import type { ThinkingLevel } from "./config.js";
import type { DiscoveredModel, RoutingStage, TaskFeatures } from "./modelRouting.js";
export interface RoutingBudgets {
    maxEstimatedUsdPerStage: number;
    maxEstimatedUsdPerRun: number;
    maxObservedUsdPerRun: number;
    maxEstimatedUsdPerDay: number;
    maxObservedUsdPerDay: number;
    maxPaidFallbacksPerRun: number;
    allowUnknownCost: boolean;
}
export interface RoutingCircuitBreakers {
    maxSelectionFailures: number;
    repeatedRejectionFingerprintLimit: number;
    maxBuildPassesWithoutImprovement: number;
    requireIndependentChecker: boolean;
}
export interface RoutingBudgetSnapshot {
    estimatedRunUsd: number;
    observedRunUsd: number;
    estimatedDayUsd: number;
    observedDayUsd: number;
    paidFallbacks: number;
    attemptsByStage: Partial<Record<RoutingStage, number>>;
}
export type RoutingCostEstimate = {
    status: "known";
    estimatedUsd: number;
} | {
    status: "unknown";
    reason: string;
};
export type ObservedRoutingCost = {
    status: "known";
    observedUsd: number;
} | {
    status: "unknown";
    reason: string;
};
export type RoutingBudgetDecision = {
    allowed: true;
    reason: string;
} | {
    allowed: "ask";
    reason: string;
} | {
    allowed: false;
    reason: string;
};
export declare const DEFAULT_ROUTING_BUDGETS: RoutingBudgets;
export declare const DEFAULT_ROUTING_CIRCUIT_BREAKERS: RoutingCircuitBreakers;
export declare function estimateRoutingStageCost(input: {
    task: TaskFeatures;
    model: Pick<DiscoveredModel, "cost">;
    thinking: ThinkingLevel;
}): RoutingCostEstimate;
export declare function enforceRoutingBudget(input: {
    stage: RoutingStage;
    estimate: RoutingCostEstimate;
    budgets: RoutingBudgets;
    snapshot: RoutingBudgetSnapshot;
    unattended: boolean;
}): RoutingBudgetDecision;
export declare function addEstimatedRoutingCost(snapshot: RoutingBudgetSnapshot, stage: RoutingStage, estimate: RoutingCostEstimate): RoutingBudgetSnapshot;
export declare function reconcileObservedRoutingCost(snapshot: RoutingBudgetSnapshot, observed: ObservedRoutingCost): RoutingBudgetSnapshot;