import type { ModelTier, CodeHealthSignals, HealthAdjustedRoute } from '../types/index.js';
export type { CodeHealthSignals, HealthAdjustedRoute };
/**
 * SPEC-640: Compute code health signals for a file.
 * Returns default signals when file cannot be read.
 */
export declare function computeHealthSignals(projectPath: string, filePath: string, coveragePercent?: number | null): Promise<CodeHealthSignals>;
/**
 * SPEC-640: Adjust a model route based on code health signals.
 * Returns the adjusted model and a rationale explaining why.
 */
export declare function adjustModelForHealth(original: ModelTier, signals: CodeHealthSignals): HealthAdjustedRoute;
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