Google Generative AI: Instructions: Support for Include Files

[annomatik]

(also posted here: https://community.home-assistant.io/t/multiline-instruction-sensor/774525)

Hi! I’m currently playing around with Google Generative AI in assist. I have added a lot of knowledge into the instructions – that works. Things like my preferences, light configurations and other things, quite a lot of text.

Now, I’d like to use that knowledge in multiple personalities. Different Google Generative AIs. I could just copy + paste, but that makes administration difficult. So I thought of putting all the knowledge into a text file and just include that – how do I do that? Apparently, the file sensor, which isn’t visible to the Voice Assistants anyway, only supports one line. The text sensor is limited to 250 characters and just single line. And I don’t know how to do it with a template variable either.

Would it be possible to implement something like {{ include('ai_knowledge_about_home.txt') }}, {{ include('ai_knowledge_about_person_x.txt") }} and {{ include('ai_knowledge_about_topic_z.txt') }} for the "instructions" of the Google Generative AI?