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Lambda 621eda667a fix(typography): load real Inter italic on web and desktop (MUL-5449)
Neither platform loaded an Inter italic face: next/font defaults to
`style: ["normal"]`, and desktop imported `@fontsource-variable/inter`
without `wght-italic.css`. Every `italic` in the product was therefore
browser-synthesized oblique — the ~20 semantic UI labels (chat empty
states, model-picker's "Managed by runtime", dashboard/squad
placeholders) plus all markdown <em> and blockquotes, which are user
content.

Load the real face on both, mirroring how Source Serif 4 is already
wired.

Also set `font-synthesis: style` on html, which forbids weight synthesis
while leaving style synthesis on. Weight synthesis is pure loss now that
every loaded face has real weights, and it is actively harmful on the CJK
tail of --font-sans: `font-bold` against PingFang SC (which stops at
Semibold) makes Chromium smear a fake 700 that closes up the counters of
dense Han glyphs.

Style synthesis stays on deliberately. `auto` only synthesizes when no
real italic matches, so the newly loaded Inter Italic already wins for
Latin. The only stacks still synthesizing are the two that ship no italic
at all — CJK fallbacks and Geist Mono — where `font-style: italic` has no
other visual carrier; a blanket `font-synthesis: none` would silently
flatten every Chinese <em>, every editor italic mark and every hljs
comment to upright.

Co-authored-by: multica-agent <github@multica.ai>
2026-07-29 15:55:55 +08:00
..
2026-07-14 09:11:21 +08:00