I frequently catch myself in the scenario where I type a long prompt and... then I see that i forgot to add some file to the context!
It would be perfect if the plugin support cutting current prompt text, executing /add command and then pasting prompt again inside aider window, so we could add new files while keeping the prompt.
Not sure how feasible it is to implement on plugin side or is it more to aider itself, but... you've got my idea :)