/** The row's content-addressed revision identity: a lowercase hex sha-256. */
export declare const REVISION_ID_PATTERN: RegExp;
export interface RevisionContent {
    slug: string;
    displayName: string;
    description: string;
    category: string;
    tags: string[];
    source: string;
    kind: "executable" | "instruction";
    version?: string;
    skillMd?: string;
    bundleSha256?: string;
    bundleByteSize?: number;
    lifecycle?: "active" | "archived";
    archiveReason?: string;
    replacementSlug?: string;
}
export declare function revisionIdOf(content: RevisionContent): string;
export declare function revisionIdOfRecord(record: RevisionContent): string;
/**
 * The legacy-row marker the 0004 migration leaves behind.
 *
 * Migration 0004 adds revision_id with DEFAULT '', so rows written before the migration
 * carry an empty id. An empty id would make the If-Match guard vacuous for those rows:
 * two clients that both read '' would both "match" and both land, silently overwriting
 * each other. The stores replace the marker with a real content sha on first open
 * (idempotent: new code always writes a full id, so the marker never reappears).
 */
export declare const LEGACY_REVISION_ID = "";
/** True when a revision id is the empty legacy marker (needs backfill). */
export declare function isLegacyRevisionId(value: string): boolean;