jim800121chen 3c6971febd fix(local-tool): Review M1-M4 + m5 修復 — flash 生命週期 + store 隔離
Review 問題修復:

M1(寫已關閉 channel panic):
- flash service goroutine 改成先等 driver.Flash() 返回,再寫 error 訊息,最後 close
- driver.Flash 返回後保證不再寫 progressCh,消除 race condition

M2(FlashTask 永不清除 memory leak):
- service.go 新增 CleanupTask(taskID) 公開方法
- device_handler.go 的 goroutine 在 `for range progressCh` 結束後呼叫 CleanupTask

M3(同裝置重複 flash taskID 衝突):
- ProgressTracker.Create 改成:舊 task 未完成時返回 nil
- StartFlash 檢查 nil → 回傳 "flash already in progress" 錯誤

M4(前端 flash store 全域不區分 deviceId):
- flash-store.ts 新增 activeDeviceId 欄位
- updateProgress 改接 (deviceId, progress),比對 activeDeviceId 防止混裝
- use-flash-progress.ts 的 WebSocket callback 傳入 deviceId

m5(flash_ws.go 雙重 conn.Close):
- read pump goroutine 移除 defer conn.Close(),由外層 defer 統一關閉

額外修復(S4):
- modelPath 為空時直接回 error 而非傳無效路徑給 driver

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-12 20:16:24 +08:00
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