import type { ActorRuntimeProvenance } from "./actor-contract.js";
import type { ReasoningEffort } from "./reasoning-effort.js";
export declare const TERMINAL_RUNTIME_PACKAGE = "@openai/codex";
export declare const TERMINAL_RUNTIME_VERSION_TIMEOUT_MS = 60000;
/** Exact semver only: no registry tags, ranges, URLs, or shell syntax. */
export declare function isExactRuntimeVersion(value: unknown): value is string;
/** Captured Codex CLI output: `codex-cli 0.153.3\n`. Other shapes fail closed. */
export declare function parseTerminalRuntimeVersion(stdout: string): string | undefined;
export declare function shellQuote(value: string): string;
export declare function buildRuntimeVersionCommand(requestedVersion?: string): string;
export declare function buildRuntimeExecPrefix(version: string, model?: string, reasoningEffort?: ReasoningEffort): string;
export declare function declaredRuntimeProvenance(args: {
    version?: string;
    model?: string;
    reasoningEffort?: ReasoningEffort;
}): ActorRuntimeProvenance;