build: use compatible Gradio and CPU-only Torch

Upgrade the Space SDK to Gradio 5.50.0 so Video schemas work with the public API. Pin matching CPU-only Torch/Torchaudio wheels and remove unused direct dependencies to avoid CUDA downloads on cpu-basic.

README.md

@@ -4,7 +4,7 @@ emoji: ✂️
 colorFrom: red
 colorTo: yellow
 sdk: gradio
-sdk_version: 5.9.1
+sdk_version: 5.50.0
 app_file: app.py
 pinned: true
 license: mit

requirements.txt

@@ -1,10 +1,8 @@
-torch
-torchaudio
-funasr>=1.2.0
-modelscope
-huggingface_hub
-moviepy
-gradio
+--extra-index-url https://download.pytorch.org/whl/cpu
+
+torch==2.11.0+cpu
+torchaudio==2.11.0+cpu
+funasr==1.3.14
+huggingface_hub>=0.33.5,<2.0
+gradio==5.50.0
 numpy<2.0
-librosa
-soundfile