For a typical Ubuntu user a local install of Ollama is as likely to be snap rather than apt or "curl url | bash" remote shell injection install method.
The docs at https://docs.msty.app/getting-started/onboarding provide a tab-based view for those new Msty users who likely already have Ollama installed. The options are: get started using Ollama (presumably set it up again) or use Ollama remotely or ... if Ollama was installed in user space, then they'll have and msty will detect a ~/.ollama/models directory. However, "ollama serve" served models will be in /var/snap/ollama/common/models or something like that.
Recommend updating the docs for the Ubuntu-snap-ollama crowd, as it's a major part of your demographic. I haven't even used your software yet, so I'm not sure I know what is best here, tell them to use snap installed Ollama as remote via http://127.0.0.1:11434, create a ~/.ollama/models and copy or ln (and fight with permissions, snap-installed Ollama is root:root) or copy the models aside from snap, uninstall snap Ollama and install it a different way.
If I had an opinion, I'd write it up, but let me get some experience with Msty before I start having opinions.