Update requirements.txt

requirements.txt

@@ -1,9 +1,7 @@
 onnxruntime         # ONNX inference engine (CPU)
 numpy               # Array manipulation
 Pillow              # Image I/O
-gradio>=4.0         # Web UI (4.x needed for DownloadButton stability)
-requests            # Google Drive model downloader
-
-# --- Optional: needed only if you integrate SR3 (PyTorch diffusion model) ---
-# torch              # PyTorch inference for SR3
-# torchvision        # Required by SR3 repo
+gradio>=4.0         # Web UI
+huggingface_hub     # Model download + upload
+torch               # Needed on first boot to export SRCNN and HResNet to ONNX
+torchvision         # Required by torch SR model utils