import type { WorkingMemorySnapshot } from '@principles/core/prompt-builder';
export { extractVersion, extractDate, extractSummary, parseWorkingMemorySection, workingMemoryToInjection, extractMilestones, validateCurrentFocus, mergeWorkingMemory, compressFocusContent, } from '@principles/core/prompt-builder';
export type { FileArtifact, WorkingMemorySnapshot, } from '@principles/core/prompt-builder';
interface CompressionConfig {
    lineThreshold: number;
    sizeThreshold: number;
    intervalMs: number;
    keepCompletedTasks: number;
    maxWorkingMemoryArtifacts: number;
}
export declare function getHistoryDir(focusPath: string): string;
export declare function backupToHistory(focusPath: string, content: string): string | null;
export declare function cleanupHistory(focusPath: string, maxFiles?: number): void;
export declare function getHistoryVersions(focusPath: string, count?: number): Promise<string[]>;
export declare function compressFocus(focusPath: string, newContent: string): {
    backupPath: string | null;
    cleanedCount: number;
};
export declare function extractWorkingMemory(messages: {
    role?: string;
    content?: string | unknown[];
}[], workspaceDir?: string): WorkingMemorySnapshot;
export declare function cleanupStaleInfo(content: string, workspaceDir?: string, config?: CompressionConfig): string;
export declare function autoCompressFocus(focusPath: string, workspaceDir?: string, stateDir?: string): {
    compressed: boolean;
    oldLines: number;
    newLines: number;
    milestonesArchived: boolean;
    backupPath: string | null;
    reason: string;
    newContent?: string;
};
export declare function needsAutoCompression(focusPath: string, stateDir?: string): boolean;
export declare function archiveMilestonesToDaily(workspaceDir: string, milestones: {
    completedTasks: string[];
    fileArtifacts: string[];
}, version: string): string | null;
export declare function recoverFromTemplate(focusPath: string, extensionRoot: string): {
    success: boolean;
    error?: string;
    templatePath?: string;
};
export declare function safeReadCurrentFocus(focusPath: string, extensionRoot: string, logger?: {
    warn?: (msg: string) => void;
    info?: (msg: string) => void;
}): {
    content: string;
    recovered: boolean;
    validationErrors: string[];
};