/**
 * Pure classification of an agent turn's failure into a caller-facing status
 * (issue #390). Input is what the runner/exec engine produced — the §3.4
 * `error.code` (auth, quota, missing-binary, runner-error, …) and its
 * message, plus any assistant text the turn printed — so `agent test` and,
 * later, `agent exec` error events can share one mapping.
 *
 * The main addition over §3.4 is `model_unavailable`: every runtime reports
 * "unknown model / not on your plan" differently, and they all land in
 * `runner-error` (or `auth`, when the provider answers 403) today.
 */
export type AgentFailureStatus = 'auth' | 'quota' | 'rate_limited' | 'model_unavailable' | 'timeout' | 'missing_binary' | 'error';
export interface AgentErrorInput {
    /** The §3.4 code the engine emitted (`runner-error`, `auth`, …), if any. */
    code?: string;
    /** Error message plus any assistant text from the failed turn. */
    message?: string;
}
export interface ClassifiedAgentError {
    status: AgentFailureStatus;
    /** Error code for the caller: the §3.4 code, or `model-unavailable`. */
    code: string;
}
/** True when `message` is one of the runtimes' "model not available" errors. */
export declare function isModelUnavailable(message: string): boolean;
/** Map an engine error (code + message) to a caller-facing status. */
export declare function classifyAgentError(input: AgentErrorInput): ClassifiedAgentError;
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