import type { PendingQuestionType } from '../task/task-state.js';
/**
 * Declares what a provider adapter can do at runtime.
 * TaskManager reads these at startup and uses them to route behavior.
 */
export interface ProviderCapabilities {
    /** Session survives server restart (e.g. Codex rollout files). */
    sessionPersistence: boolean;
    /** Distinct approve/decline protocol (e.g. Codex 4 approval types). */
    structuredApproval: boolean;
    /** Can stream tokens/chunks. */
    streamingOutput: boolean;
    /** Has explicit cancel primitive (e.g. turn/interrupt). */
    abortPrimitive: boolean;
    /** Supports thread/read-style probe for crash recovery. */
    crashRecovery: boolean;
    /** How the provider selects a model. */
    modelRouting: 'config' | 'api-param' | 'none';
    /** Emits structured rate-limit error. */
    rateLimitSignal: boolean;
    /** Subset of the 5 PendingQuestion types this provider supports. */
    pauseTypes: readonly PendingQuestionType[];
}
export declare const CODEX_CAPABILITIES: Readonly<ProviderCapabilities>;
export declare const COPILOT_CAPABILITIES: Readonly<ProviderCapabilities>;
export declare const CLAUDE_CAPABILITIES: Readonly<ProviderCapabilities>;
export interface ValidationResult {
    ok: boolean;
    reason?: string;
}
/**
 * Validates that a pause type is supported by the provider's capabilities.
 * Returns `{ ok: false, reason }` if the provider does not support the given type.
 */
export declare function validateResponseAgainstCapabilities(caps: ProviderCapabilities, pauseType: PendingQuestionType): ValidationResult;