diff --git a/ROADMAP.md b/ROADMAP.md
index 33cf621..ce6d982 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -42,12 +42,12 @@
 
 ## P3 — 体验优化
 
-- [ ] **右键菜单** — key 列表右键：复制/删除/多选/导出/内存分析/加载文件夹/删除文件夹
-- [ ] **多选增强** — Shift+Click 范围选择，全选复选框
-- [ ] **快捷键增强** — Ctrl+,(设置) / Ctrl+G(命令日志) / Ctrl+W(关闭标签) / Ctrl+S(保存) / Ctrl+L(清CLI) / Ctrl+/(帮助)
-- [ ] **连接颜色标记** — 每个连接可选颜色（预定义色板）
-- [ ] **连接拖拽排序** — Sortable.js 拖拽重排连接列表
-- [ ] **复制连接** — 右键复制现有连接配置
+- [x] **右键菜单** — key 列表右键：复制/删除/多选/导出/内存分析/加载文件夹/删除文件夹
+- [x] **多选增强** — Shift+Click 范围选择，全选复选框
+- [x] **快捷键增强** — Ctrl+,(设置) / Ctrl+G(命令日志) / Ctrl+W(关闭标签) / Ctrl+S(保存) / Ctrl+L(清CLI) / Ctrl+/(帮助)
+- [x] **连接颜色标记** — 每个连接可选颜色（预定义色板）
+- [x] **连接拖拽排序** — Sortable.js 拖拽重排连接列表
+- [x] **复制连接** — 右键复制现有连接配置
 - [ ] **侧边栏可拖拽** — 调整宽度 200–1500px，持久化
 - [ ] **DB 自定义名称** — 用户可重命名 DB0 → 生产库，下拉显示
 - [ ] **DB key 数量显示** — 下拉框显示每个 DB 的 key 数量
diff --git a/src/components/CliView.vue b/src/components/CliView.vue
index 9919796..7fe55bd 100644
--- a/src/components/CliView.vue
+++ b/src/components/CliView.vue
@@ -131,6 +131,14 @@ async function execute() {
       return
     }
 
+    // Handle SELECT — update current DB
+    if (command === 'SELECT' && args.length > 0) {
+      const dbNum = parseInt(args[0], 10)
+      if (!isNaN(dbNum)) {
+        connStore.currentDb = dbNum
+      }
+    }
+
     const result = await window.electronAPI.redis.execute(connStore.activeId, command, args)
     let formatted = ''
 
@@ -155,6 +163,27 @@ async function execute() {
     }
 
     history.value.push({ cmd, result: formatted })
+
+    // Dispatch refresh-key-list for write commands
+    const writeCommands = new Set([
+      'SET', 'SETEX', 'SETNX', 'PSETEX', 'MSET', 'MSETNX', 'APPEND', 'GETSET', 'GETDEL',
+      'HSET', 'HSETNX', 'HMSET', 'HDEL',
+      'LPUSH', 'LPUSHX', 'RPUSH', 'RPUSHX', 'LSET', 'LINSERT', 'LREM', 'LPOP', 'RPOP',
+      'SADD', 'SREM', 'SMOVE', 'SPOP', 'SINTERSTORE', 'SUNIONSTORE', 'SDIFFSTORE',
+      'ZADD', 'ZREM', 'ZINCRBY', 'ZPOPMIN', 'ZPOPMAX', 'ZINTERSTORE', 'ZUNIONSTORE',
+      'XADD', 'XDEL', 'XTRIM', 'XSETID', 'XGROUP', 'XGROUP', 'XGROUP',
+      'DEL', 'UNLINK', 'RENAME', 'RENAMENX',
+      'EXPIRE', 'EXPIREAT', 'PEXPIRE', 'PEXPIREAT', 'PERSIST',
+      'FLUSHDB', 'FLUSHALL', 'SWAPDB', 'MOVE', 'COPY',
+      'GEOADD', 'GEODEL',
+      'PFADD', 'PFMERGE',
+      'BITOP', 'SETBIT',
+      'JSON.SET', 'JSON.DEL', 'JSON.ARRAPPEND', 'JSON.ARRINSERT', 'JSON.ARRPOP',
+      'JSON.NUMINCRBY', 'JSON.STRAPPEND',
+    ])
+    if (writeCommands.has(command)) {
+      window.dispatchEvent(new CustomEvent('refresh-key-list'))
+    }
   } catch (err: any) {
     history.value.push({ cmd, result: `ERROR: ${err.message}`, error: true })
   }
@@ -345,15 +374,21 @@ function onMonitorMessage(msg: any) {
   nextTick(() => { if (outputRef.value) outputRef.value.scrollTop = outputRef.value.scrollHeight })
 }
 
+function onClearCli() {
+  history.value = []
+}
+
 onMounted(() => {
   window.electronAPI.redis.onSubscribeMessage(onSubscribeMessage)
   window.electronAPI.redis.onMonitorMessage(onMonitorMessage)
+  window.addEventListener('clear-cli', onClearCli)
 })
 
 onUnmounted(() => {
   if (connStore.activeId && streamingMode.value !== 'none') {
     stopStreaming()
   }
+  window.removeEventListener('clear-cli', onClearCli)
 })
 </script>
 
diff --git a/src/components/ConnectionCard.vue b/src/components/ConnectionCard.vue
index c1d34b7..f363288 100644
--- a/src/components/ConnectionCard.vue
+++ b/src/components/ConnectionCard.vue
@@ -1,12 +1,15 @@
 <script setup lang="ts">
 // src/renderer/src/components/ConnectionCard.vue
-import { computed } from 'vue'
+import { computed, ref } from 'vue'
+import { ElMessage } from 'element-plus'
 import type { ConnectionConfig } from '@renderer/stores/connection'
 import { useConnectionStore } from '@renderer/stores/connection'
+import { useI18n } from '@renderer/i18n'
 
 const props = defineProps<{ connection: ConnectionConfig }>()
 const emit = defineEmits<{ edit: [conn: ConnectionConfig]; delete: [id: string] }>()
 const connStore = useConnectionStore()
+const { t } = useI18n()
 
 const isActive = computed(() => connStore.activeId === props.connection.id)
 const isConn = computed(() => connStore.isConnectedById(props.connection.id))
@@ -15,6 +18,11 @@ const statusColor = computed(() => {
   return 'var(--text-muted)'
 })
 
+const COLOR_PRESETS = ['#6366f1', '#22c55e', '#f59e0b', '#ef4444', '#3b82f6', '#ec4899']
+const showColorPicker = ref(false)
+
+const assignedColor = computed(() => props.connection.color || '')
+
 function handleClick() {
   if (isConn.value) {
     if (isActive.value) {
@@ -26,14 +34,63 @@ function handleClick() {
     connStore.connect(props.connection)
   }
 }
+
+function cycleColor() {
+  if (!props.connection.color) {
+    setColor(COLOR_PRESETS[0])
+    return
+  }
+  const idx = COLOR_PRESETS.indexOf(props.connection.color)
+  if (idx === -1 || idx === COLOR_PRESETS.length - 1) {
+    setColor('')
+  } else {
+    setColor(COLOR_PRESETS[idx + 1])
+  }
+}
+
+function setColor(color: string) {
+  const updated = { ...props.connection, color: color || undefined }
+  connStore.saveConnection(updated)
+  showColorPicker.value = false
+}
+
+function selectColor(color: string) {
+  setColor(color)
+}
+
+async function handleDuplicate() {
+  const copy: ConnectionConfig = {
+    ...props.connection,
+    id: `${props.connection.id}_copy_${Date.now()}`,
+    name: `${props.connection.name} (copy)`,
+    order: Date.now(),
+    createdAt: Date.now(),
+  }
+  await connStore.saveConnection(copy)
+  ElMessage.success(t('connection.duplicated'))
+}
+
+// Drag events
+function onDragStart(e: DragEvent) {
+  if (e.dataTransfer) {
+    e.dataTransfer.setData('text/plain', props.connection.id)
+    e.dataTransfer.effectAllowed = 'move'
+  }
+}
 </script>
 
 <template>
   <div
     class="connection-card"
     :class="{ active: isActive, connecting: connStore.connecting && connStore.activeId === connection.id }"
+    :style="{
+      '--status-color': statusColor,
+      '--card-color': assignedColor || 'transparent',
+      'border-left': assignedColor ? `3px solid ${assignedColor}` : undefined,
+    }"
+    draggable="true"
     @click="handleClick"
-    :style="{ '--status-color': statusColor }"
+    @dragstart="onDragStart"
   >
     <div class="card-status" />
     <div class="card-body">
@@ -41,6 +98,32 @@ function handleClick() {
       <div class="card-host">{{ connection.host }}:{{ connection.port }}</div>
     </div>
     <div class="card-actions" @click.stop>
+      <!-- Color dot / picker -->
+      <div class="color-wrapper" @mouseenter="showColorPicker = true" @mouseleave="showColorPicker = false">
+        <button
+          class="card-btn color-dot"
+          :style="{ background: assignedColor || 'var(--text-muted)' }"
+          :title="t('connection.setColor')"
+          @click="cycleColor"
+        />
+        <div v-if="showColorPicker" class="color-dropdown">
+          <button
+            v-for="c in COLOR_PRESETS"
+            :key="c"
+            class="color-option"
+            :style="{ background: c }"
+            :class="{ active: assignedColor === c }"
+            @click="selectColor(c)"
+          />
+          <button
+            v-if="assignedColor"
+            class="color-option color-clear"
+            title="Clear"
+            @click="setColor('')"
+          >&#x2715;</button>
+        </div>
+      </div>
+      <button class="card-btn" :title="t('connection.duplicate')" @click="handleDuplicate">&#x1F4CB;</button>
       <button class="card-btn" title="Edit" @click="emit('edit', connection)">&#x270E;</button>
       <button class="card-btn card-btn-danger" title="Delete" @click="emit('delete', connection.id)">&#x2715;</button>
     </div>
@@ -111,6 +194,7 @@ function handleClick() {
   gap: 4px;
   opacity: 0;
   transition: opacity 0.15s;
+  align-items: center;
 }
 
 .connection-card:hover .card-actions {
@@ -140,4 +224,61 @@ function handleClick() {
   background: rgba(239, 68, 68, 0.15);
   color: var(--danger);
 }
+
+/* Color picker */
+.color-wrapper {
+  position: relative;
+  display: flex;
+  align-items: center;
+}
+
+.color-dot {
+  width: 14px !important;
+  height: 14px !important;
+  border-radius: 50% !important;
+  flex-shrink: 0;
+}
+
+.color-dropdown {
+  position: absolute;
+  top: 100%;
+  right: 0;
+  margin-top: 6px;
+  background: var(--bg-card);
+  border: 1px solid var(--border-color);
+  border-radius: var(--radius-sm);
+  padding: 6px;
+  display: flex;
+  gap: 4px;
+  z-index: 100;
+  box-shadow: var(--shadow-md);
+}
+
+.color-option {
+  width: 18px;
+  height: 18px;
+  border-radius: 50%;
+  border: 2px solid transparent;
+  cursor: pointer;
+  padding: 0;
+  transition: transform 0.15s;
+}
+
+.color-option:hover {
+  transform: scale(1.25);
+}
+
+.color-option.active {
+  border-color: var(--text-primary);
+}
+
+.color-clear {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 10px;
+  background: var(--bg-card-hover) !important;
+  color: var(--text-muted);
+  border-color: var(--border-color);
+}
 </style>
diff --git a/src/components/ConnectionList.vue b/src/components/ConnectionList.vue
index 31e4daf..7daf961 100644
--- a/src/components/ConnectionList.vue
+++ b/src/components/ConnectionList.vue
@@ -10,6 +10,7 @@ import type { ConnectionConfig } from '@renderer/stores/connection'
 const connStore = useConnectionStore()
 const { t } = useI18n()
 const searchQuery = ref('')
+const dragOverId = ref<string | null>(null)
 const emit = defineEmits<{ edit: [conn: ConnectionConfig | null] }>()
 
 const filteredConnections = computed(() => {
@@ -38,6 +39,40 @@ function handleNew() {
   emit('edit', null)
 }
 
+// Drag and drop reorder
+function onDragOver(e: DragEvent, id: string) {
+  e.preventDefault()
+  if (e.dataTransfer) {
+    e.dataTransfer.dropEffect = 'move'
+  }
+  dragOverId.value = id
+}
+
+function onDragLeave() {
+  dragOverId.value = null
+}
+
+async function onDrop(e: DragEvent, targetId: string) {
+  e.preventDefault()
+  dragOverId.value = null
+  const sourceId = e.dataTransfer?.getData('text/plain')
+  if (!sourceId || sourceId === targetId) return
+
+  const ids = connStore.connections
+    .slice()
+    .sort((a, b) => a.order - b.order)
+    .map(c => c.id)
+
+  const sourceIdx = ids.indexOf(sourceId)
+  const targetIdx = ids.indexOf(targetId)
+  if (sourceIdx === -1 || targetIdx === -1) return
+
+  ids.splice(sourceIdx, 1)
+  ids.splice(targetIdx, 0, sourceId)
+
+  await connStore.reorderConnections(ids)
+}
+
 async function handleExport() {
   try {
     const data = await connStore.exportConnections()
@@ -82,13 +117,21 @@ async function handleImport() {
       />
     </div>
     <div class="list-items">
-      <ConnectionCard
+      <div
         v-for="conn in filteredConnections"
         :key="conn.id"
-        :connection="conn"
-        @edit="handleEdit"
-        @delete="handleDelete"
-      />
+        class="drag-wrapper"
+        :class="{ 'drag-over': dragOverId === conn.id }"
+        @dragover="onDragOver($event, conn.id)"
+        @dragleave="onDragLeave"
+        @drop="onDrop($event, conn.id)"
+      >
+        <ConnectionCard
+          :connection="conn"
+          @edit="handleEdit"
+          @delete="handleDelete"
+        />
+      </div>
       <div v-if="filteredConnections.length === 0" class="list-empty">
         <p v-if="searchQuery">{{ t('connection.noMatch') }}</p>
         <p v-else>{{ t('connection.noConnections') }}</p>
@@ -157,6 +200,15 @@ async function handleImport() {
   padding: 40px 0;
 }
 
+.drag-wrapper {
+  transition: opacity 0.15s, transform 0.15s;
+}
+
+.drag-wrapper.drag-over {
+  opacity: 0.5;
+  transform: scale(0.97);
+}
+
 .list-footer {
   padding: 14px;
   border-top: 1px solid var(--border-color);
diff --git a/src/components/KeyList.vue b/src/components/KeyList.vue
index 93fec4a..c449885 100644
--- a/src/components/KeyList.vue
+++ b/src/components/KeyList.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/KeyList.vue
-import { ref, watch, computed } from 'vue'
+import { ref, watch, computed, onMounted, onUnmounted } from 'vue'
 import { useVirtualizer } from '@tanstack/vue-virtual'
 import { useKeyStore } from '@renderer/stores/key'
 import { useConnectionStore } from '@renderer/stores/connection'
@@ -19,6 +19,14 @@ const multiSelect = ref(false)
 const selectedKeys = ref<Set<string>>(new Set())
 const expandedFolders = ref<Set<string>>(new Set())
 
+// Right-click context menu
+const contextMenu = ref<{ visible: boolean; x: number; y: number; key: string }>({
+  visible: false, x: 0, y: 0, key: '',
+})
+
+// Shift+Click range selection
+const lastClickedIndex = ref<number>(-1)
+
 // Virtual scrolling
 const scrollRef = ref<HTMLElement>()
 const useVirtualization = computed(() => viewMode.value === 'list' && filteredKeys.value.length > 100)
@@ -103,8 +111,28 @@ async function refreshKeys() {
   await keyStore.scanKeys(connStore.activeId, '0', true)
 }
 
-async function selectKey(keyName: string) {
+async function selectKey(keyName: string, event?: MouseEvent) {
   if (!connStore.activeId) return
+
+  // Shift+Click range selection
+  if (event?.shiftKey && lastClickedIndex.value >= 0) {
+    const currentIndex = filteredKeys.value.indexOf(keyName)
+    if (currentIndex < 0) return
+    const start = Math.min(lastClickedIndex.value, currentIndex)
+    const end = Math.max(lastClickedIndex.value, currentIndex)
+
+    if (!multiSelect.value) {
+      multiSelect.value = true
+    }
+
+    for (let i = start; i <= end; i++) {
+      selectedKeys.value.add(filteredKeys.value[i])
+    }
+    return
+  }
+
+  lastClickedIndex.value = filteredKeys.value.indexOf(keyName)
+
   if (multiSelect.value) {
     if (selectedKeys.value.has(keyName)) {
       selectedKeys.value.delete(keyName)
@@ -260,6 +288,114 @@ function deselectAll() {
   keyStore.keyData = null
 }
 
+// Right-click context menu handlers
+function onKeyContextMenu(e: MouseEvent, keyName: string) {
+  e.preventDefault()
+  e.stopPropagation()
+  contextMenu.value = { visible: true, x: e.clientX, y: e.clientY, key: keyName }
+}
+
+function closeContextMenu() {
+  contextMenu.value.visible = false
+}
+
+async function copyKeyName(keyName: string) {
+  try {
+    await navigator.clipboard.writeText(keyName)
+    ElMessage.success(t('key.copied'))
+  } catch {
+    ElMessage.error('Failed to copy')
+  }
+  closeContextMenu()
+}
+
+async function deleteKeyContext(keyName: string) {
+  try {
+    await ElMessageBox.confirm(
+      t('key.deleteConfirm', { key: formatKeyName(keyName) }),
+      t('common.confirm'),
+      { confirmButtonText: t('common.delete'), cancelButtonText: t('common.cancel'), type: 'warning' }
+    )
+    if (connStore.activeId) {
+      await window.electronAPI.redis.deleteKey(connStore.activeId, keyName)
+      ElMessage.success(t('key.deleted'))
+      await refreshKeys()
+    }
+  } catch (err: any) {
+    if (err !== 'cancel') ElMessage.error(err.message)
+  }
+  closeContextMenu()
+}
+
+async function exportSingleKey(keyName: string) {
+  selectedKeys.value.add(keyName)
+  await exportKeys()
+  selectedKeys.value.delete(keyName)
+  closeContextMenu()
+}
+
+async function memoryUsage(keyName: string) {
+  if (!connStore.activeId) return
+  try {
+    const size = await window.electronAPI.redis.memoryUsage(connStore.activeId, keyName)
+    if (size !== null) {
+      ElMessage.success(t('key.memoryUsageResult', { size: size.toLocaleString() }))
+    } else {
+      ElMessage.info('Memory usage: N/A')
+    }
+  } catch {
+    ElMessage.error('Failed to get memory usage')
+  }
+  closeContextMenu()
+}
+
+async function copyValue(keyName: string) {
+  if (!connStore.activeId) return
+  try {
+    const value = await window.electronAPI.redis.getString(connStore.activeId, keyName)
+    if (value !== null) {
+      await navigator.clipboard.writeText(value)
+      ElMessage.success(t('key.copied'))
+    } else {
+      ElMessage.info('No value or not a string type')
+    }
+  } catch {
+    ElMessage.error('Failed to copy value')
+  }
+  closeContextMenu()
+}
+
+function selectAll() {
+  if (selectedKeys.value.size === filteredKeys.value.length) {
+    selectedKeys.value.clear()
+  } else {
+    for (const key of filteredKeys.value) {
+      selectedKeys.value.add(key)
+    }
+  }
+}
+
+// Document-level listeners for context menu
+function onDocumentClick() {
+  closeContextMenu()
+}
+
+function onDocumentKeyDown(e: KeyboardEvent) {
+  if (e.key === 'Escape') {
+    closeContextMenu()
+  }
+}
+
+onMounted(() => {
+  document.addEventListener('click', onDocumentClick)
+  document.addEventListener('keydown', onDocumentKeyDown)
+})
+
+onUnmounted(() => {
+  document.removeEventListener('click', onDocumentClick)
+  document.removeEventListener('keydown', onDocumentKeyDown)
+})
+
 function toggleFolder(path: string) {
   if (expandedFolders.value.has(path)) {
     expandedFolders.value.delete(path)
@@ -351,6 +487,23 @@ watch(filterText, () => {
 })
 
 defineExpose({ deselectAll })
+
+// Listen for refresh-key-list event from CLI write commands
+function onRefreshKeyList() {
+  if (connStore.activeId) {
+    keyStore.pattern = patternInput.value || '*'
+    keyStore.scanKeys(connStore.activeId, '0', true)
+    ElMessage.success(t('key.refreshedByCli'))
+  }
+}
+
+onMounted(() => {
+  window.addEventListener('refresh-key-list', onRefreshKeyList)
+})
+
+onUnmounted(() => {
+  window.removeEventListener('refresh-key-list', onRefreshKeyList)
+})
 </script>
 
 <template>
@@ -402,6 +555,17 @@ defineExpose({ deselectAll })
       <el-button size="small" @click="importKeys" :disabled="!connStore.activeId" class="import-btn">
         {{ t('key.importKeys') }}
       </el-button>
+      <div v-if="multiSelect" class="select-all-wrapper">
+        <label class="select-all-label" @click.prevent="selectAll">
+          <input
+            type="checkbox"
+            class="select-all-checkbox"
+            :checked="multiSelect && selectedKeys.size === filteredKeys.length && filteredKeys.length > 0"
+            :indeterminate="multiSelect && selectedKeys.size > 0 && selectedKeys.size < filteredKeys.length"
+          />
+          <span>{{ t('key.selectAll') }}</span>
+        </label>
+      </div>
       <el-button-group class="key-actions">
         <el-button size="small" @click="refreshKeys" :disabled="!connStore.activeId">
           <el-icon><Refresh /></el-icon>
@@ -466,7 +630,8 @@ defineExpose({ deselectAll })
                   active: isKeySelected(filteredKeys[vItem.index]),
                   selected: isKeyMultiSelected(filteredKeys[vItem.index]),
                 }"
-                @click="selectKey(filteredKeys[vItem.index])"
+                @click="selectKey(filteredKeys[vItem.index], $event)"
+                @contextmenu.prevent="onKeyContextMenu($event, filteredKeys[vItem.index])"
               >
                 <input
                   v-if="multiSelect"
@@ -491,7 +656,8 @@ defineExpose({ deselectAll })
               active: isKeySelected(keyName),
               selected: isKeyMultiSelected(keyName),
             }"
-            @click="selectKey(keyName)"
+            @click="selectKey(keyName, $event)"
+            @contextmenu.prevent="onKeyContextMenu($event, keyName)"
           >
             <input
               v-if="multiSelect"
@@ -523,7 +689,11 @@ defineExpose({ deselectAll })
             <span class="tree-count">{{ node.count }}</span>
           </div>
           <div v-else class="tree-children" :class="{ hidden: !isFolderExpanded(node.fullPath) }">
-            <div class="tree-item leaf-item" @click="selectKey(node.fullPath)">
+            <div
+              class="tree-item leaf-item"
+              @click="selectKey(node.fullPath, $event)"
+              @contextmenu.prevent="onKeyContextMenu($event, node.fullPath)"
+            >
               <span class="tree-spacer"></span>
               <el-icon class="tree-icon"><Document /></el-icon>
               <span class="tree-name">{{ formatKeyName(node.name) }}</span>
@@ -533,6 +703,37 @@ defineExpose({ deselectAll })
       </div>
     </div>
 
+    <!-- Right-click context menu -->
+    <div
+      v-if="contextMenu.visible"
+      class="key-context-menu"
+      :style="{ left: contextMenu.x + 'px', top: contextMenu.y + 'px' }"
+      @click.stop
+    >
+      <div class="key-context-item" @click="copyKeyName(contextMenu.key)">
+        <el-icon><CopyDocument /></el-icon>
+        <span>{{ t('key.copyKeyName') }}</span>
+      </div>
+      <div class="key-context-item" @click="copyValue(contextMenu.key)">
+        <el-icon><CopyDocument /></el-icon>
+        <span>{{ t('key.copyValue') }}</span>
+      </div>
+      <div class="key-context-divider" />
+      <div class="key-context-item" @click="memoryUsage(contextMenu.key)">
+        <el-icon><Odometer /></el-icon>
+        <span>{{ t('key.memoryUsage') }}</span>
+      </div>
+      <div class="key-context-item" @click="exportSingleKey(contextMenu.key)">
+        <el-icon><Download /></el-icon>
+        <span>{{ t('key.exportKeys') }}</span>
+      </div>
+      <div class="key-context-divider" />
+      <div class="key-context-item key-context-item-danger" @click="deleteKeyContext(contextMenu.key)">
+        <el-icon><Delete /></el-icon>
+        <span>{{ t('common.delete') }}</span>
+      </div>
+    </div>
+
     <div class="key-footer">
       <span class="key-count">{{ t('key.count', { n: keyStore.keys.length }) }}</span>
       <div class="key-footer-actions">
@@ -780,6 +981,86 @@ defineExpose({ deselectAll })
   align-items: center;
 }
 
+/* Right-click context menu */
+.key-context-menu {
+  position: fixed;
+  z-index: 9999;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-color);
+  border-radius: 6px;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
+  min-width: 160px;
+  padding: 4px 0;
+}
+
+.key-context-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 7px 14px;
+  font-size: 12px;
+  color: var(--text-primary);
+  cursor: pointer;
+  transition: background 0.12s;
+}
+
+.key-context-item:hover {
+  background: var(--bg-hover);
+  color: var(--accent-light);
+}
+
+.key-context-item-danger:hover {
+  color: var(--danger);
+}
+
+.key-context-divider {
+  height: 1px;
+  background: var(--border-color);
+  margin: 4px 8px;
+}
+
+.key-context-item .el-icon {
+  font-size: 14px;
+  color: var(--text-muted);
+}
+
+.key-context-item:hover .el-icon {
+  color: var(--accent-light);
+}
+
+.key-context-item-danger:hover .el-icon {
+  color: var(--danger);
+}
+
+/* Select All checkbox */
+.select-all-wrapper {
+  display: flex;
+  align-items: center;
+  flex-shrink: 0;
+}
+
+.select-all-label {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  font-size: 11px;
+  color: var(--text-muted);
+  cursor: pointer;
+  white-space: nowrap;
+  user-select: none;
+}
+
+.select-all-label:hover {
+  color: var(--text-primary);
+}
+
+.select-all-checkbox {
+  width: 13px;
+  height: 13px;
+  accent-color: var(--accent-light);
+  cursor: pointer;
+}
+
 /* Search History Dropdown */
 .pattern-input-wrapper {
   position: relative;
diff --git a/src/components/MainArea.vue b/src/components/MainArea.vue
index b2a70c4..2c99d15 100644
--- a/src/components/MainArea.vue
+++ b/src/components/MainArea.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/MainArea.vue
-import { ref, watch, computed, nextTick } from 'vue'
+import { ref, watch, computed, nextTick, onMounted, onUnmounted } from 'vue'
 import { useConnectionStore } from '@renderer/stores/connection'
 import { useI18n } from '@renderer/i18n'
 import StatusView from './StatusView.vue'
@@ -188,6 +188,19 @@ watch(
   },
   { deep: true }
 )
+
+// Listen for toggle-settings event from keyboard shortcut
+function onToggleSettings() {
+  emit('update:showSettings', !props.showSettings)
+}
+
+onMounted(() => {
+  window.addEventListener('toggle-settings', onToggleSettings)
+})
+
+onUnmounted(() => {
+  window.removeEventListener('toggle-settings', onToggleSettings)
+})
 </script>
 
 <template>
diff --git a/src/components/Sidebar.vue b/src/components/Sidebar.vue
index cc55fb8..7423f9b 100644
--- a/src/components/Sidebar.vue
+++ b/src/components/Sidebar.vue
@@ -52,10 +52,50 @@ function refreshAll() {
   }
 }
 
+function toggleSettings() {
+  window.dispatchEvent(new CustomEvent('toggle-settings'))
+}
+
+function clearCli() {
+  window.dispatchEvent(new CustomEvent('clear-cli'))
+}
+
+function saveKey() {
+  window.dispatchEvent(new CustomEvent('save-key'))
+}
+
+function showHotkeys() {
+  const shortcuts = [
+    { keys: 'Ctrl+N', desc: t('connection.new') },
+    { keys: 'Ctrl+R / F5', desc: t('common.refresh') },
+    { keys: 'Ctrl+G', desc: t('commandLog.title') },
+    { keys: 'Ctrl+,', desc: t('settings.title') },
+    { keys: 'Ctrl+S', desc: t('editor.save') },
+    { keys: 'Ctrl+L', desc: t('cli.title') + ' ' + t('commandLog.clear') },
+    { keys: 'Ctrl+/', desc: t('cli.hotkeys') },
+    { keys: 'Delete', desc: t('common.delete') },
+    { keys: 'Escape', desc: t('key.selectKey') },
+  ]
+  const html = `<div style="font-size:13px;line-height:2">
+    ${shortcuts.map(s => `<div style="display:flex;justify-content:space-between;padding:4px 0;border-bottom:1px solid var(--border-subtle)">
+      <span style="color:var(--text-secondary)">${s.desc}</span>
+      <kbd style="background:var(--bg-card);padding:2px 8px;border-radius:4px;font-family:monospace;font-size:12px;border:1px solid var(--border-color)">${s.keys}</kbd>
+    </div>`).join('')}
+  </div>`
+  ElMessageBox.alert(html, t('cli.hotkeysTitle'), {
+    dangerouslyUseHTMLString: true,
+    confirmButtonText: t('common.ok'),
+  })
+}
+
 useKeyboard({
   'ctrl+n': handleNew,
   'ctrl+r': refreshAll,
   'ctrl+g': () => { commandLogVisible.value = true },
+  'ctrl+,': toggleSettings,
+  'ctrl+s': saveKey,
+  'ctrl+l': clearCli,
+  'ctrl+/': showHotkeys,
   'f5': refreshAll,
   'delete': deleteSelectedKey,
   'escape': deselectKey,
diff --git a/src/components/StringEditor.vue b/src/components/StringEditor.vue
index 1e8c5a6..8fa041f 100644
--- a/src/components/StringEditor.vue
+++ b/src/components/StringEditor.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/StringEditor.vue
-import { ref, watch, computed } from 'vue'
+import { ref, watch, computed, onMounted, onUnmounted } from 'vue'
 import { VueMonacoEditor } from '@guolao/vue-monaco-editor'
 import { useKeyStore } from '@renderer/stores/key'
 import { useConnectionStore } from '@renderer/stores/connection'
@@ -129,6 +129,19 @@ async function save() {
     ElMessage.error(err.message)
   }
 }
+
+// Listen for save-key keyboard shortcut
+function onSaveKey() {
+  if (isEditing.value) save()
+}
+
+onMounted(() => {
+  window.addEventListener('save-key', onSaveKey)
+})
+
+onUnmounted(() => {
+  window.removeEventListener('save-key', onSaveKey)
+})
 </script>
 
 <template>
diff --git a/src/i18n/locales/en.ts b/src/i18n/locales/en.ts
index 27be39a..901226b 100644
--- a/src/i18n/locales/en.ts
+++ b/src/i18n/locales/en.ts
@@ -69,6 +69,9 @@ export default {
     testConnection: 'Test Connection',
     create: 'Create',
     save: 'Save',
+    duplicate: 'Duplicate',
+    setColor: 'Set Color',
+    duplicated: 'Connection duplicated',
   },
   key: {
     title: 'Keys',
@@ -112,6 +115,11 @@ export default {
     importFailed: 'Import failed: {error}',
     binaryKey: 'Binary Key',
     copyHex: 'Copy Hex',
+    copyKeyName: 'Copy Key Name',
+    copyValue: 'Copy Value',
+    memoryUsage: 'Memory Usage',
+    memoryUsageResult: 'Memory usage: {size} bytes',
+    selectAll: 'Select All',
   },
   types: {
     string: 'STRING',
@@ -189,6 +197,8 @@ export default {
     txPrompt: 'tx>',
     importCommands: 'Import Commands',
     importCmdDone: 'Executed {n} commands',
+    hotkeys: 'Hotkeys',
+    hotkeysTitle: 'Keyboard Shortcuts',
   },
   slowlog: {
     title: 'Slow Log',
diff --git a/src/i18n/locales/zh-CN.ts b/src/i18n/locales/zh-CN.ts
index d10d3d3..1e38d22 100644
--- a/src/i18n/locales/zh-CN.ts
+++ b/src/i18n/locales/zh-CN.ts
@@ -69,6 +69,9 @@ export default {
     testConnection: '测试连接',
     create: '创建',
     save: '保存',
+    duplicate: '复制连接',
+    setColor: '设置颜色',
+    duplicated: '连接已复制',
   },
   key: {
     title: '键',
@@ -112,6 +115,11 @@ export default {
     importFailed: '导入失败: {error}',
     binaryKey: '二进制键',
     copyHex: '复制 Hex',
+    copyKeyName: '复制键名',
+    copyValue: '复制值',
+    memoryUsage: '内存占用',
+    memoryUsageResult: '内存占用: {size} 字节',
+    selectAll: '全选',
   },
   types: {
     string: '字符串',
@@ -189,6 +197,8 @@ export default {
     txPrompt: 'tx>',
     importCommands: '导入命令',
     importCmdDone: '已执行 {n} 条命令',
+    hotkeys: '快捷键',
+    hotkeysTitle: '键盘快捷键',
   },
   slowlog: {
     title: '慢日志',
diff --git a/src/stores/connection.ts b/src/stores/connection.ts
index 0f188a0..2f0aec7 100644
--- a/src/stores/connection.ts
+++ b/src/stores/connection.ts
@@ -41,6 +41,7 @@ export const useConnectionStore = defineStore('connection', () => {
   const error = ref<string | null>(null)
   const serverInfoMap = ref<Record<string, string>>({})
   const healthMap = ref<Record<string, boolean>>({})
+  const currentDb = ref<number>(0)
   const healthTimers = new Map<string, ReturnType<typeof setInterval>>()
 
   const activeConnection = computed(() =>
@@ -273,7 +274,7 @@ export const useConnectionStore = defineStore('connection', () => {
   }
 
   return {
-    connections, activeId, connectedIds, connecting, error, serverInfo, healthOk,
+    connections, activeId, connectedIds, connecting, error, serverInfo, healthOk, currentDb,
     activeConnection, isConnected,
     loadConnections, decryptPassword, getInfo, saveConnection, deleteConnection, reorderConnections,
     connect, disconnect, disconnectById, switchTo, isConnectedById, testConnection, exportConnections, importConnections,