/**
 * toolChoice/record — where a classifier's pick and the model's call become record.
 *
 * Pattern: one writer for one committed key (`findings/ledger.ts ·
 *          recordFindings`, `middleware/ledger.ts · recordDecisions`).
 * Role:    core/ layer leaf. Two call sites, one writer: the tools slot
 *          files the `pick` / `pick-error` row before the model call
 *          (`slots/buildToolsSlot.ts · composeStage`), `stages/callLLM.ts`
 *          files the `outcome` row after the reply. Both go through
 *          `recordToolChoice`, so the key is appended one way and the
 *          matching event fires once per row.
 * Emits:   `agentfootprint.tool_choice.picked` / `.failed` / `.outcome` —
 *          identities (tool names), enums, numbers and a boolean. Never the
 *          descriptions the classifier read, never the user's message.
 *
 * ## Append only, a fresh array per write
 *
 * A row is never replaced. Every write assigns `[...prior, row]` so the
 * committed value is a new array (a TypedScope array read is a live proxy
 * view — spread before use). The tools slot runs in an isolated subflow
 * whose `toolChoices` input is a FROZEN mount arg named `priorToolChoices`;
 * it hands the prior rows in explicitly and the mount's outputMapper carries
 * the fresh list back to the parent key. `callLLM` reads the parent key
 * itself and passes nothing.
 */
import type { ToolChoiceEntry, ToolChoiceLedger, ToolChoiceOutcomeRow, ToolChoiceRow } from './types.js';
/** The scope surface this file needs. Structurally a `TypedScope<AgentState>`. */
export interface ToolChoiceScope {
    toolChoices?: ToolChoiceLedger;
    $emit(name: string, payload?: unknown): void;
}
/**
 * Append one row and emit its event. `prior` is the record as the caller's
 * frame holds it — passed by the tools slot (an isolated subflow that reads
 * the parent's rows as a frozen arg), defaulted to `scope.toolChoices` by
 * `callLLM`, which writes on the scope that owns the key.
 */
export declare function recordToolChoice(scope: ToolChoiceScope, row: ToolChoiceEntry, prior?: readonly ToolChoiceEntry[] | undefined): void;
/** The pick or pick-error row filed for `iteration`, or nothing — the call had no pick. */
export declare function pickRowFor(rows: readonly ToolChoiceEntry[] | undefined, iteration: number): ToolChoiceRow | undefined;
/** Whether ANY pick was attempted for `iteration` — a `pick` or a `pick-error` row. */
export declare function pickAttemptedFor(rows: readonly ToolChoiceEntry[] | undefined, iteration: number): boolean;
/**
 * The comparison row for one reply. Pure. `firstAgrees` exists only when
 * both readings do — a pick with a `chosen` and a reply with a call; `miss`
 * only when the call was narrowed and the model named a tool outside what
 * was served (a door is served, so it can never be a miss).
 */
export declare function outcomeRowFor(pick: ToolChoiceRow | undefined, called: readonly string[], iteration: number): ToolChoiceOutcomeRow;