/**
 * Configuration Loader
 *
 * Loads agent configuration from:
 *  1. JSON file (--config path)
 *  2. CLI argument overrides
 *  3. Environment variable overrides
 *
 * Merges in order: defaults ← JSON file ← env vars ← CLI args
 */
import type { AgentConfig } from "./types.js";
/**
 * Read and parse a JSON config file.
 * Throws with a descriptive message on failure.
 */
export declare function loadConfigFile(filePath: string): AgentConfig;
/**
 * Read well-known environment variables and return a partial config.
 * Only set fields are returned — undefined values are omitted.
 */
export declare function loadEnvOverrides(): Partial<AgentConfig>;
/**
 * Build the final resolved configuration by merging:
 *   defaults ← configFile ← envOverrides ← cliOverrides
 *
 * @param configFilePath  Optional path to a JSON config file
 * @param cliOverrides    Partial config from CLI argument parsing
 * @returns Fully resolved AgentConfig (all fields populated)
 */
export declare function resolveConfig(configFilePath?: string, cliOverrides?: Partial<AgentConfig>): Required<AgentConfig>;
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