Type Alias: ToolResultColumns

ToolResultColumns = Readonly<Record<string, ColumnType | ColumnDeclaration>>

Defined in: src/integrity/column-types/types.ts:97

What a tool declares about the columns of its rowset — column name to type.

OPEN, NEVER CLOSED. A declaration is a promise about what it NAMES, not a schema of everything the result may contain: a column nobody listed is allowed and is never judged. Two reasons, and both are the same reason.

• A closed schema punishes the wrong party. The day the backend adds a column, every one of these tools starts filing findings about a change that broke nothing — and a check that cries about correct behaviour is a check people switch off, which is how the failure it exists to catch gets back in. • It is the rule the neighbouring boundary already keeps. toolArgsValidation is permissive on keywords it does not know and enforces additionalProperties: false only when an author explicitly asks for it. Two validators at one seam disagreeing about whether silence means "allowed" would be a worse defect than either could catch.