export declare const PROJECT_CONTEXT_SCHEMA_VERSION = 1;
export declare const MAX_CONTEXT_RECORDS = 10000;
export declare const MAX_CONTEXT_TEXT_LENGTH = 20000;
export type ProjectContextKind = "project" | "sequence" | "source" | "timeline" | "transcript" | "shot" | "audio" | "note";
export interface ProjectContextRecord {
    id: string;
    kind: ProjectContextKind;
    name: string;
    text: string;
    keywords: string[];
    sequenceId?: string;
    sourceId?: string;
    timelineItemId?: string;
    startSeconds?: number;
    endSeconds?: number;
    trackType?: "video" | "audio";
    trackIndex?: number;
    sourceRevision?: string;
    timelineRevision?: string;
    mediaPathHash?: string;
    metadata?: Record<string, unknown>;
    indexedAt: string;
}
export interface ProjectContextDocument {
    schemaVersion: typeof PROJECT_CONTEXT_SCHEMA_VERSION;
    projectId: string;
    projectName: string;
    projectPathHash?: string;
    revision: string;
    sourceRevision: string;
    timelineRevision: string;
    updatedAt: string;
    records: ProjectContextRecord[];
}
export interface ProjectContextSummary {
    projectId: string;
    projectName: string;
    revision: string;
    sourceRevision: string;
    timelineRevision: string;
    recordCount: number;
    updatedAt: string;
}
export type ContextBackendName = "sqlite" | "json" | "memory";
export declare function defaultProjectContextDirectory(): string;
export interface ProjectContextRepositoryOptions {
    backend?: "auto" | ContextBackendName;
    directory?: string;
}
export declare class ProjectContextRepository {
    private readonly options;
    private backendPromise?;
    constructor(options?: ProjectContextRepositoryOptions);
    private createBackend;
    private backend;
    backendName(): Promise<ContextBackendName>;
    get(projectId: string): Promise<ProjectContextDocument | undefined>;
    put(document: ProjectContextDocument): Promise<void>;
    delete(projectId: string): Promise<boolean>;
    list(): Promise<ProjectContextSummary[]>;
    close(): Promise<void>;
}
export interface ProjectContextSearchOptions {
    query: string;
    sequenceId?: string;
    kinds?: ProjectContextKind[];
    limit?: number;
}
export interface ProjectContextSearchResult {
    score: number;
    record: ProjectContextRecord;
    matchedTerms: string[];
}
export declare function searchProjectContext(document: ProjectContextDocument, options: ProjectContextSearchOptions): ProjectContextSearchResult[];
export declare function contextRevision(sourceRevision: string, timelineRevision: string, records: ProjectContextRecord[]): string;
export declare function stableContextId(...parts: unknown[]): string;
export declare function normalizeContextText(value: unknown): string;
export declare function normalizeContextKeywords(value: unknown): string[];
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