/**
 * Pure policy for which app ports to expose.
 *
 * Keeps boot/resume/empty/conflict/capacity rules out of the I/O orchestrator
 * so those rules can grow without nesting another ladder inside scan/prompt/
 * update code.
 */
import { type AppPortCandidate } from './app-ports.js';
export type AppPortSelectionDecision = {
    kind: 'selected';
    selected: number[];
    notice?: string;
} | {
    kind: 'prompt';
} | {
    kind: 'non-interactive';
    selected: number[];
    notice: string;
};
export interface DecideAppPortSelectionInput {
    branch: string;
    exposePorts?: readonly number[];
    reusable: boolean;
    previousSelected: readonly number[];
    candidates: readonly AppPortCandidate[];
    configured: readonly number[];
    tty: boolean;
}
/** Room left for app ports once the configured set and reserved noVNC are in. */
export declare function remainingAppPortCapacity(configured: readonly number[]): number;
export declare function candidatePortsOf(candidates: readonly AppPortCandidate[]): number[];
export declare function candidatesFitCapacity(configured: readonly number[], candidates: readonly AppPortCandidate[]): boolean;
export declare function decideAppPortSelection(input: DecideAppPortSelectionInput): AppPortSelectionDecision;