Upgrade all dependencies, migrate from pnpm to bun, update tsconfig#163

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yusing wants to merge 3 commits intojsonnext:mainfrom

Commits on Nov 17, 2025

Upgrade all dependencies, migrate from pnpm to bun, update tsconfig
yusing
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Fix code introduced after dependencies upgrade, passes all tests
yusing
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Commits on Nov 18, 2025

Add missing dependencies: @shikijs/langs and @shikijs/themes
yusing
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