_images.prompting import MemoirImagePromptService
 from services.memoir_images.provider import LiblibImageProvider
 from services.memoir_images.schema import (
@@ -389,8 +390,7 @@ def process_memoir_segments(self, user_id: str, segment_ids: List[str]):
                             stage_slots=state.slots.get(detected_stage, {}),
                         )
                         response = llm.invoke(prompt)
-                        content = response.content.strip()
-                        parsed = json.loads(content)
+                        parsed = json.loads(extract_json_payload(response.content))
                         detected_stage = parsed.get("detected_stage", detected_stage)
                         extracted_slots = parsed.get("slots", {}) or {}
                     except (json.JSONDecodeError, Exception) as e: