import type { EnvironmentId, ThreadId } from "@t3tools/contracts"; export interface CheckpointDiffTarget {  readonly environmentId: EnvironmentId | null;  readonly threadId: ThreadId | null;  readonly fromTurnCount: number | null;  readonly toTurnCount: number | null;  readonly ignoreWhitespace: boolean;} export function normalizeComposerPathSearchQuery(query: string | null): string {  return query?.trim() ?? "";} export function buildCheckpointDiffTargets(target: CheckpointDiffTarget) {  if (    target.environmentId === null ||    target.threadId === null ||    target.fromTurnCount === null ||    target.toTurnCount === null  ) {    return { fullThread: null, turn: null } as const;  }   if (target.fromTurnCount === 0) {    return {      fullThread: {        environmentId: target.environmentId,        input: {          threadId: target.threadId,          toTurnCount: target.toTurnCount,          ignoreWhitespace: target.ignoreWhitespace,        },      },      turn: null,    } as const;  }   return {    fullThread: null,    turn: {      environmentId: target.environmentId,      input: {        threadId: target.threadId,        fromTurnCount: target.fromTurnCount,        toTurnCount: target.toTurnCount,        ignoreWhitespace: target.ignoreWhitespace,      },    },  } as const;}