Status colours were run through a contrast and colour vision check against the dark surface, and never appear without an icon or a label beside them.

Four roles, no exceptions. Every numeric cell is tabular, so columns of yields line up digit by digit.

One primary action per surface. A disabled action always carries the sentence that explains it.

Severity is never carried by colour alone: shape, icon and wording repeat it.

Permission is a state of the item, not a separate screen: what the user cannot reach renders disabled, never hidden.

One measure per axis. Where a scale is truncated the chart says so, and the dot plot replaces the bar.