/**
 * v1.3.0 Part C (P1) — artifact filing. Long Chief outputs (reports, plans,
 * specs) are saved to `<org>/artifacts/` and surfaced in chat as a card + file
 * attachment instead of being dumped as a wall of 1900-char chunks. The file is
 * git-versioned by the per-turn snapshot (git-snapshot.ts tracks `artifacts/`).
 *
 * Pure helpers here (no Discord deps) so they're unit-testable; the adapter
 * (`discord-adapter.ts`) calls `saveArtifact` then uploads the file.
 */
/**
 * Replies at or above this length are filed as artifacts rather than posted
 * inline. ~1500 chars ≈ a screenful; below it, an inline reply reads fine.
 */
export declare const ARTIFACT_MIN_CHARS = 1500;
/** Does this reply warrant filing instead of an inline post? */
export declare function isArtifactWorthy(text: string): boolean;
/** `<org>/artifacts/` directory. */
export declare function artifactsDir(orgCwd: string): string;
/**
 * Derive a human title from the content: the first markdown heading, else the
 * first non-empty line. Capped to 70 chars.
 */
export declare function deriveArtifactTitle(text: string): string;
export interface SaveArtifactInput {
    /** Human title — drives the slug + card heading. */
    title: string;
    /** Full content to persist. */
    content: string;
    /** File extension without the dot. Default "md". */
    ext?: string;
}
export interface SavedArtifact {
    /** Absolute path on disk. */
    absPath: string;
    /** Bare filename (used as the upload name). */
    fileName: string;
    /** Path relative to the org dir (for display / links). */
    relPath: string;
}
/**
 * Persist an artifact under `<org>/artifacts/<ts>-<slug>.<ext>` and return its
 * paths. `now` is injectable for deterministic tests.
 */
export declare function saveArtifact(orgCwd: string, input: SaveArtifactInput, now?: Date): SavedArtifact;