Fix workspace matching and show pull branches

[PiotrCzapla]

Two small fixes in one PR, but hopefully that is okay:

• I like to know when one of the repos is not on main during ws-sync, so I know where to look if something is off.
• My workspace had:

  [tool.uv.workspace]
  members = ["./*"]
  exclude = [".*"]

The exclude pattern matched everything because it was also tried against ./{dirname}