export declare function rememberCodexThreadWorkspace(threadId: string | null | undefined, cwd: string | null | undefined): void;
/** Resolve a rollout's identity from its native metadata, never its filename. */
export declare function readCodexRolloutThreadId(filePath: string): string;
export declare function readCodexThreadActiveTurnId(threadId: string | null | undefined): string | null;
export type CodexThreadWriterState = {
    hasRollout: boolean;
    activeTurnId: string | null;
    updatedAt: number;
};
export declare function readCodexThreadWriterState(threadId: string | null | undefined): CodexThreadWriterState;
export declare function readCodexThreadWorkspace(threadId: string | null | undefined, preferredWorkspace?: string | null): string | null;
export type CodexThreadRuntime = {
    model: string | null;
    reasoningEffort: string | null;
};
export declare function readCodexThreadRuntime(threadId: string | null | undefined): CodexThreadRuntime;
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