AI Usage 0.1.7

AI Usage 0.1.7

This release gives the menu bar panel a calmer, clearer native finish.

• Use adaptive system teal for normal quota progress while keeping warning and
  critical limits immediately recognizable.
• Keep quota values readable in both light and dark mode.
• Place Refresh and Settings in one stable Liquid Glass control with matching
  sizing and no movement while usage refreshes.
• Tighten quota rows, provider states, and accessibility labels without adding
  persistent background work.

The app stays lightweight between scheduled refreshes without keeping its panel
loaded in the background.