agentfootprint/dist/esm/semantics/coverage/composedCoverage.js

The explainable agent framework — backtrack a wrong answer to the exact context that caused it (evidence, not guesses). Built on footprintjs.

/**
 * composedCoverage — the coverage row the LIBRARY composes for one call of a
 * tool that declares its search (`Tool.search`).
 *
 * Pattern: one row type, read by the claim checker. Pure data; TYPE-only
 *          imports, and one type guard.
 * Role:    the contract between the dispatch funnel that writes the row
 *          (`../../core/agent/stages/toolCalls.ts` · `declareCoverage`, via
 *          `search/compose.ts`) and every reader that judges a "not found",
 *          "none" or "the full list" against it.
 * Emits:   N/A.
 *
 * ## Why the library writes it, not the tool
 *
 * A tool author's prose about what a search covered is unreliable: a
 * registered study found that a note overstating what was checked made the
 * model's replies WORSE. So the tool declares, once and as typed data, what a
 * search is made of, and the library composes each call's row from the
 * arguments the call actually ran with. Composition can only under-claim,
 * relative to a TRUE declaration (one that misdescribes its query is the
 * trusted base, said out loud): a
 * facet enters `checked` from a value the call sent, a declared default composed
 * as if sent, a declared fixed qualifier, the declared (or sent) source or a
 * host-filled identity key — and every classified argument none of those
 * covers is a bearing gap. The subject is an item too (`facet: 'subject'`):
 * the statement a checker writes from the row alone names it.
 *
 * ## The fields, as revision 5 of the design names them (§ 3.2)
 *
 * The row is a {@link DeclaredCoverage} — the same row `coverageDeclared`
 * holds for every tool — with these fields more: `composed`, `resultId`, typed
 * `checked` items, `complete` and `gaps` (and `overclaim`, written by the
 * dispatch-time overclaim check of a later release). Its `notChecked` and `cannotCover`
 * lists stay the plain-prose view every older reader (the limits block, the
 * answer account) already prints: the gaps' `what` / `why`, with no facet.
 */
/** Whether a `coverageDeclared` row was composed by the library from a `search`. */
export function isComposedCoverage(row) {
    const r = row;
    return (r.composed === 'local' || r.composed === 'remote') && Array.isArray(r.gaps);
}
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