/**
 * Internal branch-runtime state used by MCP bookkeeping.
 *
 * Kept under `internal/runtime` so it stays outside the 2.0 product surface.
 */
import type { RunData, TaskItem } from './schema.js';
export declare function now(): string;
export declare function nextId(arr: any[], prefix: string): string;
export declare function addEvent(data: RunData, type: string, eventData: Record<string, any>): void;
export declare function addTimeline(data: RunData, type: string, title: string, prdPhase?: string): void;
export declare function resolveCurrentTaskId(tasks: TaskItem[]): string | undefined;
export declare function loadConfig(projectRoot: string): Record<string, any>;
export declare function recalcMetrics(data: RunData, projectRoot?: string): void;
export declare function updateRequirement(data: RunData, projectRoot: string): void;
export declare function saveRunData(path: string, data: RunData, projectRoot: string): void;
export declare function normalizeRunData(data: RunData): RunData;
/**
 * Load existing internal branch runtime for current branch/dev.
 * Returns null if not found.
 */
export declare function loadRunJson(projectRoot: string): {
    path: string;
    data: RunData;
} | null;
/**
 * Create initial RunData structure.
 */
export declare function createInitialRunData(branch: string, dev: string, config: Record<string, any>): RunData;
/**
 * Ensure internal branch runtime exists (lazy init).
 * Creates .aida/, config.json, branch runtime, and branch-level files if missing.
 */
export declare function ensureRunJson(projectRoot: string): {
    path: string;
    data: RunData;
};
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