MountBridge 1.3.0

Added

• Credentialed SMB share browsing. "SMB shares on host" now takes a
  username, password and optional domain, so NAS boxes that refuse anonymous
  listing (e.g. QNAP) show their shares. Login and connection failures are
  reported (Login failed, Host unreachable, …) instead of "no shares".
• Broadcast hits get a Browse Shares button that switches to share listing
  for that host.
• Each discovered share shows the local path it would be mounted at, and
  shares that are already configured show Added instead of Add Mount.
• The Add dialog opened from discovery is pre-filled with the share name,
  proposed local path, and the credentials used for listing (the password
  is saved to the keyring as usual, never to mounts.json).

Changed

• New mounts default to ~/mnt/<name> instead of ~/.mounts/<name>.
  Existing mounts keep the paths stored in their config.