feat(aiAssistant): 添加全局 AI 智能客服小助手组件

- 在主布局中集成 AiAssistant 组件入口
- 实现悬浮客服入口按钮，可拖动并支持磁力吸边功能
- 开发可拖动的客服对话窗口，支持最小化与新对话功能
- 设计多分类问题导航及上下文相关专属建议栏
- 支持用户输入联想提示与实时消息流式渲染
- 实现消息复制、满意度反馈和快捷操作按钮功能
- 添加机器人思考中的动画提示及输入区快捷指令
- 编写符合主题颜色的样式，支持多种交互动效
- 构建常见问题及回答数据结构，支持关键词匹配与相关问题推荐

src/layouts/MainLayout.vue

@@ -11,11 +11,15 @@
         <CommonImportModal ref="globalImportModalRef" />
         <CommonUploadModal ref="globalUploadModalRef" />
         <CommonDownloadModal ref="globalDownloadModalRef" />
+
+        <!-- 全局 AI 智能客服小助手 -->
+        <AiAssistant />
     </div>
 </template>
 
 <script setup lang="ts">
 import { useAppStore } from '@/store/app/index'
+import AiAssistant from './components/AiAssistant/index.vue'
 
 const themeVars = useThemeVars()
 const appStore = useAppStore()

src/store/aiAssistant/index.ts

+import type { AiAssistantState, Position } from './types'
+import type { ChatMessage, FaqCategory } from '@/layouts/components/AiAssistant/constants'
+import { DEFAULT_WELCOME_MESSAGE, HOT_QUESTIONS } from '@/layouts/components/AiAssistant/constants'
+
+// 最大保留问答条数（约 4 轮问答对，超出自动修剪）
+const MAX_HISTORY_MESSAGES = 8
+
+export const useAiAssistantStore = defineStore('aiAssistant', {
+    state: (): AiAssistantState => ({
+        isOpen: false,
+        isMinimized: false,
+        unreadCount: 1,
+        activeCategory: 'all',
+        badgePos: { x: 0, y: 0 },
+        winPos: { x: 0, y: 0 },
+        messageList: [
+            {
+                id: 'msg_welcome',
+                sender: 'bot',
+                timestamp: now(),
+                content: DEFAULT_WELCOME_MESSAGE,
+                matchedFaqs: HOT_QUESTIONS
+            }
+        ]
+    }),
+    actions: {
+        setOpen(open: boolean) {
+            this.isOpen = open
+            if (open) {
+                this.unreadCount = 0
+            }
+        },
+        toggleMinimize() {
+            this.isMinimized = !this.isMinimized
+        },
+        setBadgePos(pos: Position) {
+            this.badgePos = pos
+        },
+        setWinPos(pos: Position) {
+            this.winPos = pos
+        },
+        setActiveCategory(category: FaqCategory) {
+            this.activeCategory = category
+        },
+        addMessage(msg: ChatMessage) {
+            this.messageList.push(msg)
+            // 自动修剪机制：保留欢迎语，其余对话最多保留最近 8 条（4 轮）
+            const nonWelcome = this.messageList.filter((m) => m.id !== 'msg_welcome')
+            if (nonWelcome.length > MAX_HISTORY_MESSAGES) {
+                const welcomeMsg = this.messageList.find((m) => m.id === 'msg_welcome')
+                const pruned = nonWelcome.slice(-MAX_HISTORY_MESSAGES)
+                this.messageList = welcomeMsg ? [welcomeMsg, ...pruned] : pruned
+            }
+        },
+        updateMessageFeedback(msgId: string, feedback: 'helpful' | 'unhelpful') {
+            const found = this.messageList.find((m) => m.id === msgId)
+            if (found) {
+                found.feedback = feedback
+            }
+        },
+        clearMessages() {
+            this.messageList = [
+                {
+                    id: 'msg_welcome',
+                    sender: 'bot',
+                    timestamp: now(),
+                    content: DEFAULT_WELCOME_MESSAGE,
+                    matchedFaqs: HOT_QUESTIONS
+                }
+            ]
+        }
+    },
+    persist: true
+})
+
+export * from './types'

src/store/aiAssistant/types.ts

+import type { ChatMessage, FaqCategory } from '@/layouts/components/AiAssistant/constants'
+
+export interface Position {
+    x: number
+    y: number
+}
+
+export interface AiAssistantState {
+    isOpen: boolean
+    isMinimized: boolean
+    unreadCount: number
+    activeCategory: FaqCategory
+    badgePos: Position
+    winPos: Position
+    messageList: ChatMessage[]
+}

src/views/editor/components/EditorToolbar/index.vue

@@ -575,6 +575,29 @@ const {
 const insertFragmentModalRef = ref<any>(null)
 const compareModalRef = ref<any>(null)
 const stashModalRef = ref<any>(null)
+
+// 注册 AI 客服快捷动作监听
+const eventBus = useEventBus()
+onMounted(() => {
+    eventBus.on('trigger_insert_table', () => handleInsert('TABLE'))
+    eventBus.on('trigger_insert_graphic', () => handleInsert('GRAPHIC'))
+    eventBus.on('trigger_insert_signoff', () => handleInsert('SIGNOFF'))
+    eventBus.on('trigger_insert_selection', () => handleInsert('SELECTION'))
+    eventBus.on('trigger_insert_template', () => handleInsert('TEMPLATE'))
+    eventBus.on('trigger_insert_fragment', () => insertFragmentModalRef.value?.open(insertBelow.value))
+    eventBus.on('trigger_import_xml', () => triggerUpload())
+    eventBus.on('trigger_export_xml', () => emit('export'))
+    eventBus.on('trigger_preview', () => emit('preview'))
+    eventBus.on('trigger_download_html', () => emit('download-html'))
+    eventBus.on('trigger_stash', () => stashModalRef.value?.open())
+    eventBus.on('trigger_batch_translate', () => handleTranslate('batch'))
+    eventBus.on('trigger_extract_translate', () => handleTranslate('extract'))
+    eventBus.on('trigger_search_translate', () => handleTranslate('search'))
+    eventBus.on('trigger_compare', () => compareModalRef.value?.open())
+    eventBus.on('trigger_open_settings', () => {
+        appStore.settingsOpen = true
+    })
+})
 </script>
 
 <style scoped>