/**
 * Capability Registry — 宿主能力协商 + Provider 管理
 * FR-I01, FR-I02
 */
export type HostCapabilityName = 'llm' | 'network' | 'file-read' | 'file-write' | 'tool-exec';
export type ProviderCapability = 'text-generation' | 'embedding' | 'structured-output';
export type ProviderSelectionStrategy = 'priority' | 'round-robin';
export interface HostCapabilityDeclaration {
    name: HostCapabilityName;
    version: string;
    contract: string;
    available: boolean;
    metadata?: Record<string, unknown>;
}
export interface HostCapabilityChangeEvent {
    capability: HostCapabilityDeclaration;
    changedAt: Date;
}
export interface RegisteredProvider {
    id: string;
    capabilities: ProviderCapability[];
    priority?: number;
    available: boolean;
    metadata?: Record<string, unknown>;
}
export interface CapabilityRegistryOptions {
    selectionStrategy?: ProviderSelectionStrategy;
}
export declare class CapabilityRegistry {
    private readonly capabilities;
    private readonly providers;
    private readonly listeners;
    private selectionCursor;
    private selectionStrategy;
    constructor(options?: CapabilityRegistryOptions);
    registerHostCapabilities(capabilities: HostCapabilityDeclaration[]): void;
    listCapabilities(): HostCapabilityDeclaration[];
    getCapability(name: HostCapabilityName): HostCapabilityDeclaration | null;
    updateCapability(name: HostCapabilityName, patch: Partial<HostCapabilityDeclaration>): Promise<void>;
    onCapabilityChange(handler: (event: HostCapabilityChangeEvent) => void | Promise<void>): void;
    offCapabilityChange(handler: (event: HostCapabilityChangeEvent) => void | Promise<void>): void;
    registerProvider(provider: RegisteredProvider): void;
    updateProviderAvailability(providerId: string, available: boolean): void;
    listProviders(): RegisteredProvider[];
    selectProvider(capability: ProviderCapability): RegisteredProvider | null;
    resolveActivatedDomains(): {
        dictionary: boolean;
        pipeline: boolean;
        artifactReview: boolean;
        conflictDetection: 'full' | 'degraded';
    };
    private emitCapabilityChange;
}
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