[diffusion] feat: support LoRA (#13859)

python/sglang/multimodal_gen/runtime/server_args.py

@@ -621,6 +621,19 @@ class ServerArgs:
             default=ServerArgs.override_transformer_cls_name,
             help="Override transformer cls name",
         )
+        # LoRA
+        parser.add_argument(
+            "--lora-path",
+            type=str,
+            default=ServerArgs.lora_path,
+            help="The path to the LoRA adapter weights (can be local file path or HF hub id) to launch with",
+        )
+        parser.add_argument(
+            "--lora-nickname",
+            type=str,
+            default=ServerArgs.lora_nickname,
+            help="The nickname for the LoRA adapter to launch with",
+        )
         # Add pipeline configuration arguments
         PipelineConfig.add_cli_args(parser)