/**
 * marker — the one positive sign that a snapshot was SERVED under a redaction
 * policy, carried by the snapshot itself.
 *
 * Pattern: a recorder with no data but a snapshot bundle, attached to a run's
 *          executor only when a policy covers the run
 *          (`runRedaction.ts` · `applyTo`).
 * Role:    the Lens half's guard. A reader of a record (the answer account,
 *          `assessAnswer`, the served views) reads footprintjs's placeholder
 *          as a value KEPT OUT only when the record says a policy covered the
 *          run. Without that sign a tool that really returned the string
 *          `'REDACTED'` would read as kept out — and an unredacted run's
 *          account would change. With no policy nothing is attached, and the
 *          snapshot is byte-identical to before.
 *
 * The bundle names no policy and no key: it says a policy was in force, which
 * is a fact about the record, not about the run's values.
 *
 * The row is a recorder's, so the run's LIVE snapshot carries it too — true of
 * its commit log (footprintjs scrubs it as it is written), never of its live
 * state. The library's live readers fold that state as values and do not
 * consult the row (`Agent · assessment` → `assess.ts` · `assessLive`).
 */
import type { CombinedRecorder } from 'footprintjs';
/** The id the marker's bundle carries in `snapshot.recorders`. */
export declare const REDACTION_MARKER_ID = "agentfootprint.redaction";
/** Whether `value` is one of footprintjs's redaction placeholders. */
export declare function isPlaceholder(value: unknown): boolean;
/**
 * The marker for a run's executor. It contributes one row to the served
 * snapshot's `recorders`, and tells the run when it has SETTLED — finished,
 * failed or paused (`onSettled`) — so the run's serving can let go of what
 * only the live run needed (`runRedaction.ts` · `retiredRule`).
 */
export declare function redactionMarker(onSettled?: () => void): CombinedRecorder;
/**
 * Whether `snapshot` (a served snapshot, or a recording's) carries the marker —
 * the record was served under a redaction policy, so a placeholder in it is a
 * value the policy kept out.
 */
export declare function servedUnderPolicy(snapshot: unknown): boolean;