/**
 * Column-agnostic CRUD over `vk_tenants`.
 *
 * Pure SQL against a caller-supplied `Querier`; no `@venturekit/data`
 * import. Reads `SELECT *` so app-added columns ride along (the data
 * client maps them). Writes take a camelCase field bag and infer the
 * right binding per value:
 *   - `status`            → cast to the `tenant_status` enum.
 *   - plain object / array → serialized + cast to `jsonb`.
 *   - `Date` / scalar / null → bound as a plain parameter.
 *
 * This lets a consumer that ALTERed extra columns onto `vk_tenants`
 * (e.g. `branding jsonb`, `secret_arn_prefix text`) create / update
 * them through the same helpers without the package knowing the shape.
 */
import type { Querier, TenantRecord, TenantStatus, TenantWriteFields } from './types.js';
/** List every tenant, newest first. */
export declare function listTenants(querier: Querier): Promise<TenantRecord[]>;
/** Fetch one tenant by id, or `null` when absent. */
export declare function getTenantById(querier: Querier, id: string): Promise<TenantRecord | null>;
/** Fetch one tenant by its unique `slug`, or `null`. */
export declare function getTenantBySlug(querier: Querier, slug: string): Promise<TenantRecord | null>;
/** Fetch one tenant by its `primary_domain`, or `null`. */
export declare function getTenantByPrimaryDomain(querier: Querier, domain: string): Promise<TenantRecord | null>;
/**
 * Insert a tenant from a camelCase field bag. Omit `id` to let the DB
 * default (`gen_random_uuid()`) assign it. The `slug` unique constraint
 * is DB-enforced — callers map `23505` via `isUniqueViolation`.
 */
export declare function createTenant(querier: Querier, fields: TenantWriteFields): Promise<TenantRecord>;
/**
 * Update a tenant from a camelCase field bag. Always bumps `updated_at`.
 * Returns the updated row, or `null` when no tenant matches `id`. A
 * no-op (`fields` empty) still touches `updated_at` and returns the row.
 */
export declare function updateTenant(querier: Querier, id: string, fields: TenantWriteFields): Promise<TenantRecord | null>;
/**
 * Convenience: flip a tenant's lifecycle `status`. Returns the updated
 * row, or `null` when no tenant matches. For richer transitions
 * (stamping `suspended_at` / `archived_at`, cascades) use the lifecycle
 * helpers in `../lifecycle`.
 */
export declare function setTenantStatus(querier: Querier, id: string, status: TenantStatus): Promise<TenantRecord | null>;
/** True when `err` is a Postgres `unique_violation` (23505). */
export declare function isUniqueViolation(err: unknown): boolean;
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