import type { GitBranch } from "@t3tools/contracts"; export type EnvMode = "local" | "worktree"; export function resolveEffectiveEnvMode(input: {  activeWorktreePath: string | null;  hasServerThread: boolean;  draftThreadEnvMode: EnvMode | undefined;}): EnvMode {  const { activeWorktreePath, hasServerThread, draftThreadEnvMode } = input;  return activeWorktreePath || (!hasServerThread && draftThreadEnvMode === "worktree")    ? "worktree"    : "local";} export function resolveDraftEnvModeAfterBranchChange(input: {  nextWorktreePath: string | null;  currentWorktreePath: string | null;  effectiveEnvMode: EnvMode;}): EnvMode {  const { nextWorktreePath, currentWorktreePath, effectiveEnvMode } = input;  if (nextWorktreePath) {    return "worktree";  }  if (effectiveEnvMode === "worktree" && !currentWorktreePath) {    return "worktree";  }  return "local";} export function resolveBranchToolbarValue(input: {  envMode: EnvMode;  activeWorktreePath: string | null;  activeThreadBranch: string | null;  currentGitBranch: string | null;}): string | null {  const { envMode, activeWorktreePath, activeThreadBranch, currentGitBranch } = input;  if (envMode === "worktree" && !activeWorktreePath) {    return activeThreadBranch ?? currentGitBranch;  }  return currentGitBranch ?? activeThreadBranch;} export function deriveLocalBranchNameFromRemoteRef(branchName: string): string {  const firstSeparatorIndex = branchName.indexOf("/");  if (firstSeparatorIndex <= 0 || firstSeparatorIndex === branchName.length - 1) {    return branchName;  }  return branchName.slice(firstSeparatorIndex + 1);} function deriveLocalBranchNameCandidatesFromRemoteRef(  branchName: string,  remoteName?: string,): ReadonlyArray<string> {  const candidates = new Set<string>();  const firstSlashCandidate = deriveLocalBranchNameFromRemoteRef(branchName);  if (firstSlashCandidate.length > 0) {    candidates.add(firstSlashCandidate);  }   if (remoteName) {    const remotePrefix = `${remoteName}/`;    if (branchName.startsWith(remotePrefix) && branchName.length > remotePrefix.length) {      candidates.add(branchName.slice(remotePrefix.length));    }  }   return [...candidates];} export function dedupeRemoteBranchesWithLocalMatches(  branches: ReadonlyArray<GitBranch>,): ReadonlyArray<GitBranch> {  const localBranchNames = new Set(    branches.filter((branch) => !branch.isRemote).map((branch) => branch.name),  );   return branches.filter((branch) => {    if (!branch.isRemote) {      return true;    }     const localBranchCandidates = deriveLocalBranchNameCandidatesFromRemoteRef(      branch.name,      branch.remoteName,    );    return !localBranchCandidates.some((candidate) => localBranchNames.has(candidate));  });}