/**
 * LLM Guard Implementation.
 *
 * Policy decorator over ILlmService. Enforces:
 * - Per-feature enable/disable toggles
 * - Monthly budget limits
 * - Usage recording after each call
 *
 * All LLM consumers should use ILlmGuard instead of ILlmService directly.
 *
 * Part of Phase 6B: Cost/Privacy Controls.
 */
import type { ILlmGuard } from '../../domain/interfaces/ILlmGuard';
import type { ILlmService } from '../../domain/interfaces/ILlmService';
import type { ILlmConfigService } from '../../domain/interfaces/ILlmConfigService';
import type { ILlmUsageTracker } from '../../domain/interfaces/ILlmUsageTracker';
import type { IPreferenceStore } from '../../domain/interfaces/IPreferenceStore';
import type { ILogger } from '../../domain/interfaces/ILogger';
/**
 * Create an LLM guard service.
 *
 * @param llmService - Underlying LLM service for completion calls
 * @param usageTracker - Usage tracker for recording and budget checks
 * @param configService - Config service for checking master switch
 * @param preferenceStore - Preference store for per-feature toggles
 * @param logger - Optional logger
 */
export declare function createLlmGuard(llmService: ILlmService, usageTracker: ILlmUsageTracker, configService: ILlmConfigService, preferenceStore: IPreferenceStore, logger?: ILogger): ILlmGuard;
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