/**
 * Config Engine Operations — EngineResult wrappers for config domain.
 *
 * Migrated from `packages/cleo/src/dispatch/engines/config-engine.ts`
 * (ENG-MIG-15 / T1582 / ADR-057 D1). All business logic remains in
 * `../config.ts`; this module only adds the `EngineResult` envelope so the
 * CLI dispatch layer can call core directly per ADR-057 D1.
 *
 * Includes T1677 additions: `configLlmDaemonProvider` + `configLlmDaemonModel`
 * for reading and writing the daemon LLM provider/model to the global config.
 *
 * Importable from `@cleocode/core/internal` — no intermediate engine file
 * required in the CLI layer.
 *
 * @module config/engine-ops
 * @task T1582 — ENG-MIG-15
 * @task T1677 — LLM daemon config commands
 * @epic T1566
 * @epic T1676
 */
import { type EngineResult } from '../engine-result.js';
/**
 * Get a config value by key (dot-notation supported) or the full config.
 *
 * Returns the full project config object when `key` is omitted.
 * Returns a single value when `key` is specified.
 *
 * @param projectRoot - Absolute path to the project root directory.
 * @param key - Optional dot-notation config key (e.g. `session.autoStart`).
 * @returns EngineResult with the config value or full config object.
 * @task T1582 — ENG-MIG-15
 */
export declare function configGet(projectRoot: string, key?: string): Promise<EngineResult<unknown>>;
/**
 * Set a config value by key (dot-notation supported).
 *
 * Creates intermediate objects as needed. Parses string values into
 * appropriate types (boolean, number, null, JSON).
 *
 * @param projectRoot - Absolute path to the project root directory.
 * @param key - Dot-notation config key (e.g. `session.autoStart`).
 * @param value - Value to set. Strings are parsed into appropriate types.
 * @returns EngineResult with the key, parsed value, and scope.
 * @task T1582 — ENG-MIG-15
 */
export declare function configSet(projectRoot: string, key: string, value: unknown): Promise<EngineResult<{
    key: string;
    value: unknown;
}>>;
/**
 * Apply a strictness preset to the project config.
 *
 * Valid presets: `strict`, `standard`, `minimal`.
 * Merges preset values over existing config — unrelated keys are preserved.
 * Idempotent: applying the same preset twice yields the same config.
 *
 * @param projectRoot - Absolute path to the project root directory.
 * @param preset - Preset name (`strict` | `standard` | `minimal`).
 * @returns EngineResult with the applied preset details.
 * @task T067
 * @task T1582 — ENG-MIG-15
 */
export declare function configSetPreset(projectRoot: string, preset: string): Promise<EngineResult<unknown>>;
/**
 * List all available strictness presets with descriptions and values.
 *
 * Synchronous — reads from the in-memory preset definitions.
 *
 * @returns EngineResult with the array of preset descriptors.
 * @task T067
 * @task T1582 — ENG-MIG-15
 */
export declare function configListPresets(): EngineResult<unknown>;
/**
 * Set the daemon LLM provider in the global config (`~/.cleo/config.json`).
 *
 * Writes `llm.daemon.provider = <provider>`. Valid providers:
 * `anthropic` | `openai` | `gemini` | `moonshot`.
 *
 * @param provider - The provider transport name to set.
 * @returns EngineResult with the updated provider value.
 * @task T1677
 * @epic T1676
 */
export declare function configLlmDaemonProvider(provider: string): Promise<EngineResult<{
    key: string;
    value: unknown;
}>>;
/**
 * Set the daemon LLM model in the global config (`~/.cleo/config.json`).
 *
 * Writes `llm.daemon.model = <modelId>`. The model string is provider-specific
 * (e.g. `claude-sonnet-4-6`, `gpt-4o`, `gemini-2.0-flash`).
 * No validation is done on the model string itself — the provider is
 * responsible for reporting unknown model errors at call time.
 *
 * Default: `claude-sonnet-4-6` (used when no value is configured).
 *
 * @param model - The full model identifier string to set.
 * @returns EngineResult with the updated model value.
 * @task T1677
 * @epic T1676
 */
export declare function configLlmDaemonModel(model: string): Promise<EngineResult<{
    key: string;
    value: unknown;
}>>;
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