@sogoiii contributed PR #63 to add custom system prompt management, which you can use with the subcommand uvx gac prompt set --edit or uvx gac prompt set --file <filepath>. You can also show/clear the custom system prompt with uvx gac prompt show and uvx gac prompt clear, respectively.
Thank you @sogoiii!
Full Changelog: v3.10.15...v3.11.0
Contributors
sogoiii