DeepFocus v1.0.4

Added

• Traffic light buttons on HUD: macOS-style close/minimize/zoom buttons are
  now always visible in the top-left corner of the HUD.
  • Red (×): hides the HUD (disabled during an active timer).
  • Yellow (−): miniaturizes the HUD to the Dock with the standard genie animation.
  • Green: disabled (no meaningful zoom action for a floating HUD).
• Dock icon toggle: Clicking the Dock icon now toggles the HUD — shows it
  if hidden, hides it if visible. Restores from the Dock when miniaturized.
• "Check for Updates…" in app menu: Added beside "About DeepFocus" with a
  separator, in addition to the menu bar menu.
• Reactive update button: Title changes to "Install Update…" when Sparkle
  finds a new version; resets after dismissal or error.
• Version label in menu bar menu: "DeepFocus v1.0.4" always visible in the
  menu bar dropdown.

Removed

• Services submenu: Removed unused macOS Services submenu.