feat: CLI SUBSCRIBE/MONITOR streaming mode

- New pubsub.ts: startSubscribe/stopSubscribe/startMonitor/stopMonitor
- IPC: redis:subscribe, redis:unsubscribe, redis:monitor, redis:monitorStop
- Streaming messages pushed via webContents.send
- Preload: onSubscribeMessage/onMonitorMessage callbacks
- CliView: detect SUBSCRIBE/PSUBSCRIBE/MONITOR, switch to streaming mode
- Stop button with pulsing indicator (green=subscribe, yellow=monitor)
- Real-time message display with timestamps
- Auto-cleanup on unmount
- i18n keys (zh-CN + en)

electron/preload/index.ts

@@ -119,6 +119,22 @@ const electronAPI = {
       ipcRenderer.invoke('redis:getCommandLog'),
     clearCommandLog: (): Promise<void> =>
       ipcRenderer.invoke('redis:clearCommandLog'),
+    // Pub/Sub
+    subscribe: (id: string, channels: string[], isPattern: boolean): Promise<any> =>
+      ipcRenderer.invoke('redis:subscribe', id, channels, isPattern),
+    unsubscribe: (id: string): Promise<void> =>
+      ipcRenderer.invoke('redis:unsubscribe', id),
+    onSubscribeMessage: (callback: (msg: any) => void) => {
+      ipcRenderer.on('redis:subscribeMessage', (_e, msg) => callback(msg))
+    },
+    // Monitor
+    monitor: (id: string): Promise<any> =>
+      ipcRenderer.invoke('redis:monitor', id),
+    monitorStop: (id: string): Promise<void> =>
+      ipcRenderer.invoke('redis:monitorStop', id),
+    onMonitorMessage: (callback: (msg: any) => void) => {
+      ipcRenderer.on('redis:monitorMessage', (_e, msg) => callback(msg))
+    },
   },
   updater: {
     check: (): Promise<any> => ipcRenderer.invoke('updater:check'),