TUI-specific configuration written to $XDG_CONFIG_HOME/opencode/tui.json.
This includes theme, keybinds, scroll settings, and other TUI-only options.
See https://opencode.ai/docs/tui#configure for the documentation.
Note that "$schema": "https://opencode.ai/tui.json" is automatically added.
Since OpenCode v1.2.15, TUI settings must be in a separate tui.json file.
Settings like theme, keybinds, and tui in programs.opencode.settings
are deprecated and should be moved here.