[WIP] Add active SSH key display in settings

[Codex]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

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This section details on the original issue you should resolve

<issue_title>[Feature] Show active SSH key in settings</issue_title>
<issue_description>Small request, specially for Docker deployment, but perhaps we can show active SSH key (public) in UI or settings so its easier to copy-paste it for Github/Repo access.
Right now deploying in docker, its a little roundabout process to either clone Repo manually for local access, or copy the SSH key from docker-container to save it in Github Repo so Routa is able to clone the git repo.</issue_description>

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