[DX-1518] feat: site-wide dark mode + theme toggle#3466

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dx-1518-sitewide-dark-mode

Commits on Jul 9, 2026

feat(theme): set theme class before paint to prevent FOUC

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feat(theme): add theme context provider

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feat(theme): mount theme provider and add header theme switcher

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fix(theme): dark styling for the legacy Aside admonition

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fix(theme): follow the site theme in the interactive code editor

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fix(theme): dark variants for remaining light-only components

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fix(theme): dark-mode base styles (page canvas + typography)

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fix(theme): dark-mode polish for decorative graphics

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fix(theme): dark theme for the API reference (Redoc)

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refactor(theme): move the theme control to a footer segmented toggle

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