/**
 * In-memory store for tracking investigation progress
 * Shared across all tools - no worker threads needed!
 */
export interface InvestigationProgress {
    session_uuid: string;
    prompt_cycle_id?: string;
    status: 'in_progress' | 'completed' | 'failed' | 'unknown';
    progress_percentage?: number;
    current_step?: string;
    current_step_id?: string;
    steps_completed: Array<{
        step_id?: string;
        step_number: number;
        description: string;
        explanation?: string;
        category: string;
        status: string;
        sources_consulted: string[];
        timestamp: string;
    }>;
    sources_discovered: string[];
    created_at: string;
    last_updated: string;
    streaming_active: boolean;
}
declare class InvestigationProgressStore {
    private store;
    /**
     * Initialize a new investigation session
     */
    initSession(sessionUuid: string, promptCycleId?: string): void;
    /**
     * Update progress for a session
     */
    updateProgress(sessionUuid: string, updates: Partial<Omit<InvestigationProgress, 'session_uuid' | 'created_at'>>): void;
    /**
     * Add a completed step
     */
    addStep(sessionUuid: string, step: Omit<InvestigationProgress['steps_completed'][0], 'timestamp'>): void;
    /**
     * Add discovered sources (deduplicates automatically)
     */
    addSources(sessionUuid: string, sources: string[]): void;
    /**
     * Update or add a step by ID (for chain of thought updates)
     */
    updateStepById(sessionUuid: string, stepId: string, updates: Partial<Omit<InvestigationProgress['steps_completed'][0], 'step_id' | 'timestamp'>>): void;
    /**
     * Get progress for a session
     */
    getProgress(sessionUuid: string): InvestigationProgress | undefined;
    /**
     * Check if we're actively streaming for this session
     */
    isStreaming(sessionUuid: string): boolean;
    /**
     * Mark streaming as active/inactive
     */
    setStreaming(sessionUuid: string, active: boolean): void;
    /**
     * Mark session as complete
     */
    completeSession(sessionUuid: string): void;
    /**
     * Clean up old sessions (older than 1 hour)
     */
    cleanup(): void;
    /**
     * Get all active sessions (for debugging)
     */
    getActiveSessions(): string[];
    /**
     * Clear all (for testing)
     */
    clear(): void;
}
export declare const investigationProgressStore: InvestigationProgressStore;
export {};