/**
 * Snapshot of artifacts dirs for every registered session, deduped.
 *
 * Prefers `sessionManager.getArtifactsDir()` because subagents adopt their
 * parent's `ArtifactManager` and report the parent's dir there; dedup then
 * collapses parent + N subagents (the whole agent tree) to one entry. Falls
 * back to the raw session file (with the `.jsonl` suffix stripped) when no
 * live session reference is attached.
 */
export declare function artifactsDirsFromRegistry(): string[];