Fix: Revert share=True to share=False

Accidentally changed share=False to share=True in the gallery
refactoring commit. Reverting to share=False as it should be.

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app.py

@@ -3942,6 +3942,6 @@ if __name__ == "__main__" and not os.environ.get("QR_TESTING_MODE"):
 
             # ARTISTIC QR TAB
     app.queue()  # Required for gr.Progress() to work!
-    app.launch(share=True, mcp_server=True)
+    app.launch(share=False, mcp_server=True)
     # Note: Automatic file cleanup via delete_cache not available in Gradio 5.49.1
     # Files will be cleaned up when the server is restarted