Usage 0.15.4

萬一選單列的彈出面板（popover，顯示各項數據的小視窗）內嵌的網頁載入失敗，它不會再直接裝死不理你，或是留一片看不懂的空白灰畫面。現在它會換成一個原生的錯誤畫面，把具體的錯誤細節列出來，並附上一個能直接跳轉去回報問題的 GitHub 連結；如果你有另外設定 USAGE_DEBUG=1 這個環境變數（給進階使用者用的除錯開關），導覽失敗、畫面渲染逾時這些狀況還會被記錄下來，方便追查。這就像去銀行辦事，如果號碼牌機器壞了，以前它就直接黑畫面讓你傻站在那邊；現在它會在螢幕上顯示「機器故障，錯誤代碼 E-42」，還附上一張填好資訊、可以直接遞給維修人員的意見反映單。

If the embedded web panel inside the popover (the small window showing your stats) fails to load, it no longer just silently freezes or leaves a blank grey window with no explanation. Now it shows a native error view listing the actual error detail, plus a GitHub link you can jump straight to for reporting the issue; if you separately set the USAGE_DEBUG=1 environment variable (an advanced debug switch), navigation failures and render timeouts also get logged for easier diagnosis. It's like going to the bank: if the ticket machine breaks, instead of just going dark and leaving you standing there confused, it now displays "Machine error, code E-42" on screen, complete with a pre-filled feedback slip you can hand straight to the technician.