feat: Stream consumer groups UI

- stream.ts: streamGroups, streamConsumers, streamGroupCreate, streamGroupDestroy, streamAck
- IPC: redis:streamGroups, streamConsumers, streamGroupCreate, streamGroupDestroy, streamAck
- Preload bridge + types for all new methods
- StreamEditor.vue: collapsible consumer groups panel
  - XINFO GROUPS table with name/consumers/pending/last-delivered-id
  - Click group to expand XINFO CONSUMERS
  - Create group dialog (name, start ID, MKSTREAM)
  - Destroy group with confirm
- i18n keys (zh-CN + en)
- P1 complete!

src/i18n/locales/zh-CN.ts

@@ -132,6 +132,18 @@ export default {
     entryId: 'ID (使用 * 自动生成)',
     fields: '字段',
     maxLength: '最大长度',
+    consumerGroups: '消费者组',
+    group: '组名',
+    consumers: '消费者',
+    pending: '待处理',
+    createGroup: '创建组',
+    destroyGroup: '删除组',
+    groupName: '组名称',
+    startId: '起始 ID',
+    mkstream: '自动创建流',
+    ack: 'ACK',
+    ackConfirm: '确认 ACK 选中的条目？',
+    noGroups: '暂无消费者组',
   },
   cli: {
     title: 'CLI',