How to use external apps in LibreOffice Extensions?

I trying to install localwriter to use DeepSeek A in Libreoffice but not sure how to connect Libreoffice localwriter extension with Alpaca AI (there I have installed DeepSeek), both with flatpak versions.

Any help?

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GitHub - balisujohn/localwriter: A LibreOffice Writer extension that adds local-inference generative AI features. /issues