feat: Command Log dialog

- New commandLogger.ts: in-memory log (max 5000 entries)
- withLog() wrapper in ipc-handlers.ts for all write commands
- CommandLog.vue: table with time/command/duration, write-only filter
- IPC: redis:getCommandLog, redis:clearCommandLog
- Ctrl+G shortcut from Sidebar
- i18n keys (zh-CN + en)

src/i18n/locales/zh-CN.ts

@@ -156,6 +156,16 @@ export default {
     sortDesc: '降序',
     scanned: '已扫描 {n} 个',
   },
+  commandLog: {
+    title: '命令日志',
+    time: '时间',
+    command: '命令',
+    duration: '耗时',
+    connection: '连接',
+    onlyWrite: '仅写操作',
+    clear: '清空',
+    empty: '暂无命令记录',
+  },
   status: {
     title: '状态',
     database: '数据库',