/**
 * Phase B — parallel Subagent fan-out knobs + concurrency helper.
 *
 * Concept: docs/architecture/orchestration-roadmap.md §Phase B
 * Naming: docs/naming.md (AGIM_SUBAGENT_PARALLEL*)
 *
 * Defaults (product choice 2026-07-29):
 *   AGIM_SUBAGENT_PARALLEL        ON when unset
 *   AGIM_SUBAGENT_PARALLEL_MAX    3  (in-batch concurrency)
 *   AGIM_NATIVE_CALL_AGENT_MAX_PER_TURN  6  (raised from 3)
 */
export declare const SUBAGENT_PARALLEL_MAX_DEFAULT = 3;
export declare const CALL_AGENT_MAX_PER_TURN_DEFAULT = 6;
/** Hard ceiling on tasks[] length regardless of env (abuse guard). */
export declare const CALL_AGENTS_TASKS_HARD_MAX = 8;
/** Parallel fan-out for mcp__agim__call_agents. Default ON; set 0|off|false|no to serialize. */
export declare function isSubagentParallelEnabled(): boolean;
/** Max concurrent Subagent runs inside one call_agents batch. Default 3. */
export declare function getSubagentParallelMax(): number;
/** Per-turn call_agent + call_agents task budget. Default 3; 0 disables. */
export declare function getCallAgentMaxPerTurn(): number;
/**
 * Run `fn` over items with a fixed worker pool. Order of results matches
 * input order (allSettled-style: one failure does not cancel siblings —
 * callers should catch inside `fn`).
 */
export declare function mapPool<T, R>(items: readonly T[], concurrency: number, fn: (item: T, index: number) => Promise<R>): Promise<R[]>;
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