/**
 * describeSchema — pure-functional SDK tool that returns a JSON descriptor of
 * all drizzle tables and their columns, sourced from the tasks-schema barrel.
 *
 * This is a Category B SDK Tool: harness-agnostic, no I/O, no database
 * connection required. The drizzle schema objects are introspected statically
 * via `getTableColumns` and the internal `ExtraConfigBuilder` symbol.
 *
 * @arch SDK Tool (Category B) — T10071 / Epic T9835 / Saga T9831
 * @task T10071
 *
 * @example
 * ```typescript
 * import { describeSchema } from './describe-schema.js';
 *
 * const descriptor = describeSchema();
 * console.log(descriptor.tables.map((t) => t.name));
 * // => ['tasks_tasks', 'tasks_task_dependencies', 'tasks_sessions', ...]
 *
 * // Task-domain symbols are rebound to the PREFIXED consolidated tables
 * // (T11883 · E3), so the described physical name is `tasks_tasks`.
 * const tasksCols = descriptor.tables.find((t) => t.name === 'tasks_tasks')?.columns;
 * console.log(tasksCols?.map((c) => c.name));
 * // => ['id', 'title', 'status', ...]
 * ```
 */
import type { SchemaDescriptor } from '@cleocode/contracts';
/**
 * Return a static JSON descriptor of all drizzle tables in the tasks schema.
 *
 * No database connection is required — introspection is performed on the
 * drizzle table objects exported from `packages/core/src/store/schema/`.
 *
 * @returns SchemaDescriptor with one entry per drizzle table
 *
 * @example
 * ```typescript
 * const { tables } = describeSchema();
 * const tasksTable = tables.find((t) => t.name === 'tasks');
 * // => { name: 'tasks', columns: [...], indexes: [...] }
 * ```
 */
export declare function describeSchema(): SchemaDescriptor;
/**
 * Registered SDK tool wrapping describeSchema for external discovery.
 *
 * @example
 * ```typescript
 * import { describeSchemaRegistered } from './describe-schema.js';
 * const result = describeSchemaRegistered.invoke({});
 * ```
 */
export declare const describeSchemaRegistered: import("./sdk-tool.js").RegisteredSdkTool<Record<string, never>, SchemaDescriptor>;
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