fix(local-tool): i18n type error — 用 devices.status.connecting/disconnecting

devices.connecting / devices.disconnecting 不在 TranslationDict type 裡，
改用已存在的 devices.status.connecting + 新增 devices.status.disconnecting。
刪掉上一個 commit 多加的頂層 devices.connecting / disconnecting key。

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

local-tool/frontend/src/components/devices/device-card.tsx

@@ -70,7 +70,7 @@ export function DeviceCard({ device, isFirstCard }: DeviceCardProps) {
                 onClick={() => disconnectDevice(device.id)}
               >
                 {isDisconnecting && <Loader2 className="mr-1 h-3 w-3 animate-spin" />}
-                {isDisconnecting ? t('devices.disconnecting') : t('common.disconnect')}
+                {isDisconnecting ? t('devices.status.disconnecting') : t('common.disconnect')}
               </Button>
             </>
           ) : (
@@ -81,7 +81,7 @@ export function DeviceCard({ device, isFirstCard }: DeviceCardProps) {
               {...(isFirstCard ? { 'data-tour-id': 'connect-device-btn' } : {})}
             >
               {isConnecting && <Loader2 className="mr-1 h-3 w-3 animate-spin" />}
-              {isConnecting ? t('devices.connecting') : t('common.connect')}
+              {isConnecting ? t('devices.status.connecting') : t('common.connect')}
             </Button>
           )}
         </div>

local-tool/frontend/src/lib/i18n/en.ts

@@ -67,16 +67,15 @@ export const en: TranslationDict = {
     subtitle: 'Manage your edge AI devices',
     scan: 'Scan Devices',
     scanning: 'Scanning...',
-    connecting: 'Connecting...',
-    disconnecting: 'Disconnecting...',
     noDevices: 'No devices detected. Make sure mock mode is enabled or connect a device.',
     type: 'Type',
     firmware: 'Firmware',
     flashedModel: 'Flashed Model',
     status: {
       detected: 'Detected',
-      connecting: 'Connecting',
+      connecting: 'Connecting...',
       connected: 'Connected',
+      disconnecting: 'Disconnecting...',
       flashing: 'Flashing',
       inferencing: 'Inferring',
       error: 'Error',

local-tool/frontend/src/lib/i18n/types.ts

@@ -73,6 +73,7 @@ export interface TranslationDict {
       detected: string;
       connecting: string;
       connected: string;
+      disconnecting: string;
       flashing: string;
       inferencing: string;
       error: string;

local-tool/frontend/src/lib/i18n/zh-TW.ts

@@ -67,16 +67,15 @@ export const zhTW: TranslationDict = {
     subtitle: '管理你的 Edge AI 裝置',
     scan: '掃描裝置',
     scanning: '掃描中...',
-    connecting: '連線中...',
-    disconnecting: '斷線中...',
     noDevices: '未偵測到裝置。請確認已啟用 Mock 模式或連接裝置。',
     type: '類型',
     firmware: '韌體',
     flashedModel: '已燒錄模型',
     status: {
       detected: '已偵測',
-      connecting: '連線中',
+      connecting: '連線中...',
       connected: '已連線',
+      disconnecting: '斷線中...',
       flashing: '燒錄中',
       inferencing: '推論中',
       error: '錯誤',