/**
 * [WHO]: Provides THINKING_LEVELS, THINKING_LEVELS_WITH_XHIGH, modelSupportsThinking,
 *        modelSupportsXhigh, availableThinkingLevels, clampThinkingLevel, nextThinkingLevel
 * [FROM]: Depends on @catui/ai (supportsXhigh, Model) and @catui/agent-core (ThinkingLevel)
 * [TO]: Consumed by core/runtime/model-controller.ts and core/runtime/agent-session.ts; reusable by any caller that maps a model to
 *       its thinking-level vocabulary (e.g. rpc/print mode)
 * [HERE]: core/runtime/agent-session.ts split (P4.2) — pure thinking-level logic, no session state
 *
 * Extracted from AgentSession: the stateless decision logic for which thinking levels a model
 * supports, clamping a requested level into the supported set, and cycling. AgentSession's
 * setThinkingLevel/cycleThinkingLevel/getAvailableThinkingLevels/supportsThinking methods
 * delegate here; the side-effects (agent.setThinkingLevel, persistence) stay in the session.
 */
import type { Model } from "@catui/ai/types";
import type { ThinkingLevel } from "@catui/agent-core";
export declare const THINKING_LEVELS: ThinkingLevel[];
/** Thinking levels including xhigh (for supported models). */
export declare const THINKING_LEVELS_WITH_XHIGH: ThinkingLevel[];
/** Whether a model supports thinking/reasoning at all. */
export declare function modelSupportsThinking(model: Model<any> | undefined): boolean;
/** Whether a model supports the xhigh thinking level. */
export declare function modelSupportsXhigh(model: Model<any> | undefined): boolean;
/**
 * Thinking levels available for a model. The provider clamps further to what the
 * specific model supports internally.
 */
export declare function availableThinkingLevels(model: Model<any> | undefined): ThinkingLevel[];
/** Clamp a requested level into the available set (prefer higher, then lower, then first). */
export declare function clampThinkingLevel(level: ThinkingLevel, availableLevels: ThinkingLevel[]): ThinkingLevel;
/** Next level when cycling; undefined if the model does not support thinking. */
export declare function nextThinkingLevel(current: ThinkingLevel, model: Model<any> | undefined): ThinkingLevel | undefined;