export declare class ONIHarnessError extends Error {
    readonly code: string;
    constructor(message: string, code: string);
}
export declare class FeatureRegistryMutationError extends ONIHarnessError {
    constructor(featureId: string, attemptedField: string);
}
export declare class FeatureRegistryAlreadyInitializedError extends ONIHarnessError {
    constructor(path: string);
}
export declare class FeatureNotFoundError extends ONIHarnessError {
    constructor(featureId: string);
}
export declare class SessionBridgeNotOpenError extends ONIHarnessError {
    constructor();
}
export declare class EnvironmentUnhealthyError extends ONIHarnessError {
    readonly smokeTestOutput: string;
    constructor(smokeTestOutput: string);
}
export declare class ContractNotFoundError extends ONIHarnessError {
    constructor(id: string);
}
export declare class ContractNotApprovedError extends ONIHarnessError {
    constructor(proposalId: string);
}
export declare class ContractAlreadyFinalizedError extends ONIHarnessError {
    constructor(proposalId: string, existingContractId: string);
}
export declare class WorkspaceGitUnavailableWarning {
    readonly message = "git not found in PATH. WorkspaceCheckpointer running in SQLite-only mode.";
    readonly code = "GIT_UNAVAILABLE";
}
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