新增: aichat前端体验四件与队列残留收口

- R4 代码块语言角标:MessageList decorateCodeHtml 捕获 language-xxx 输出 data-lang+CSS ::before 左上角标,hover 显,无语言裸块不渲染
- R6 工具结果路径可复制:ToolResultBody 五处 file-bar 的 path span→button(read_file/list_directory/search_files/grep/patch_file),点击复制完整路径+✓/✕ 1.2s 反馈+execCommand 降级链
- I6 重新生成 UI 入口:MessageItem user 气泡 hover 补重新生成按钮(canRegenerate=isLastUser&&非流式),复用 handleRetry→store.regenerate 链路
- V4 浮窗审批 High 风险二次确认:useToolApproval 导出 isHighRiskTool/highRiskConfirmText,ApprovalPopup.onApprove 前置 ConfirmDialog,数字键守卫不绕确认
- 9-28#5 两处全局清队列残留:useAiEvents/useAiLifecycleEvents 无 convId 的 AiError 分支改保留队列+console.warn(防误伤其他会话排队消息)
- i18n zh/en 补 clickToCopy 键;裸 @ 改 @ 转义(vue-i18n linked-message 前缀吞噬)

src/composables/ai/useAiEvents.ts

@@ -225,10 +225,12 @@ export function handleEvent(event: AiChatEvent) {
       if (event.type === 'AiCompleted') {
         emit('ai-drain-queue', { conversationId: event.conversation_id })
       } else if (event.type === 'AiError') {
+        // 9-28#5 收口:无 convId 的 AiError 属异常防御路径(后端 emit 必带),清全部队列
+        // 会误伤其他会话排队消息,改保留 + console.warn 留痕
         if (event.conversation_id) {
           state.queue = state.queue.filter(q => q.conversationId !== event.conversation_id)
         } else {
-          state.queue = []
+          console.warn('[ai] AiError 缺 conversation_id,跳过清队列(防误伤其他会话排队)')
         }
       }
     } else if (event.type === 'AiTextDelta' && convId && switchingConvs.has(convId)) {

src/composables/ai/useAiLifecycleEvents.ts

@@ -208,8 +208,9 @@ export function handleLifecycleEvent(event: AiChatEvent): boolean {
         state.queue = state.queue.filter(q => q.conversationId !== event.conversation_id)
         notifyQueueCleared(dropped)
       } else {
-        notifyQueueCleared(state.queue.length)
-        state.queue = []
+        // 9-28#5 收口:无 convId 的 AiError 属异常防御路径(后端 emit 必带),清全部队列
+        // 会误伤其他会话排队消息,改保留 + console.warn 留痕(不再弹「已清 N 条」误导用户)
+        console.warn('[ai] AiError 缺 conversation_id,跳过清队列(防误伤其他会话排队)')
       }
       state.messages.push({
         id: `err-${nextMsgId()}` as MessageId,

src/composables/ai/useToolApproval.ts

@@ -9,6 +9,7 @@
  */
 import { ref, reactive, computed, watch, onBeforeUnmount, type Ref } from 'vue'
 import { useI18n } from 'vue-i18n'
+import i18n from '@/i18n'
 import { useConfirm } from '@/composables/useConfirm'
 import { aiApi } from '@/api'
 import { getApprovalRemainingMs } from './aiShared'
@@ -47,8 +48,9 @@ export function syncHighRiskTools(tools: { name: string; risk: string }[]): void
   if (high.length > 0) registryHighRisk = new Set(high)
 }
 
-/** 审批二次确认门控:优先注册表投影,未拉到元数据时退兜底名单 */
-function isHighRiskTool(name: string): boolean {
+/** 审批二次确认门控:优先注册表投影,未拉到元数据时退兜底名单。
+ *  V4 导出:系统浮窗 ApprovalPopup 的批准路径与 ToolCard 同门槛复用。 */
+export function isHighRiskTool(name: string): boolean {
   return (registryHighRisk ?? HIGH_RISK_TOOLS_FALLBACK).has(name)
 }
 
@@ -80,6 +82,21 @@ export function dispatchApprovalIPC(
   return aiApi.approve(tc.id, approved)
 }
 
+/** V4:High 风险工具二次确认文案(模块级,供 ApprovalPopup 在无组件上下文复用;
+ *  i18n 全局实例取 t,与 useI18n 同源 locale) */
+export function highRiskConfirmText(name: string): string {
+  // i18n.global 整体访问触发 vue-i18n 泛型递归 TS2589,先断言窄化再取 t
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const g = i18n.global as any
+  const gt = g.t as (key: string) => string
+  if (name === 'run_command') return gt('aiTool.confirmHighExec')
+  if (name === 'http_request') return gt('aiTool.confirmHighHttp')
+  if (name === 'delete_task' || name === 'delete_project' || name === 'purge_project' || name === 'delete_file' || name === 'restore_project') {
+    return gt('aiTool.confirmHighDelete')
+  }
+  return gt('aiTool.confirmHighGeneric')
+}
+
 /** useToolApproval emit 签名 — 补全类型替代 any */
 interface ToolApprovalEmit {
   (event: 'approve', payload: { id: string; approved: boolean; decision?: 'once' | 'session' | 'always' | 'deny' }): void
@@ -145,14 +162,9 @@ export function useToolApproval(tc: Ref<AiToolCallInfo>, emit: ToolApprovalEmit)
     _approveToastTimer = setTimeout(() => { approveToast.visible = false }, 3000)
   }
 
-  /** High 风险工具的二次确认文案(按操作类型) */
+  /** High 风险工具的二次确认文案(按操作类型;V4 提升为模块级导出,浮窗复用) */
   function highRiskConfirmMsg(name: string): string {
-    if (name === 'run_command') return t('aiTool.confirmHighExec')
-    if (name === 'http_request') return t('aiTool.confirmHighHttp')
-    if (name === 'delete_task' || name === 'delete_project' || name === 'purge_project' || name === 'delete_file' || name === 'restore_project') {
-      return t('aiTool.confirmHighDelete')
-    }
-    return t('aiTool.confirmHighGeneric')
+    return highRiskConfirmText(name)
   }
 
   /**