Move css_paths to launch() and drop dead #duplicate-button CSS

Move css_paths from ChatInterface to launch() for Gradio 6

Flatten Gradio 6 message content for chat template

Drop gr.ChatInterface(type=) for Gradio 6

Upgrade deps and migrate to Gradio 6

Update .pre-commit-config.yaml

Update ruff config

Remove .vscode

Update

Add files

initial commit