We are now using the lefthand vertical strip for the settings menu button. This is a good place for the status indicator.
Really, we only need to display something *if there is a problem*. If the app is processing, the progress bar indicates that.
For the case where the panels are collapsed, I'll add the floating buttons back in some form, and we'll indicate via those if the app is processing something.
- Prompt must have an open curly brace followed by a close curly brace to enable dynamic prompts processing
- If a the given prompt already had a dynamic prompt cached, do not re-process
- If processing is not needed, user may invoke immediately
- Invoke button shows loading state when dynamic prompts are processing, tooltip says generating
- Dynamic prompts preview icon in prompt box shows loading state when processing, tooltip says generating
