Function generateForkBranchName

src/node/services/workspaceService.ts:755–764

(
  forkFamilyBaseName: string,
  existingNames: string[]
)

 * `{base}-fork-{N}` pattern so numbering continues cleanly across upgrades.
 */
export function generateForkBranchName(
  forkFamilyBaseName: string,
  existingNames: string[]
): string {
  const nextForkNumber = Math.max(
    findMaxSequentialNumber(existingNames, `${forkFamilyBaseName}-`),
    findMaxSequentialNumber(existingNames, `${forkFamilyBaseName}-fork-`)
  );
  return `${forkFamilyBaseName}-${nextForkNumber + 1}`;
}

/**
 * Generate a forked workspace title by appending a " (N)" suffix to the parent title.