css-token-sweep
Find every var(--name) in a project where --name is not defined in any :root { ... } block. Surface tokens defined in default :root but quietly inherited (not overridden) by theme variants. Optionally flag hardcoded colors that duplicate an existing token's value.
This is the missing lint pass that most design-system codebases never add. Without it, a typo like var(--ink-2) instead of var(--ink-soft) renders text in the unset color (often invisible against a white
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