Fix pathlib bug

mm_story_agent/__init__.py

@@ -35,20 +35,24 @@ class MMStoryAgent:
         return pages
     
     def generate_speech(self, config, pages):
+        story_dir = Path(config["story_dir"])
         speech_agent = CosyVoiceAgent(config["speech_generation"])
-        speech_agent.call(pages, config["story_dir"] / "speech")
+        speech_agent.call(pages, story_dir / "speech")
     
     def generate_sound(self, config, pages):
+        story_dir = Path(config["story_dir"])
         sound_agent = AudioLDM2Agent(config["sound_generation"])
-        sound_agent.call(pages, config["story_dir"] / "sound")
+        sound_agent.call(pages, story_dir / "sound")
 
     def generate_music(self, config, pages):
+        story_dir = Path(config["story_dir"])
         music_agent = MusicGenAgent(config["music_generation"])
-        music_agent.call(pages, config["story_dir"] / "music")
+        music_agent.call(pages, story_dir / "music")
     
     def generate_image(self, config, pages):
+        story_dir = Path(config["story_dir"])
         image_agent = StoryDiffusionAgent(config["image_generation"])
-        image_agent.call(pages, config["story_dir"] / "image")
+        image_agent.call(pages, story_dir / "image")
     
     def generate_modality_assets(self, config, pages):
         script_data = {"pages": [{"story": page} for page in pages]}