/**
 * Governance D3 — Conductor-spawn request store (append-only).
 *
 * Records each time h2a emits a conductor-launch-request envelope to a remote
 * agent, so the cap/cooldown guard can suppress duplicate requests within the
 * 30-minute window.
 *
 * File: `<root>/.h2a/governance/conductor-spawns.jsonl`
 * Event shape: `{ workspaceId: string, at: string, to?: string }`
 *
 * API mirrors claims.ts — append-only, no deletion, no enforcement.
 */
export interface SpawnRequestEvent {
    readonly workspaceId: string;
    /** ISO 8601 timestamp when the request was emitted. */
    readonly at: string;
    /** The remote instance that received the request, if known. */
    readonly to?: string;
}
/**
 * Append a conductor-spawn request event to the JSONL store.
 * Creates the governance directory if it does not exist.
 */
export declare function recordSpawnRequest(root: string, event: SpawnRequestEvent): void;
/**
 * Return the `at` timestamp of the most recent spawn request for a workspace,
 * or `undefined` if none has been recorded.
 *
 * Uses canonical comparison so the workspace id is case-fold and slug-stable.
 */
export declare function lastSpawnRequestAt(root: string, workspaceId: string): string | undefined;
export interface SpawnAllowedOpts {
    /** ISO 8601 timestamp of the last recorded spawn request, or undefined. */
    readonly lastSpawnAt?: string;
    /** Reference instant in ms (Date.now()). */
    readonly now: number;
    /** Cooldown window in ms (default 1 800 000 = 30 min). */
    readonly cooldownMs?: number;
}
/**
 * Pure helper: return true iff emitting a new spawn request is allowed.
 *
 * Rules:
 * - No previous request → always allowed.
 * - Previous request exists → allowed only if `now - Date.parse(lastSpawnAt) >= cooldownMs`.
 *
 * Default cooldown is 30 minutes (1 800 000 ms).
 */
export declare function spawnAllowed(opts: SpawnAllowedOpts): boolean;
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