feat: read YouTube cookies path from YOUTUBE_COOKIES_PATH environment variable

utils/youtube_tool.py

@@ -21,9 +21,11 @@ from .state_manager import get_agent_state
 
 class YouTubeTool:
     def __init__(self):
-        # Path to cookies file in project root
-        self.cookies_path = os.path.join(os.path.dirname(os.path.dirname(__file__)), "cookies.txt")
-        print("🎬 YouTube Tool with cookies support initialized")
+        # Lấy path cookie từ biến môi trường
+        self.cookies_path = os.environ.get("YOUTUBE_COOKIES_PATH")
+        if not self.cookies_path:
+            raise ValueError("YOUTUBE_COOKIES_PATH environment variable is not set. Please set it to the path of your cookies.txt file.")
+        print(f"🎬 YouTube Tool with cookies support initialized. Cookie path: {self.cookies_path}")
     
     def process_youtube(self, youtube_input: str, **kwargs) -> Dict[str, Any]:
         """