Found the actual root cause of "fonts still wrong" by reading
gpui-component source. Input, tooltip, context menu, search popover,
notification, and inspector all set `font_family(cx.theme().font_family)`
on their root div directly — they don't inherit from the parent's
text style. Default theme value is `.SystemUIFont` (SF Pro on macOS),
so the omnibar Input the user actually types into was rendering in
SF Pro while every chrome surface around it rendered Geist.
After fonts register, mutate the theme global so its `font_family`
is `"Geist"`. Now every gpui-component sub-element uses the same
sans as the rest of the app.
cargo test --workspace: 440 passed, 0 failed.
ZacharyZhang-NY
a0ac0de765