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/i18n/en/aiChat.ts

@@ -112,12 +112,12 @@ export default {
     clearSkill: 'Clear skill',
     skillBadgeTip: 'Injected full skill playbook: {name}',
     placeholderWithSkill: 'Skill selected. Type arguments and press Enter',
-    placeholderDefault: "Type a message... (/ for skills, {'@'} to mention)",
+    placeholderDefault: "Type a message... (/ for skills, @ to mention)",
     skillNoMatch: 'No matching skill',
     skillNotLoaded: 'No local skills loaded',
 
     // ── @ entity mention (@ opens popover, select inserts [Type:Name] token) ──
-    mentionHint: "{'@'} to mention project/task",
+    mentionHint: "@ to mention project/task",
     mentionGroupProject: 'Projects',
     mentionGroupTask: 'Tasks',
     mentionGroupIdea: 'Ideas',
@@ -207,7 +207,7 @@ export default {
 
     // ── Input Augmentation layer: mention/skill injection feedback ──
     // search_files blind search denied by whitelist fallback (no auth dialog; prompt user to use @mention or absolute path)
-    searchFilesBlocked: "search_files only works inside authorized dirs. Use {'@'}[project] to reference or provide an absolute path.",
+    searchFilesBlocked: "search_files only works inside authorized dirs. Use @[project] to reference or provide an absolute path.",
     // /skill hot reload (ai_reload_skills IPC) success toast
     skillReloaded: 'Skills reloaded',
     // @mention entity resolve failed (id points to a project/task/idea/skill that was deleted or unavailable)
@@ -288,7 +288,7 @@ export default {
     // ── TopBar goal/project context labels ──
     goalsCount: 'Goals ({n})',
     none: 'None',
-    projectLabel: "{'@'}Projects",
+    projectLabel: "@Projects",
 
     // ── 3c UX batch addition (I5 classified send-failure messages): friendly text by
     //    error kind; {msg} keeps the raw error string for troubleshooting ──

src/i18n/en/aiTool.ts

@@ -15,6 +15,8 @@ export default {
     // tool execution failure marker (AR-6 keeps status=completed, red to distinguish from success)
     executionFailed: 'Failed',
     executionFailedHint: 'Tool execution failed, see details below',
+    // R6: click-to-copy full result path (hover title suffix)
+    clickToCopy: 'Click to copy full path',
     // Singular expand/collapse (ToolCard single-card content, command output toggle)
     expand: 'Expand',
     collapse: 'Collapse',

src/i18n/zh-CN/aiChat.ts

@@ -112,12 +112,12 @@ export default {
     clearSkill: '取消技能',
     skillBadgeTip: '已注入技能「{name}」的完整规程',
     placeholderWithSkill: '已选技能，输入参数后回车',
-    placeholderDefault: "输入消息...（/ 触发技能，{'@'} 引用实体）",
+    placeholderDefault: "输入消息...（/ 触发技能，@ 引用实体）",
     skillNoMatch: '无匹配技能',
     skillNotLoaded: '未读取到本机技能',
 
     // ── @ 实体引用(@ 触发 popover,选中插入 [类型:名] 标记) ──
-    mentionHint: "{'@'} 引用项目/任务",
+    mentionHint: "@ 引用项目/任务",
     mentionGroupProject: '项目',
     mentionGroupTask: '任务',
     mentionGroupIdea: '灵感',
@@ -208,7 +208,7 @@ export default {
 
     // ── Input Augmentation 层: mention/skill 注入反馈 ──
     // search_files 盲搜被白名单兜底拒绝(不应弹授权窗,直接友好提示用户改用 @引用或绝对路径)
-    searchFilesBlocked: "search_files 仅在已授权目录可用,请用 {'@'}[项目] 引用或提供绝对路径",
+    searchFilesBlocked: "search_files 仅在已授权目录可用,请用 @[项目] 引用或提供绝对路径",
     // /技能 热重载(ai_reload_skills IPC)成功后提示
     skillReloaded: '技能已重新加载',
     // @引用 实体 resolve 失败(id 指向的项目/任务/灵感/技能已被删除或不可用)
@@ -289,7 +289,7 @@ export default {
     // ── TopBar 目标/项目上下文标签 ──
     goalsCount: '目标({n})',
     none: '无',
-    projectLabel: "{'@'}项目",
+    projectLabel: "@项目",
 
     // ── 3c UX 批追加(I5 发送失败错误分类文案):按错误内容映射友好提示,
     //    {msg} 保留原始错误串供排查,不丢线索 ──

src/i18n/zh-CN/aiTool.ts

@@ -15,6 +15,8 @@ export default {
     // 工具执行失败视觉标识(AR-6 下 status=completed,需红色区分于成功)
     executionFailed: '执行失败',
     executionFailedHint: '工具执行失败,详情见下方',
+    // R6:工具结果路径可点击复制(hover title 后半段)
+    clickToCopy: '点击复制完整路径',
     collapse: '收起',
     expand: '展开',
     written: '已写入',