chore: move llm init to generate prompt step

src/agent/image_agent.py

@@ -66,9 +66,6 @@ class ChangeScene(BaseModel):
     )
     scene_description: Optional[str] = None
 
-
-image_prompt_generator_llm = create_light_llm(0.1).with_structured_output(ChangeScene)
-
 async def generate_image_prompt(user_hash: str, scene_description: str, last_choice = "No choice yet") -> ChangeScene:
     """
     Generates a detailed image prompt string based on a scene description.
@@ -86,6 +83,8 @@ async def generate_image_prompt(user_hash: str, scene_description: str, last_cho
         last_choice=last_choice,
         scene_description=scene_description
     )
+    
+    image_prompt_generator_llm = create_light_llm(0.1).with_structured_output(ChangeScene)
 
     response = await with_retries(lambda: image_prompt_generator_llm.ainvoke(
         [

src/agent/music_agent.py

@@ -38,9 +38,6 @@ class MusicPrompt(BaseModel):
     prompt: str
 
 
-llm = create_light_llm(0.1).with_structured_output(MusicPrompt)
-
-
 async def generate_music_prompt(user_hash: str, scene_description: str, last_choice = "No choice yet") -> str:
     logger.info(f"Generating music prompt for the current scene: {scene_description}")
 
@@ -55,6 +52,8 @@ async def generate_music_prompt(user_hash: str, scene_description: str, last_cho
         scene_description=scene_description
     )
     
+    llm = create_light_llm(0.1).with_structured_output(MusicPrompt)
+    
     response = await with_retries(lambda: llm.ainvoke(
         [SystemMessage(content=system_prompt), HumanMessage(content=scene)]
     ))