Feature Summary

Emdash allows the user to set the font family and size for terminal views. Use the same pattern to allow the user to set for text file preview views.

Problem or Use Case

Emdash embeds the Monaco editor for viewing text files. This editor is displayed when the user wants to see diffs in changes made by agents. It currently defaults to a font stack that is not aligned with the defaults typically expected on current operating systems, defaulting to Menlo on macOS (see related issue #2807). Most importantly, there is no simple way to adjust the font family or size for this view.

While Monaco allows the user to adjust the font size through a command invoked via its command palette (if the user is aware this ability exists), it does not persist across application restarts and there is no support at all for changing the font family.

Proposed Solution

Use the existing pattern for configuring terminal font family and size for the text file viewer.

Alternatives Considered

No response

Additional Context

No response