/**
 * Resolve + persist model/agent token prices.
 *
 * Lookup order for a turn: admin override → built-in preset → (LLM only)
 * caller-supplied backend rates / pi-ai catalog / global default, which
 * live in `estimateChargeUsd`.
 */
import { type TokenPrice } from './model-price-presets.js';
export type PriceKind = 'llm' | 'cli';
export type PriceSource = 'override' | 'preset' | 'fallback' | 'unset';
export interface ModelPriceRow {
    key: string;
    kind: PriceKind;
    id: string;
    preset: TokenPrice | null;
    current: TokenPrice;
    source: PriceSource;
}
export declare function llmPriceKey(modelId: string): string;
export declare function agentPriceKey(agent: string): string;
export declare function parsePriceKey(key: string): {
    kind: PriceKind;
    id: string;
} | null;
export declare function getModelPriceOverrides(): Record<string, TokenPrice>;
export declare function setModelPriceOverride(key: string, price: TokenPrice | null): void;
export declare function applyModelPriceOverrides(patch: Record<string, TokenPrice | null>): void;
export declare function resolveTokenPrice(input: {
    model?: string;
    agent?: string;
}): {
    price: TokenPrice;
    source: PriceSource;
    key: string;
} | null;
export declare function listModelPriceRows(extraLlmIds?: string[]): ModelPriceRow[];
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