export type NanoModelMessage = {
    role: "system" | "user" | "assistant" | "tool";
    content: string;
    name?: string;
};
export type NanoContextInput = {
    goal: string;
    instructions?: string | string[];
    context?: Record<string, unknown>;
    memory?: NanoMemorySnapshot;
    messages?: NanoModelMessage[];
};
export type NanoMemorySnapshot = {
    facts: string[];
    preferences: string[];
    constraints: string[];
    unresolvedTasks: string[];
};
export type NanoMemoryInput = Partial<NanoMemorySnapshot>;
export type TokenBudget = {
    maxInputTokens: number;
    maxOutputTokens?: number;
    reserveOutputTokens?: number;
};
export type NanoModelRequest = {
    model: string;
    messages: NanoModelMessage[];
    maxOutputTokens?: number;
};
export type NanoModelResponse = {
    text: string;
    inputTokens?: number;
    outputTokens?: number;
    costUsd?: number;
    metadata?: Record<string, unknown>;
};
export type NanoModelAdapter = {
    name: string;
    complete(request: NanoModelRequest): Promise<NanoModelResponse>;
};
export type NanoValidationResult = {
    ok: boolean;
    reason?: string;
};
export type NanoValidator = (response: NanoModelResponse) => NanoValidationResult | Promise<NanoValidationResult>;
export type NanoAgentConfig = {
    budget: TokenBudget;
    models: {
        cheap: NanoModelAdapter;
        strong?: NanoModelAdapter;
    };
    memory?: NanoMemoryInput;
    maxRecentMessages?: number;
    estimateTokens?: (text: string) => number;
    validator?: NanoValidator;
};
export type NanoContextPacket = {
    goal: string;
    messages: NanoModelMessage[];
    inputTokens: number;
    originalTokens: number;
    savedTokens: number;
    savedRatio: number;
    kept: string[];
    dropped: string[];
    memory: NanoMemorySnapshot;
};
export type NanoRunInput = NanoContextInput & {
    validator?: NanoValidator;
};
export type NanoRunReport = {
    goal: string;
    modelUsed: string;
    escalated: boolean;
    inputTokens: number;
    outputTokens?: number;
    originalTokens: number;
    savedTokens: number;
    savedRatio: number;
    estimatedCostUsd?: number;
    kept: string[];
    dropped: string[];
    validation?: NanoValidationResult;
};
export type NanoRunResult = {
    output: string;
    context: NanoContextPacket;
    report: NanoRunReport;
    raw: NanoModelResponse;
};