[FEATURE]: Replace tui.diff_style with KV backed storage #132
Description
Feature hasn't been suggested before.
- I have verified this feature I'm about to request hasn't been suggested before.
Describe the enhancement you want to request
When I originally added the tui.diff_style setting a few months back, I was not yet familiar enough with the project to have been aware of the kv.json file. I have by now realized that KV storage would indeed be a more apt way to store the user's preferred diffStyle, since it allows for easier dynamic toggling and a cleaner configuration file.
Verdict: the diff_style property ought be moved to kv.json, and menu items in the command_list provided to toggle its value while Opencode is live.