Interface KnowledgeDocument

interface KnowledgeDocument {
    id: string;
    title: string;
    content: string;
    source: string;
    format: "text" | "json" | "markdown" | "pdf" | "html";
    metadata: {
        tags: string[];
        category?: string;
        author?: string;
        version: number;
        createdAt: Date;
        updatedAt: Date;
        size: number;
    };
    chunks: DocumentChunk[];
    embeddings: number[][];
    isIndexed: boolean;
    lastIndexed?: Date;
}