/**
 * Effective prompt availability.
 *
 * A prompt may open only when the invocation is interactive — the explicit
 * `--non-interactive` flag wins over `CI` and stdin detection in both
 * directions — and machine output is off. Machine output is an absolute
 * prohibition: a JSON invocation never prompts even from a terminal or with
 * an explicit interaction flag. The Screen combines this resolution with its
 * frame's ability to paint a prompt into `Screen.canAsk`, the one decision
 * planning, command handlers, and the screen itself read.
 */
import * as Effect from "effect/Effect";
import type * as Config from "effect/Config";
export declare const isMachineOutput: Effect.Effect<boolean>;
/** Whether the invocation's flags and environment allow a prompt to open. */
export declare const promptAvailability: Effect.Effect<boolean, Config.ConfigError>;
/** Whether a coding agent, rather than a person, is driving this invocation. */
export declare const isAgentSession: Effect.Effect<boolean, Config.ConfigError>;
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