/**
 * Project Knowledge Layer
 *
 * Loads project-specific knowledge overrides from ./bckb-overrides/ directory.
 * This is the highest priority layer that can override any embedded knowledge.
 */
import { LayerLoadResult } from '../types/layer-types.js';
import { BaseKnowledgeLayer } from './base-layer.js';
export declare class ProjectKnowledgeLayer extends BaseKnowledgeLayer {
    private readonly projectPath;
    constructor(projectPath?: string);
    /**
     * Initialize the project layer by checking for and loading overrides
     */
    initialize(): Promise<LayerLoadResult>;
    /**
     * Check if the project overrides directory exists
     */
    private checkProjectDirectoryExists;
    /**
     * Load override topics from project directory
     */
    protected loadTopics(): Promise<number>;
    /**
     * Load project-specific indexes (if any)
     */
    protected loadIndexes(): Promise<number>;
    /**
     * Load a single override topic from a markdown file
     */
    private loadAtomicTopic;
    /**
     * Check if this layer can provide overrides for a specific topic
     */
    canOverride(topicId: string): boolean;
    /**
     * Get the override configuration for this layer
     */
    getOverrideConfig(): {
        [topicId: string]: {
            strategy: string;
            source: string;
        };
    };
    /**
     * Create a sample project override structure
     */
    static generateSampleStructure(): string;
}
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