/**
 * Reusable validation logic with error recovery
 *
 * These helpers add retry logic to schema validations.
 * They are used AFTER mode detection, within each handler.
 */
import { Effect, Option as O } from "effect";
/**
 * Validate color input with retry on error (for single mode)
 */
export declare const validateColor: (colorOpt: O.Option<string>) => Effect.Effect<string & import("effect/Brand").Brand<"ColorString">, import("effect/ParseResult").ParseError, never>;
/**
 * Validate stop position with retry on error
 */
export declare const validateStop: (stopOpt: O.Option<number>) => Effect.Effect<100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000, import("effect/ParseResult").ParseError, never>;
/**
 * Validate output format with retry on error
 */
export declare const validateFormat: (formatOpt: O.Option<string>) => Effect.Effect<"hex" | "rgb" | "oklch" | "oklab", import("effect/ParseResult").ParseError, never>;
/**
 * Validate export target with retry on error
 */
export declare const validateExportTarget: (exportOpt: O.Option<string>) => Effect.Effect<"none" | "json" | "clipboard", import("effect/ParseResult").ParseError, never>;
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