/**
 * attempt-context — explicit per-attempt context carried to workers.
 *
 * G-026 M3 (ADR-0004 #5/#25/#27): the worker receives an AttemptContext that
 * bounds where it may write (result/artifacts live under the CURRENT attempt
 * dir only). Old attempt-level Markdown never satisfies a new attempt's
 * completion gate; done.signal is just "result readable", not proof of success.
 */
export interface AttemptContext {
    changeId: string;
    taskId: string;
    attemptId: string;
    attemptNo: number;
    /** Absolute git repository root. */
    gitRoot: string;
    /** Absolute change dir (gitRoot/.aiws/changes/<changeId>). */
    changeDir: string;
    /** Absolute task dir (changeDir/tasks/<taskId>). */
    taskDir: string;
    /** Absolute current attempt dir (taskDir/attempts/<attemptId>). */
    attemptDir: string;
    /** Absolute evidence dir for this attempt. */
    evidenceDir: string;
    /** Absolute artifact dir for this attempt (orchestrator hashes these). */
    artifactDir: string;
    /** Absolute handoff dir (changeDir/tasks/<taskId> — read-only for worker). */
    handoffDir: string;
}
export interface AttemptContextInput {
    changeId: string;
    taskId: string;
    attemptId: string;
    attemptNo: number;
    gitRoot: string;
}
/**
 * Build the canonical per-attempt context from a change layout.
 * All paths are absolute; artifact dir is a sibling of evidence under the
 * attempt dir (never shared across attempts).
 */
export declare function buildAttemptContext(input: AttemptContextInput): AttemptContext;
/** Serialize an AttemptContext into a worker-readable handoff payload line. */
export declare function attemptContextToHandoffLine(ctx: AttemptContext): string;
/** Parse an AttemptContext from a handoff payload line (strict; throws on bad shape). */
export declare function parseAttemptContextLine(line: string): AttemptContext;