lodestone v0.3.0

Added

• System tray. lodestone now lives in the menu bar / tray. The tray menu
  shows how many bots are online and lets you reopen the window, start the
  selected accounts, disconnect everyone, or quit, without touching the main
  window. The tooltip reflects the live online count.
• Account avatars. Every account now shows its Minecraft head, so the list
  is much easier to scan at a glance.
• Re-sign-in prompt. If a running account's Microsoft session expires,
  lodestone reopens the device-code dialog for exactly that account instead of
  silently failing to reconnect. Cancelling stops the account.
• Confirmation before removing an account, so a stray click can no longer
  delete a sign-in by accident.

Changed

• Closing the window keeps lodestone running in the tray instead of quitting,
  so your accounts stay connected in the background. Use the tray's Quit entry
  to exit completely.

Fixed

• Bot status messages (kick reasons, connection failures, engine-start errors)
  now follow the selected interface language instead of always showing in
  German.