/**
 * Error classifiers for cascading recovery (§4.4, §3.3).
 *
 * Maps error signals to termination reasons or recovery strategies.
 * Classifiers are pure functions — no I/O.
 */
import type { HardCheckResult, EvalVerdict, WorkerDiagnostics } from '../coordinator/state.js';
import type { TerminationReason } from '../coordinator/transitions.js';
export interface ClassifiedError {
    category: 'recoverable' | 'terminal';
    terminalReason?: TerminationReason;
    recoveryHint: string;
}
/**
 * Classify a hard-check failure into a recovery category.
 */
export declare function classifyHardCheckFailure(results: HardCheckResult[]): ClassifiedError;
/**
 * Classify an evaluator verdict into a recovery category.
 */
export declare function classifyEvalFailure(verdict: EvalVerdict): ClassifiedError;
/**
 * Classify a generic error (e.g., from planner or runtime).
 */
export declare function classifyRuntimeError(error: unknown): ClassifiedError;
export type RootCauseKind = 'source_unavailable' | 'model_capability_exceeded' | 'information_unavailable' | 'network_transient' | 'quality_insufficient';
export interface RootCauseClassification {
    kind: RootCauseKind;
    userMessage: string;
    retryStrategy: 'fix-attempt' | 'awaiting_human' | 'terminal';
    terminalReason?: TerminationReason;
}
export declare function classifyRootCause(verdict: EvalVerdict | undefined, hardCheckResults: HardCheckResult[], diagnostics: WorkerDiagnostics | undefined): RootCauseClassification;
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