export type TruncationStrategy = "head-heavy" | "tail-heavy" | "balanced";

export interface ToolGuardRule {
  maxChars: number;
  headRatio: number;
  hint?: string;
}

export interface OutputGuardConfig {
  enabled: boolean;
  defaultMaxChars: number;
  defaultHeadRatio: number;
  tools: Record<string, Partial<ToolGuardRule>>;
  exempt: string[];
  notifications: {
    showTruncation: boolean;
  };
}

export interface TruncationInfo {
  tool: string;
  originalChars: number;
  keptChars: number;
  removedPercent: number;
  headRatio: number;
  hint: string;
  savedPath?: string;
}