export interface ConfigKeyDef {
    key: string;
    type: 'string' | 'number' | 'boolean' | 'string[]';
    default: unknown;
    description: string;
    env?: string;
}
/**
 * Registry of all configurable keys, grouped by facade.
 * Add new keys here when a facade gains configurable behavior.
 */
export declare const CONFIG_SCHEMA: Record<string, ConfigKeyDef[]>;
export interface Profile {
    name: string;
    description: string;
    overrides: Record<string, Record<string, unknown>>;
}
export declare const BUILT_IN_PROFILES: Record<string, Profile>;
/**
 * Get merged config for a specific facade.
 * Merge order: defaults → profile → project config → global config → env vars
 */
export declare function getToolConfig<T extends Record<string, unknown> = Record<string, unknown>>(projectId: string | undefined, facade: string): T;
/**
 * Get the full merged config for all facades.
 */
export declare function getAllToolConfig(projectId?: string): Record<string, Record<string, unknown>>;
/**
 * Get the enabled facades list (from DECIBEL_FACADES env or config files).
 * Returns undefined if no restriction is set (all facades allowed).
 */
export declare function getEnabledFacades(projectId?: string): string[] | undefined;
/**
 * Set a config value in a project's .decibel/config.yaml.
 */
export declare function setToolConfigValue(projectId: string, facade: string, key: string, value: unknown): {
    success: boolean;
    path: string;
    message: string;
};
/**
 * Set the active profile in a project's .decibel/config.yaml.
 */
export declare function setProfile(projectId: string, profileName: string): {
    success: boolean;
    path: string;
    message: string;
};
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