/**
 * Only session transcripts are archivable. The session roots also hold current-state files that must stay live:
 * captured capability artifacts (`canon/artifacts/`), captured memory files (`…/memory/…`), and index docs
 * (`SKIPPED.md`, `MAPPING.md`, `PROJECTIONS.md`, `.gitkeep`). 09-26: the prefix-only filter had archived ~1.3k of them.
 */
export declare function isArchivablePath(p: string): boolean;
/**
 * The files of ONE session move and dedupe together: chunks (`<id>.jsonl.part-NNNN`), sidecars (`<id>.events.jsonl`,
 * `<id>.meta.json`), and subagent files (`<id>/subagents/…`, `<id>.subagents/…`). Key = the path up to the first uuid
 * segment (its stem), else the directory + the basename's stem.
 */
export declare function sessionUnit(p: string): string;
export interface CanonArchiveOptions {
    store: string;
    days?: number;
    dryRun?: boolean;
    push?: boolean;
}
/**
 * Remove UNTRACKED files that are byte-identical to an archived copy at the same original path, before a commit
 * stages them. Two writers re-create archived sessions on disk: the browser-branch fold-in (`git checkout FETCH_HEAD
 * -- native/browser-cortex` restores every file the branch holds) and harness roots whose copies are re-staged
 * unchanged. Without this, every sync re-adds them and every archive run drops them again (seen 09-26: 77 files per
 * cycle). A session that grew differs from its archived copy and stays; files tracked in HEAD are never touched.
 */
export declare function dropArchivedDuplicates(store: string, label: string): number;
/**
 * Remove a NEWLY staged session that is an ECHO of a session the store already holds under a DIFFERENT project dir
 * (same harness, same file names, identical bytes — live or archived). Mechanism (09-26, 21 archived ids): a hosted box
 * hydrates sessions with `pull --native --project "$PWD"` into ~/.claude/projects/-root/, then its outbound sync captures
 * them as new sessions under native/claude-code/-root/ → `canon pull <uuid>` became ambiguous. Unit-level (sessionUnit):
 * the whole session must be new under this dir and every file must match the SAME other dir; a session continued on
 * the box differs and is kept. Files tracked in HEAD are never touched.
 */
export declare function dropEchoedSessions(store: string, label: string): number;
/** Archive under the store's single-writer lock (withStoreLock); busy = nothing done this cycle (0). */
export declare function canonArchive(opts: CanonArchiveOptions): Promise<number>;
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