feat: multi-tab support in MainArea

- Refactor MainArea: tabs array + activeTabId (was single activeTab)
- Open/close tabs dynamically, status tab not closable
- Tab opener buttons (keys/cli/slowlog/memory) in top-right
- Right-click context menu: close/closeOthers/closeRight/closeLeft
- Mouse wheel cycling through tabs
- Scrollable tab bar with hidden scrollbar
- i18n keys for tab context menu (zh-CN + en)

src/components/MainArea.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/MainArea.vue
-import { ref, watch } from 'vue'
+import { ref, watch, computed, nextTick } from 'vue'
 import { useConnectionStore } from '@renderer/stores/connection'
 import { useI18n } from '@renderer/i18n'
 import StatusView from './StatusView.vue'
@@ -16,70 +16,165 @@ const { t } = useI18n()
 const props = defineProps<{ showSettings: boolean }>()
 const emit = defineEmits<{ 'update:showSettings': [v: boolean] }>()
 
-type Tab = 'status' | 'keys' | 'cli' | 'slowlog' | 'memory'
-const activeTab = ref<Tab>('status')
+interface Tab {
+  id: string
+  type: 'status' | 'keys' | 'cli' | 'slowlog' | 'memory'
+  title: string
+  icon: string
+  closable: boolean
+}
 
+const tabs = ref<Tab[]>([])
+const activeTabId = ref<string>('')
+const tabBarRef = ref<HTMLElement | null>(null)
+
+const activeTab = computed(() => tabs.value.find(t => t.id === activeTabId.value) ?? null)
+
+function makeTab(type: Tab['type']): Tab {
+  const titles: Record<Tab['type'], string> = {
+    status: t('status.title'),
+    keys: t('key.title'),
+    cli: t('cli.title'),
+    slowlog: t('slowlog.title'),
+    memory: t('memory.title'),
+  }
+  const icons: Record<Tab['type'], string> = {
+    status: 'Monitor',
+    keys: 'Document',
+    cli: 'Monitor',
+    slowlog: 'Clock',
+    memory: 'Odometer',
+  }
+  return {
+    id: `${type}_${Date.now()}_${Math.random().toString(36).slice(2, 6)}`,
+    type,
+    title: titles[type],
+    icon: icons[type],
+    closable: type !== 'status',
+  }
+}
+
+function openTab(type: Tab['type']) {
+  // For single-instance types, switch to existing if open
+  const existing = tabs.value.find(t => t.type === type)
+  if (existing) {
+    activeTabId.value = existing.id
+    return
+  }
+  const tab = makeTab(type)
+  tabs.value.push(tab)
+  activeTabId.value = tab.id
+  // Scroll to end
+  nextTick(() => {
+    if (tabBarRef.value) {
+      tabBarRef.value.scrollLeft = tabBarRef.value.scrollWidth
+    }
+  })
+}
+
+function closeTab(id: string) {
+  const idx = tabs.value.findIndex(t => t.id === id)
+  if (idx < 0) return
+  tabs.value.splice(idx, 1)
+  if (activeTabId.value === id) {
+    if (tabs.value.length === 0) {
+      activeTabId.value = ''
+    } else {
+      const newIdx = Math.min(idx, tabs.value.length - 1)
+      activeTabId.value = tabs.value[newIdx].id
+    }
+  }
+}
+
+function closeOthers(id: string) {
+  tabs.value = tabs.value.filter(t => t.id === id || !t.closable)
+  activeTabId.value = id
+}
+
+function closeRight(id: string) {
+  const idx = tabs.value.findIndex(t => t.id === id)
+  tabs.value = tabs.value.filter((t, i) => i <= idx || !t.closable)
+  if (!tabs.value.find(t => t.id === activeTabId.value)) {
+    activeTabId.value = id
+  }
+}
+
+function closeLeft(id: string) {
+  const idx = tabs.value.findIndex(t => t.id === id)
+  tabs.value = tabs.value.filter((t, i) => i >= idx || !t.closable)
+  if (!tabs.value.find(t => t.id === activeTabId.value)) {
+    activeTabId.value = id
+  }
+}
+
+// Right-click context menu
+const contextMenu = ref<{ visible: boolean; x: number; y: number; tabId: string }>({
+  visible: false, x: 0, y: 0, tabId: '',
+})
+
+function onTabContextMenu(e: MouseEvent, tab: Tab) {
+  if (!tab.closable) return
+  e.preventDefault()
+  contextMenu.value = { visible: true, x: e.clientX, y: e.clientY, tabId: tab.id }
+}
+
+function closeContextMenu() {
+  contextMenu.value.visible = false
+}
+
+// Mouse wheel cycling
+function onWheel(e: WheelEvent) {
+  e.preventDefault()
+  if (tabs.value.length < 2) return
+  const idx = tabs.value.findIndex(t => t.id === activeTabId.value)
+  if (idx < 0) return
+  const dir = e.deltaY > 0 ? 1 : -1
+  const nextIdx = (idx + dir + tabs.value.length) % tabs.value.length
+  activeTabId.value = tabs.value[nextIdx].id
+}
+
+// Reset tabs when connection state changes
 watch(
   () => connStore.isConnected,
   (connected) => {
     if (connected) {
-      activeTab.value = 'status'
+      tabs.value = [makeTab('status')]
+      activeTabId.value = tabs.value[0].id
+    } else {
+      tabs.value = []
+      activeTabId.value = ''
     }
   }
 )
 </script>
 
 <template>
-  <div class="main-area">
-    <div class="tab-bar" v-if="connStore.isConnected">
-      <button
+  <div class="main-area" @click="closeContextMenu">
+    <div class="tab-bar" v-if="connStore.isConnected" ref="tabBarRef" @wheel.passive="onWheel">
+      <div
+        v-for="tab in tabs"
+        :key="tab.id"
         class="tab-item"
-        :class="{ active: activeTab === 'status' }"
-        @click="activeTab = 'status'"
+        :class="{ active: activeTabId === tab.id }"
+        @click="activeTabId = tab.id"
+        @contextmenu="onTabContextMenu($event, tab)"
       >
-        <el-icon><Monitor /></el-icon>
-        {{ t('status.title') }}
-      </button>
-      <button
-        class="tab-item"
-        :class="{ active: activeTab === 'keys' }"
-        @click="activeTab = 'keys'"
-      >
-        <el-icon><Document /></el-icon>
-        {{ t('key.title') }}
-      </button>
-      <button
-        class="tab-item"
-        :class="{ active: activeTab === 'cli' }"
-        @click="activeTab = 'cli'"
-      >
-        <el-icon><Monitor /></el-icon>
-        {{ t('cli.title') }}
-      </button>
-      <button
-        class="tab-item"
-        :class="{ active: activeTab === 'slowlog' }"
-        @click="activeTab = 'slowlog'"
-      >
-        <el-icon><Clock /></el-icon>
-        {{ t('slowlog.title') }}
-      </button>
-      <button
-        class="tab-item"
-        :class="{ active: activeTab === 'memory' }"
-        @click="activeTab = 'memory'"
-      >
-        <el-icon><Odometer /></el-icon>
-        {{ t('memory.title') }}
-      </button>
+        <el-icon><component :is="tab.icon" /></el-icon>
+        <span class="tab-title">{{ tab.title }}</span>
+        <span
+          v-if="tab.closable"
+          class="tab-close"
+          @click.stop="closeTab(tab.id)"
+        >×</span>
+      </div>
     </div>
     <div class="tab-content">
-      <template v-if="connStore.isConnected">
-        <StatusView v-if="activeTab === 'status'" />
-        <KeyBrowser v-else-if="activeTab === 'keys'" />
-        <CliView v-else-if="activeTab === 'cli'" />
-        <SlowLogView v-else-if="activeTab === 'slowlog'" />
-        <MemoryAnalysis v-else-if="activeTab === 'memory'" />
+      <template v-if="connStore.isConnected && activeTab">
+        <StatusView v-if="activeTab.type === 'status'" />
+        <KeyBrowser v-else-if="activeTab.type === 'keys'" />
+        <CliView v-else-if="activeTab.type === 'cli'" />
+        <SlowLogView v-else-if="activeTab.type === 'slowlog'" />
+        <MemoryAnalysis v-else-if="activeTab.type === 'memory'" />
       </template>
       <div v-if="!connStore.isConnected" class="no-connection">
         <div class="placeholder-icon">JRD</div>
@@ -88,6 +183,43 @@ watch(
       </div>
     </div>
 
+    <!-- Tab open buttons (when connected) -->
+    <div class="tab-opener" v-if="connStore.isConnected">
+      <button class="opener-btn" @click="openTab('keys')" :title="t('key.title')">
+        <el-icon><Document /></el-icon>
+      </button>
+      <button class="opener-btn" @click="openTab('cli')" :title="t('cli.title')">
+        <el-icon><Monitor /></el-icon>
+      </button>
+      <button class="opener-btn" @click="openTab('slowlog')" :title="t('slowlog.title')">
+        <el-icon><Clock /></el-icon>
+      </button>
+      <button class="opener-btn" @click="openTab('memory')" :title="t('memory.title')">
+        <el-icon><Odometer /></el-icon>
+      </button>
+    </div>
+
+    <!-- Right-click context menu -->
+    <div
+      v-if="contextMenu.visible"
+      class="context-menu"
+      :style="{ left: contextMenu.x + 'px', top: contextMenu.y + 'px' }"
+      @click.stop
+    >
+      <div class="context-item" @click="closeTab(contextMenu.tabId); closeContextMenu()">
+        {{ t('tab.close') }}
+      </div>
+      <div class="context-item" @click="closeOthers(contextMenu.tabId); closeContextMenu()">
+        {{ t('tab.closeOthers') }}
+      </div>
+      <div class="context-item" @click="closeRight(contextMenu.tabId); closeContextMenu()">
+        {{ t('tab.closeRight') }}
+      </div>
+      <div class="context-item" @click="closeLeft(contextMenu.tabId); closeContextMenu()">
+        {{ t('tab.closeLeft') }}
+      </div>
+    </div>
+
     <!-- Settings Drawer -->
     <el-drawer
       :model-value="showSettings"
@@ -108,6 +240,7 @@ watch(
   display: flex;
   flex-direction: column;
   min-width: 0;
+  position: relative;
 }
 
 .tab-bar {
@@ -116,10 +249,16 @@ watch(
   border-bottom: 1px solid var(--border-color);
   background: var(--bg-secondary);
   flex-shrink: 0;
+  overflow-x: auto;
+  scrollbar-width: none;
+}
+
+.tab-bar::-webkit-scrollbar {
+  display: none;
 }
 
 .tab-item {
-  padding: 10px 16px;
+  padding: 8px 14px;
   font-size: 12px;
   font-weight: 500;
   color: var(--text-muted);
@@ -130,16 +269,45 @@ watch(
   display: flex;
   align-items: center;
   gap: 6px;
-  transition: color 0.15s, border-color 0.15s;
+  transition: color 0.15s, border-color 0.15s, background 0.15s;
+  white-space: nowrap;
+  flex-shrink: 0;
+  position: relative;
 }
 
 .tab-item:hover {
   color: var(--text-primary);
+  background: var(--bg-hover);
 }
 
 .tab-item.active {
   color: var(--accent-light);
   border-bottom-color: var(--accent-light);
+  background: var(--bg-primary);
+}
+
+.tab-title {
+  max-width: 120px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.tab-close {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 16px;
+  height: 16px;
+  border-radius: 3px;
+  font-size: 14px;
+  line-height: 1;
+  color: var(--text-muted);
+  margin-left: 2px;
+}
+
+.tab-close:hover {
+  background: var(--danger);
+  color: #fff;
 }
 
 .tab-content {
@@ -147,6 +315,62 @@ watch(
   overflow: hidden;
 }
 
+.tab-opener {
+  position: absolute;
+  top: 0;
+  right: 0;
+  display: flex;
+  gap: 2px;
+  padding: 4px 8px;
+  background: var(--bg-secondary);
+  border-bottom: 1px solid var(--border-color);
+  border-left: 1px solid var(--border-color);
+  z-index: 5;
+}
+
+.opener-btn {
+  width: 26px;
+  height: 26px;
+  border: none;
+  background: transparent;
+  color: var(--text-muted);
+  cursor: pointer;
+  border-radius: 4px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 13px;
+  transition: all 0.15s;
+}
+
+.opener-btn:hover {
+  background: var(--bg-hover);
+  color: var(--accent-light);
+}
+
+.context-menu {
+  position: fixed;
+  z-index: 9999;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-color);
+  border-radius: 6px;
+  box-shadow: var(--shadow-md);
+  min-width: 140px;
+  padding: 4px 0;
+}
+
+.context-item {
+  padding: 6px 14px;
+  font-size: 12px;
+  color: var(--text-primary);
+  cursor: pointer;
+}
+
+.context-item:hover {
+  background: var(--bg-hover);
+  color: var(--accent-light);
+}
+
 .no-connection {
   height: 100%;
   display: flex;

src/i18n/locales/en.ts

@@ -20,6 +20,12 @@ export default {
     subtitle: 'A modern Redis desktop manager',
     placeholder: 'Select or create a connection to get started',
   },
+  tab: {
+    close: 'Close',
+    closeOthers: 'Close Others',
+    closeRight: 'Close to the Right',
+    closeLeft: 'Close to the Left',
+  },
   connection: {
     title: 'Connections',
     new: 'New Connection',

src/i18n/locales/zh-CN.ts

@@ -20,6 +20,12 @@ export default {
     subtitle: '现代 Redis 桌面管理器',
     placeholder: '选择或创建连接开始使用',
   },
+  tab: {
+    close: '关闭',
+    closeOthers: '关闭其他',
+    closeRight: '关闭右侧',
+    closeLeft: '关闭左侧',
+  },
   connection: {
     title: '连接',
     new: '新建连接',