chore(release): 0.15.2

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: aqua5230

CHANGELOG.en.md

@@ -7,6 +7,15 @@ Format follows [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+## [0.15.2] - 2026-06-02
+
+### Fixed
+- **Steadier background refresh**: file-change–triggered refreshes are now always marshalled to the main thread, and the refresh routine has an outer guard so it can't get stuck in a state where it never refreshes again.
+
+### Performance
+- **Lighter refresh when sessions pile up**: history change-detection narrowed from scanning all of `~/.claude` to the `~/.claude/projects` it actually reads; Codex recent-session enumeration now walks the dated folder structure and scans only what's needed (skipping hidden files like `.DS_Store`) instead of rglob-ing the whole tree on every refresh.
+- **No stall on first launch / offline**: the pricing-table download moved to the background; cost calculation always uses the local cache or built-in fallback first and auto-refreshes once the download lands. A long-running app also refreshes pricing in the background after the cache expires.
+
 ## [0.15.1] - 2026-06-02
 
 ### Fixed

CHANGELOG.md

@@ -6,6 +6,15 @@
 
 ## [Unreleased]
 
+## [0.15.2] - 2026-06-02
+
+### 修正
+- **背景刷新更穩定**：檔案變動觸發的刷新一律切回主執行緒處理，並在刷新流程最外層加上保險，避免極少數情況下刷新狀態卡住、之後再也不更新。
+
+### 效能
+- **session 變多時刷新更輕**：歷史用量的變動偵測從掃描整個 `~/.claude` 收斂到實際會讀的 `~/.claude/projects`；Codex 最近 session 的列舉改用日期資料夾結構只掃必要範圍（並自動略過 `.DS_Store` 之類隱藏檔），不再每次刷新都掃整棵目錄樹。
+- **首次啟動／離線時成本不卡頓**：價格表的網路下載移到背景進行，計算成本時一律先用本機快取或內建預設值，下載完成後再自動刷新一次；長時間開著的 app 在快取過期後也會自行在背景更新。
+
 ## [0.15.1] - 2026-06-02
 
 ### 修正

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "usage"
-version = "0.15.1"
+version = "0.15.2"
 description = "usage — 在 macOS menu bar 顯示 Claude Code 用量的繁中小工具（也提供終端機 TUI）"
 readme = "README.md"
 requires-python = ">=3.13"