[tracking] add swanlab_logdir param (#7219)

* feat: add swanlab_logdir param

* fix

Former-commit-id: 9215ad488b6ac6cd57fe8fa4acdacceb63f68ca5

src/llamafactory/hparams/finetuning_args.py

@@ -363,15 +363,15 @@ class SwanLabArguments:
         default=False,
         metadata={"help": "Whether or not to use the SwanLab (an experiment tracking and visualization tool)."},
     )
-    swanlab_project: str = field(
+    swanlab_project: Optional[str] = field(
         default="llamafactory",
         metadata={"help": "The project name in SwanLab."},
     )
-    swanlab_workspace: str = field(
+    swanlab_workspace: Optional[str] = field(
         default=None,
         metadata={"help": "The workspace name in SwanLab."},
     )
-    swanlab_run_name: str = field(
+    swanlab_run_name: Optional[str] = field(
         default=None,
         metadata={"help": "The experiment name in SwanLab."},
     )
@@ -379,10 +379,14 @@ class SwanLabArguments:
         default="cloud",
         metadata={"help": "The mode of SwanLab."},
     )
-    swanlab_api_key: str = field(
+    swanlab_api_key: Optional[str] = field(
         default=None,
         metadata={"help": "The API key for SwanLab."},
     )
+    swanlab_logdir: Optional[str] = field(
+        default=None,
+        metadata={"help": "The log directory for SwanLab."},
+    )
 
 
 @dataclass