import type { Model } from "@oh-my-pi/pi-ai";
import type { AgentSession } from "../../session/agent-session";
import type { theme as Theme } from "../theme/theme";
type CategoryId = "systemPrompt" | "systemContext" | "systemTools" | "skills" | "messages";
interface CategoryInfo {
    id: CategoryId;
    label: string;
    tokens: number;
    color: "accent" | "warning" | "success" | "userMessageText" | "customMessageLabel";
    glyph: string;
}
export interface ContextBreakdown {
    model: Model | undefined;
    contextWindow: number;
    categories: CategoryInfo[];
    usedTokens: number;
    autoCompactBufferTokens: number;
    freeTokens: number;
}
/**
 * Compute a breakdown of estimated context usage by category for the active
 * session and model.
 */
export declare function computeContextBreakdown(session: AgentSession): ContextBreakdown;
/**
 * Render a colorful context-usage panel as ANSI text. Output is a series of
 * lines pairing the grid (left) with the legend (right).
 */
export declare function renderContextUsage(breakdown: ContextBreakdown, theme: typeof Theme): string;
export {};