feat: create vae loader

src/ui/__init__.py

@@ -1,3 +1,4 @@
+from .autoencoder_handler import AutoencoderHandler
 from .pipeline_handler import PipelineHandler
 
-__all__ = ["PipelineHandler"]
+__all__ = ["PipelineHandler", "AutoencoderHandler"]

src/ui/autoencoder_handler.py

@@ -0,0 +1,17 @@
+import os
+
+import folder_paths  # pyright: ignore[reportMissingImports]
+
+from ..domain.model import AutoencoderModel
+from ..service.create_autoencoder_service import CreateAutoencoderService
+
+
+class AutoencoderHandler:
+    def __init__(self, create_autoencoder_service: CreateAutoencoderService) -> None:
+        self.create_autoencoder_service = create_autoencoder_service
+
+    def create(self, checkpoint_name: str) -> AutoencoderModel:
+        checkpoint_path = folder_paths.get_full_path("vae", checkpoint_name)
+        if not os.path.exists(checkpoint_path):
+            raise FileNotFoundError(f"VAE file not found: {checkpoint_name}")
+        return self.create_autoencoder_service.create_from_checkpoint(checkpoint_path)