/**
 * Scheduler Foundation — deterministic policy (2.12.0).
 *
 * Pure, side-effect-free executor selection. There is no scoring, ranking, or
 * random tie-breaking: candidates are total-ordered by `executorId`, and intents
 * are total-ordered by `priority` (descending), then `enqueuedAtMs` (FIFO), then
 * `intentId`. Identical scheduler state always yields an identical decision.
 */
import type { AssignabilityResult } from "../assignment/assignment-types.js";
import type { ExecutorLivenessStatus } from "../executor-registry/executor-registry-types.js";
import type { SchedulingIntentRecord, SchedulingPolicyMode } from "./scheduler-types.js";
/** One executor considered for a single intent, with its liveness observation. */
export interface ExecutorCandidate {
    executorId: string;
    status: ExecutorLivenessStatus;
    assignability: AssignabilityResult;
    /** Number of current (designation) assignments already held by this executor. */
    currentAssignmentCount: number;
}
/** Deterministic intent processing order. */
export declare function orderPendingIntents(records: readonly SchedulingIntentRecord[]): SchedulingIntentRecord[];
/** Deterministic candidate ordering: ascending executorId. */
export declare function sortExecutorCandidates(candidates: readonly ExecutorCandidate[]): ExecutorCandidate[];
/**
 * Choose one executor deterministically.
 *
 * - `first-fit`: the first assignable executor by ascending executorId.
 * - `least-assigned`: the assignable executor with the fewest current
 *   assignments, tie-broken by ascending executorId.
 */
export declare function chooseExecutor(candidates: readonly ExecutorCandidate[], mode: SchedulingPolicyMode): ExecutorCandidate | undefined;
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