import type { AIProfilesRegistry } from "./types.js";
/** Separator for the canonical profile+choice lookup key (`cheap/default`). */
export declare const PROFILE_CHOICE_KEY_SEP: "/";
export interface ProfileChoiceRef {
    profile: string;
    choice: string;
}
export declare function formatProfileChoiceKey(profile: string, choice: string): string;
/**
 * Parse `profile/choice` (also accepts `profile\choice` on input).
 * Rejects empty segments and keys with more than one separator.
 * Segment names accept `-` or `_` interchangeably at lookup time.
 */
export declare function parseProfileChoiceKey(input: string): ProfileChoiceRef | undefined;
export declare function isProfileChoiceKeyFormat(input: string): boolean;
export type StrictProfileInputMatch = {
    kind: "profileChoice";
    profile: string;
    choice: string;
} | {
    kind: "invalidChoice";
    profile: string;
    choice: string;
};
/**
 * Resolve input to an explicit profile+choice pair.
 * Accepts only `profile/choice` or `profile\choice` composite keys.
 */
export declare function matchStrictProfileInput(registry: Pick<AIProfilesRegistry, "profiles">, input: string): StrictProfileInputMatch | undefined;
export declare function listRegistryProfileChoiceKeys(registry: Pick<AIProfilesRegistry, "profiles">): ProfileChoiceRef[];
export declare function isKnownProfileChoiceInput(registry: Pick<AIProfilesRegistry, "profiles">, input: string): boolean;
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