/** Hermes built-in caps when config.yaml omits the keys. */
export declare const DEFAULT_MEMORY_CHAR_LIMIT = 2200;
export declare const DEFAULT_USER_CHAR_LIMIT = 1375;
export type HermesLimitsSource = "yaml" | "defaults";
export type HermesCharLimits = {
    memoryCharLimit: number;
    userCharLimit: number;
    source: HermesLimitsSource;
    /** Absolute path that was attempted. */
    configPath: string;
    warning: string | null;
};
export type LoadHermesCharLimitsOptions = {
    home: string;
    env?: NodeJS.ProcessEnv;
    /** Override config.yaml path (tests). */
    configPath?: string;
};
export declare function resolveHermesHome(home: string, env?: NodeJS.ProcessEnv): string;
export declare function hermesConfigYamlPath(home: string, env?: NodeJS.ProcessEnv): string;
/**
 * Parse only top-level `memory:` keys we need. Other Hermes YAML is ignored.
 * `source` is `yaml` when at least one cap was taken from the file.
 */
export declare function parseHermesMemoryCharLimits(yamlText: string): {
    memoryCharLimit: number;
    userCharLimit: number;
    source: HermesLimitsSource;
};
export declare function loadHermesCharLimits(options: LoadHermesCharLimitsOptions): HermesCharLimits;
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