/**
 * Parallel Branch handling — manages the Test Case Authoring ∥ Contract
 * parallel fork after Spec Review Gate passes (ADR-004).
 *
 * Rules:
 *  - spec-review-gate passed → activate both 'contract' and 'test-case-authoring'
 *  - contract-review-gate only waits for 'contract' (not test-case-authoring)
 *  - 'implement' requires BOTH contract-review-gate passed AND test-case-authoring passed
 *    (if test-case-authoring not passed yet → implement stays blocked)
 *  - smoke-test passed → activate both 'ux-acceptance' and 'pm-commercial-review'
 *  - 'regression' requires BOTH ux-acceptance AND pm-commercial-review passed (parallel join)
 */
import type { StageId, PipelineState } from '../types/index.js';
import { PARALLEL_FORK_AFTER_SPEC_REVIEW } from '../constants.js';
export { PARALLEL_FORK_AFTER_SPEC_REVIEW };
/** For a given stage, return prerequisite stages that must be 'passed' before it can activate. */
export declare function getPrerequisites(stageId: StageId, requiredStages: StageId[]): StageId[];
/** Check whether all prerequisites for a stage are satisfied (status === 'passed'). */
export declare function arePrerequisitesMet(stageId: StageId, state: PipelineState): boolean;
/**
 * Determine which pending stages should be activated next given current state.
 * Returns stage IDs that are pending and have all prerequisites met.
 */
export declare function getActivatableStages(state: PipelineState): StageId[];
/**
 * Determine if 'implement' should be blocked because test-case-authoring
 * is still in progress (ADR-004 blocking rule).
 */
export declare function shouldBlockImplement(state: PipelineState): boolean;
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