v0.4.1

Fixed

• /ctf start initial push — the first push to a brand-new empty remote
  had no upstream tracking, so it always failed with "no upstream branch" and
  left the operator to run git push -u origin main manually (and the
  fallback message hardcoded main even on repos defaulting to master).
  Now pushes explicitly with -u origin <branch>, reading the real branch
  name from git status — works on the first try regardless of
  init.defaultBranch.