Add export buttons for batch results in the file upload interface

src/interface/file_upload_interface.py

@@ -816,6 +816,25 @@ def create_file_upload_interface() -> gr.Blocks:
 
                 # Visual progress bar (updates during batch classification)
                 batch_progress_bar = gr.Progress()
+
+                # Export results (visible after batch completes)
+                gr.Markdown("### 💾 Download Results")
+                with gr.Row():
+                    export_csv_btn = gr.DownloadButton(
+                        label="Download CSV",
+                        variant="secondary",
+                        visible=False,
+                    )
+                    export_json_btn = gr.DownloadButton(
+                        label="Download JSON",
+                        variant="secondary",
+                        visible=False,
+                    )
+                    export_xlsx_btn = gr.DownloadButton(
+                        label="Download XLSX",
+                        variant="secondary",
+                        visible=False,
+                    )
         
         # Message processing section (initially hidden)
         message_processing_section = gr.Row(visible=False)
@@ -890,24 +909,8 @@ def create_file_upload_interface() -> gr.Blocks:
                     label="Statistics"
                 )
                 
-                # Export options
                 gr.Markdown("### 💾 Export Results")
-                with gr.Column():
-                    export_csv_btn = gr.DownloadButton(
-                        label="Download CSV",
-                        variant="secondary",
-                        visible=False,
-                    )
-                    export_json_btn = gr.DownloadButton(
-                        label="Download JSON",
-                        variant="secondary",
-                        visible=False,
-                    )
-                    export_xlsx_btn = gr.DownloadButton(
-                        label="Download XLSX",
-                        variant="secondary",
-                        visible=False,
-                    )
+                gr.Markdown("Download buttons appear in the 'Batch Processing' section after completion.")
         
         # Status messages
         status_message = gr.Markdown("", visible=True)