fix: pin gradio version and remove share=False for HF Spaces

Pin gradio==4.44.1 and gradio_client==1.3.0 to avoid TypeError in
json_schema_to_python_type with newer versions. Remove share=False
which causes localhost access error on HF Spaces.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app.py

@@ -640,7 +640,7 @@ if __name__ == "__main__":
     demo.launch(
         server_name="0.0.0.0",
         server_port=7860,
+        show_api=False,
         show_error=True,
-        share=False,
         ssr_mode=False,
     )

requirements.txt

@@ -16,4 +16,6 @@ omegaconf
 huggingface_hub>=0.25.1,<1.0.0
 soxr
 lameenc
+gradio==4.44.1
+gradio_client==1.3.0
 spaces