Design-system consistency

The drift lens on the rendered surface: does what shipped obey this system. Drift is a relation, so it needs both things on disk — the render, and the system it should match. Without the second there is no drift, only preference, and saying so is the finding.

When to use

• Judging a rendered surface against the project's tokens, scales and declared stance.
• A PR adds or restyles UI in a codebase that already has a token layer.
• Auditing a surface that "looks right" for values that bypass the system.

When NOT to use