Fix HF Spaces runtime error

- Set gradio demo.launch to share=True with queue and server_name/port
- Pin gradio to 4.29.0 to avoid json_schema bool error

app.py

@@ -708,7 +708,12 @@ with gr.Blocks(title="Receipt Processing Agent", theme=gr.themes.Soft(), css=CUS
     """)
 
 
-# Launch
+# Launch (Spaces needs share=True when localhost is blocked)
 if __name__ == "__main__":
-    demo.launch()
+    demo.queue(max_size=8).launch(
+        share=True,
+        server_name="0.0.0.0",
+        server_port=7860,
+        show_error=True,
+    )
 

requirements.txt

@@ -2,7 +2,8 @@ torch>=2.0.0
 torchvision>=0.15.0
 transformers>=4.30.0
 easyocr>=1.7.0
-gradio>=4.0.0
+# Pin gradio to a stable version to avoid json_schema issues in Spaces
+gradio==4.29.0
 Pillow>=9.0.0
 numpy>=1.21.0
 scikit-learn>=1.0.0