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fix(desktop): bundle JetBrains Mono for the terminal pane (#44642)

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The terminal listed JetBrains Mono only as a late fallback and shipped no
webfont, so on machines without SF Mono/Menlo xterm measured the grid on the
regular system face while styled SGR spans fell back to a font with different
advances — glyphs squeezed and overlapped.

Bundle the regular/bold/italic woff2 (Apache-2.0, the faces the dashboard
already ships), put the family first in the xterm stack, pin the weights, and
warm every face before mount (fonts.ready only settles already-requested
faces; bold/italic aren't asked for until styled output paints, past atlas
init). Vite emits them as hashed assets under dist/** with base './', so the
fonts ship in the asar and every install path inherits them.
This commit is contained in:
brooklyn! 2026-06-11 23:11:51 -05:00 • committed by GitHub
parent 6db65e687c
commit 6e41ca956b
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5 changed files with 34 additions and 7 deletions
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17
apps/desktop/src/app/right-sidebar/terminal/use-terminal-session.ts
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@ -315,8 +315,11 @@ export function useTerminalSession({ cwd, onAddSelectionToChat }: UseTerminalSes
allowTransparency: true,
convertEol: true,
cursorBlink: true,
fontFamily: "'SF Mono', 'Menlo', 'Cascadia Code', 'JetBrains Mono', monospace",
fontFamily: "'JetBrains Mono', 'Cascadia Code', 'SF Mono', Menlo, Consolas, monospace",
fontSize: 11,
fontWeight: '400',
fontWeightBold: '700',
letterSpacing: 0,
lineHeight: 1.12,
// Full-screen TUIs (hermes --tui, vim) grab the mouse, so a plain drag
// can't select — ⌥-drag (macOS) / Shift-drag (else) forces a native
@ -598,13 +601,13 @@ export function useTerminalSession({ cwd, onAddSelectionToChat }: UseTerminalSes
startSession()
}
const fonts = typeof document !== 'undefined' ? document.fonts : undefined
// fonts.ready settles only already-requested faces; bold/italic aren't asked
// for until styled output paints (past atlas init), so warm them up front.
const warm = document.fonts?.load
? Promise.allSettled(['400', '700', 'italic 400'].map(v => document.fonts.load(`${v} 11px 'JetBrains Mono'`)))
: Promise.resolve()
if (fonts?.ready) {
void fonts.ready.then(mount, mount)
} else {
mount()
}
void warm.then(mount, mount)
return () => {
disposed = true

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apps/desktop/src/fonts/JetBrainsMono-Bold.woff2 Normal file
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apps/desktop/src/fonts/JetBrainsMono-Italic.woff2 Normal file
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apps/desktop/src/fonts/JetBrainsMono-Regular.woff2 Normal file
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24
apps/desktop/src/styles.css
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@ -17,6 +17,30 @@
src: url('../../../node_modules/@nous-research/ui/dist/fonts/Collapse-Bold.woff2') format('woff2');
}
/* JetBrains Mono — bundled terminal font (Apache-2.0) so bold/italic share the
regular face's metrics instead of squeezing against a system fallback. */
@font-face {
font-family: 'JetBrains Mono';
font-style: normal;
font-weight: 400;
font-display: swap;
src: url('./fonts/JetBrainsMono-Regular.woff2') format('woff2');
}
@font-face {
font-family: 'JetBrains Mono';
font-style: normal;
font-weight: 700;
font-display: swap;
src: url('./fonts/JetBrainsMono-Bold.woff2') format('woff2');
}
@font-face {
font-family: 'JetBrains Mono';
font-style: italic;
font-weight: 400;
font-display: swap;
src: url('./fonts/JetBrainsMono-Italic.woff2') format('woff2');
}
@theme inline {
--color-background: var(--dt-background);
--color-foreground: var(--dt-foreground);