/**
 * HOW TO NAME AND CAPTION AN ARTIFACT — the platform's ONE statement of it.
 *
 * Same reason as the pair above: the prompt fragment and the tool schemas must
 * quote the SAME words, or the model reads two different rules depending on
 * which surface it happened to look at.
 *
 * ⚠️ THESE TWO ARE ALSO QUOTED OUTSIDE THIS REPO. The browser sidecar creates
 * artifacts on an agent's behalf (a screenshot, a recording) and declares
 * `artifactTitle` / `artifactDescription` on the tools that make them — before
 * that, it invented the captions itself and produced eight rows in one run
 * reading `Browser screenshot — page-<timestamp>.png`, each page saying
 * `Screenshot of viewport`. It is a separate container in a separate repo and
 * cannot import this module, so `sidecars/browser/src/artifact-caption.js`
 * holds a copy and `sidecars/browser/src/__tests__/caption-guidance-parity.test.js`
 * READS THIS FILE and fails when the two stop matching. Reword here, run that
 * test, carry the new words across in the same change.
 */
export declare const ARTIFACT_TITLE_RULE: string;
export declare const ARTIFACT_DESCRIPTION_RULE: string;
/** Test hook — the budget is process-lifetime state, so a suite must clear it. */
export declare function __resetPublishBudget(): void;
/**
 * Compare the source we sent with the source read back. Returns null when they
 * are identical, otherwise a descriptor naming WHAT differs — length delta, the
 * first differing character offset, and a short excerpt of each side, in the same
 * "name the defect and where" spirit as the validation gate's defects.
 *
 * `kind` discriminates the three shapes a real failure takes, because the fix
 * differs: `truncated` (stored is a strict prefix — a cut-off write/transfer),
 * `longer` (stored has extra content appended), `diverged` (they differ mid-way —
 * a mangled encoding, or a stale/overwritten object).
 * Exported for direct unit testing; not part of the tool surface.
 */
export declare function __compareStoredSource(sent: any, stored: any): {
    kind: string;
    sentChars: any;
    storedChars: any;
    delta: number;
    firstDiffAt: number;
    sentExcerpt: string;
    storedExcerpt: string;
};
export declare const artifactSkill: any;