import type { EscalationSignal } from '../types/escalation.types.js';
import type { SpendingTracker } from '../utils/spending-tracker.js';
export interface BudgetConfig {
    per_command_usd?: number;
    per_session_usd?: number;
    per_stage_tokens?: number;
    policy: 'strict' | 'tolerant';
}
export interface BudgetEstimate {
    estimatedCostUsd?: number;
    estimatedTokens?: number;
}
export interface SessionTotal {
    totalCostUsd: number;
    totalTokens: number;
}
export declare class SessionBudgetService {
    private readonly tracker;
    private readonly budgetConfig;
    constructor(tracker: Pick<SpendingTracker, 'getRecords'>, budgetConfig: BudgetConfig | undefined);
    buildBudgetEscalationSignal(spentUsd: number, limitUsd: number, stageName: string): EscalationSignal;
    getSessionTotal(sessionId: string): SessionTotal;
    wouldExceed(sessionId: string, estimate: BudgetEstimate): boolean;
    private exceedsPerCommandLimit;
    private exceedsPerSessionLimit;
    private exceedsStageTokenLimit;
}
export declare function getSessionBudgetService(tracker: Pick<SpendingTracker, 'getRecords'>, budgetConfig: BudgetConfig | undefined): SessionBudgetService;
export declare function resetSessionBudgetService(): void;
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