/**
 * ADR DB Sync (ADR-017)
 *
 * Syncs ADR markdown frontmatter into the architecture_decisions DB table.
 *
 * Single command: ct adr sync (or admin.adr.sync)
 * - Updates architecture_decisions + adr_task_links in SQLite (runtime search)
 *
 * NOTE: `.cleo/adrs/adr-index.jsonl` is FROZEN as of T10165 (Saga T9855). The
 * canonical store for the same metadata is the `attachments` table provenance
 * columns shipped by T10158, reachable via `cleo docs fetch <adr-slug>` and
 * the docs SSoT graph (T10162/T10164). This sync no longer writes the JSONL;
 * the file is preserved on disk for one deprecation cycle so external scripts
 * that still read it continue to work — append a NEW line to it and the
 * `cleo check canon docs` gate fails with `E_ADR_INDEX_JSONL_FROZEN`.
 *
 * This file is DISTINCT from the agent pipeline_manifest (ADR-027). The
 * pipeline_manifest for agent outputs lives in tasks.db and is accessed via
 * `cleo manifest` CLI.
 *
 * @task T4792
 * @task T4942 — ADR index generation folded in so one command keeps both in sync
 * @task T10165 — adr-index.jsonl write path retired; backfilled into attachments
 */
import type { AdrSyncResult } from './types.js';
/**
 * Sync all ADR markdown files into the architecture_decisions table.
 *
 * As of T10165 (Saga T9855) the `.cleo/adrs/adr-index.jsonl` portability
 * export is frozen — the canonical store for the same metadata is now the
 * `attachments` table (T10158 provenance columns).
 */
export declare function syncAdrsToDb(projectRoot: string): Promise<AdrSyncResult>;
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