/**
 * `createPostgresGovernanceLog` — durable storage for operator actions.
 *
 * NOT a full `EmergencyStateStore` implementation — the live state
 * (current `status`, `reason`, `toggledAt`, `toggledBy`) stays in-memory
 * in Phase 1.5c because the kernel's `DistributedKillSwitch` polls
 * Redis, not Postgres; persisting state to Postgres would be a
 * "hallucination of control" — the kernel wouldn't see the writes.
 *
 * What this DOES persist: the audit log of WHO TOGGLED WHAT WHEN AND
 * WHY. That trail is durable and queryable across restarts. Phase 1.5d
 * adds a Redis impl for the live state half.
 *
 * The console wires this log alongside the in-memory state store via
 * the `createDurableEmergencyStore` composite (in
 * `apps/console/src/lib/durable-emergency-store.ts`).
 */
import type { GovernanceEvent } from "@adjudicate/admin-sdk";
import { type GovernanceEventRow } from "./governance-events.js";
import type { PostgresGovernanceWriter, PostgresReader } from "./pg-reader.js";
export interface PostgresGovernanceLog {
    /** Persist a governance event. Idempotent on `id` (PK). */
    insert(event: GovernanceEvent): Promise<void>;
    /** Read recent events, newest-first. */
    history(limit: number): Promise<readonly GovernanceEvent[]>;
}
export interface CreatePostgresGovernanceLogDeps {
    readonly reader: PostgresReader;
    readonly writer: PostgresGovernanceWriter;
}
export declare function createPostgresGovernanceLog(deps: CreatePostgresGovernanceLogDeps): PostgresGovernanceLog;
/**
 * Reference INSERT statement for the `governance_events` table.
 * Adopters wrap their `pg`/`postgres.js`/Prisma client into a
 * `PostgresGovernanceWriter` whose `insertGovernanceEvent` runs this
 * statement. Exposed as a constant so the SQL stays in this package
 * (single source of truth for the row shape).
 */
export declare const INSERT_GOVERNANCE_EVENT_SQL: string;
/**
 * Helper to convert a `GovernanceEventRow` to the parameter array for
 * `INSERT_GOVERNANCE_EVENT_SQL`. Adopters use this to keep the column
 * order in sync with the SQL constant.
 */
export declare function governanceInsertParams(row: GovernanceEventRow): readonly unknown[];
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