feat(web): fold typography overrides behind an Advanced switch

The section defaults to two rows - one sans, one monospace - with the
demos showing every surface each choice reaches. An Advanced switch in
the section header reveals the per-surface rows (prompt, terminal,
anti-aliasing); the state persists locally, and a settings-search jump
to a hidden row flips the switch for the session so the target exists.
The cascade behind the simple view is real: the terminal now inherits
the monospace preference unless overridden.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
8e13a97baaJulius Marminge committed on 8/4/2026, 5:46:27 PMparentc1ef13d
4 files changedLine totals unavailable