export interface CortexMDEntry {
    path: string;
    content: string;
    mtimeMs: number;
}
export interface CortexMDBlock {
    type: 'text';
    text: string;
}
export interface CortexMDInjectorOptions {
    /** Session id — usually process.env.CORTEX_SESSION_ID. Undefined/invalid → in-memory only. */
    sessionId?: string;
    /** Directory where per-session cache files live. */
    cacheDir?: string;
    /** Direct cache file override (used by tests to bypass session-id logic). */
    cacheFile?: string | null;
}
export declare class CortexMDInjector {
    private cache;
    private readonly cacheFile;
    constructor(options?: CortexMDInjectorOptions);
    private loadCache;
    private persistCache;
    /** markOnlyPaths: entries whose path is in this set update the mtime cache
     *  (so future reads of sibling files skip them) but do not emit a block.
     *  Intended for the tool's own target file — the agent already has its
     *  content as the primary tool response and does not need a duplicate. */
    buildBlocks(device: string, entries: CortexMDEntry[], markOnlyPaths?: Set<string>): CortexMDBlock[];
}
export declare function getDefaultCortexInjector(): CortexMDInjector;