/**
 * @catalog_tier      A
 * @guardrail         pattern_id_stability
 * @routes_to         log10x_pattern_trend, log10x_pattern_examples, log10x_whats_new
 *
 * log10x_whats_changing — patterns ranked by delta vs a baseline window.
 *
 * Answers the "what grew (or shrank) the most since X" question. Distinct
 * from `log10x_top_volume`, which ranks by current cost. This tool ranks
 * by delta and applies gates that drop noise-level changes.
 *
 * Multi-offset baseline averaging (1x/2x/3x timeRange) joined per
 * (pattern_hash, service, severity) tuple, applies DEFAULT_GATES floors,
 * using the StructuredOutput envelope and the shared baseline machinery in
 * `top-volume-extras.ts` / gates in `lib/gates.ts`.
 *
 * Brand-new patterns (no baseline samples) are EXCLUDED from this tool's
 * output — they go to `log10x_whats_new` for clean separation of stories.
 */
import { z } from 'zod';
import type { EnvConfig } from '../lib/environments.js';
import { type StructuredOutput } from '../lib/output-types.js';
export declare const whatsChangingSchema: {
    timeRange: z.ZodDefault<z.ZodEnum<["1d", "7d", "30d"]>>;
    comparison_window: z.ZodDefault<z.ZodUnion<[z.ZodEnum<["1d", "7d", "14d", "30d", "auto"]>, z.ZodString]>>;
    service: z.ZodOptional<z.ZodString>;
    severity: z.ZodOptional<z.ZodString>;
    limit: z.ZodDefault<z.ZodNumber>;
    min_delta_usd: z.ZodOptional<z.ZodNumber>;
    min_delta_contribution_pct: z.ZodOptional<z.ZodNumber>;
    analyzerCost: z.ZodOptional<z.ZodNumber>;
    environment: z.ZodOptional<z.ZodString>;
    view: z.ZodDefault<z.ZodEnum<["summary", "markdown"]>>;
};
export declare function executeWhatsChanging(args: {
    timeRange?: string;
    comparison_window?: string;
    service?: string;
    severity?: string;
    limit?: number;
    min_delta_usd?: number;
    min_delta_contribution_pct?: number;
    analyzerCost?: number;
    view?: 'summary' | 'markdown';
}, env: EnvConfig): Promise<string | StructuredOutput>;