/**
 * assess — the answer's standing, folded from the committed record.
 *
 * Pattern: one pure Fold over the Trace. It reads COMMITTED state only — the
 *          run's `sharedState` (the snapshot's, or a paused run's checkpoint's)
 *          — and never an event, so the running agent and every later reader
 *          fold the same bytes. No clock, network, model or randomness; the
 *          same inputs give the same bytes; it never writes into the run.
 * Role:    core/ layer, pure. The one owner of the answer's standing: the
 *          `/observe` door publishes it (`assessAnswer`), `Agent.assessment`
 *          reads the last run through it, and the answer account's "How sure"
 *          row renders it (`answer-account/facts/howSure.ts` ·
 *          `readHowSure`).
 * Emits:   N/A.
 *
 * ## The law
 *
 * The standing comes from what the record can check, never from how sure the
 * model sounds — and never "known" from silence. A reason that fires makes it
 * `unknown`; only a TIE check (a passed enforce `.answerValidation()` report for
 * these bytes) SUPPORTS `known`; checks that ran and fired nothing make it
 * `unrefuted` ("consistent with the record"); a record on which nothing could be
 * checked is `not-applicable` ("not assessed"). A membership pass — a value
 * found, a result that came back non-empty — keeps a reason from firing and
 * never supports anything.
 *
 * ## This turn only
 *
 * The turn begins after the last message a person said
 * (`lib/saidByPerson.ts` · `isSaidByPerson`, the one owner of that question): a
 * continued conversation carries earlier turns' results in `history`, and a
 * library frame (a correction, a nudge) is not a person's turn. The fold reads
 * the tool results after that message, every coverage row of the run
 * (`coverageDeclared` is never carried into a next turn), the conflict rows of
 * this turn — one that names one of those calls, or one stamped with this turn
 * whose readings the record does not all place in earlier turns
 * (`conflictOfThisTurn`; the ledger IS carried, so rows about earlier turns'
 * calls are left out), and the
 * answer's own rows (`unsupportedValues`,
 * `stoppedEarly`, `answerValidation`). "Rests on" is every call of the turn: it
 * may over-report, it never hides.
 *
 * ## How the turn ended
 *
 * A turn that ended in a PAUSE has no answer yet: a person's reply is what it
 * waits on. The fold reads that from the committed state every pause leaves —
 * `pausedToolCallId`, written by each pause the dispatch loop raises and
 * cleared by each resume — so a snapshot, a checkpoint and a saved recording
 * all say it, and every pause kind reads `ask`. A turn that ended in an ERROR
 * has no answer either, and no committed row says so in this version: the
 * readers settle that before they fold (`Agent.assessment` returns
 * `undefined`; the answer account says the record shows no answer).
 */
import type { AnswerAssessment, AssessmentDeclarations, AssessmentRecord } from './types.js';
/**
 * Fold one answer's standing from its committed record.
 *
 * The record of a turn that ended in an ANSWER or in a PAUSE (a pause reads
 * `ask`, from the committed state the pause leaves — no checkpoint needed). A
 * turn that ended in an error has no answer, and its committed state does not
 * say so in this version: do not fold it (`agent.assessment()` returns
 * `undefined` for one; the answer account says the record shows no answer).
 *
 * @param record        a recording (`recordRun`), `{ snapshot }`, or a paused
 *                      run's `{ checkpoint }` — its `sharedState` is read when
 *                      no snapshot is given.
 * @param declarations  what the APP declares — any `AnswerAccountDeclarations`
 *                      is accepted as it is: the fold reads only
 *                      `tools[name].rowsAt`, where an object result keeps its
 *                      rows.
 * @throws TypeError only on a caller error (a record that is not an object, a
 *                   malformed `rowsAt`); a record it cannot read yields
 *                   `not-applicable`, never a throw.
 *
 * A REDACTED record (an agent's `redact`): when the fold would read a state key
 * the record keeps out, it gives no verdict — `standing: 'not-assessed'`, with
 * the keys it needed in `keptOut`. A verdict over the placeholder would read a
 * kept-out pause as a pause and a kept-out history as an empty one.
 *
 * @example
 * ```ts
 * import { assessAnswer, recordRun } from 'agentfootprint/observe';
 *
 * const recorder = recordRun(agent);
 * await agent.run({ message: 'Which ports on switch A are down?' });
 * const a = assessAnswer(recorder.toRecording());
 * a.standing; // 'not-sure'
 * a.reasons;  // [{ reason: 'empty-undeclared', layer: 3, witness: [...] }]
 * ```
 */
export declare function assessAnswer(record: AssessmentRecord, declarations?: AssessmentDeclarations): AnswerAssessment;
/**
 * `assessAnswer` over a runner's LIVE snapshot (`Agent.assessment()`): the
 * state is the run's own heap, never served, so a placeholder string in it is
 * a value. The snapshot's `recorders` row says a policy covered the run — true
 * of its commit log, never of its live state — so it is not consulted here.
 *
 * @internal — `Agent · assessment`'s.
 */
export declare function assessLive(snapshot: unknown, declarations?: AssessmentDeclarations): AnswerAssessment;
/**
 * The one fold, over a committed state already in hand. `served`: the state
 * comes from a record served under a redaction policy, so a key holding the
 * placeholder is a value the record keeps out (`keptOutGuard`).
 *
 * @internal — `assessAnswer`'s, and the answer account's, which holds the
 *            state and the marker apart.
 */
export declare function foldState(recorded: Readonly<Record<string, unknown>>, declarations: AssessmentDeclarations | undefined, served: boolean): AnswerAssessment;