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/components/ToolResultBody.vue

@@ -6,7 +6,7 @@
   <div v-if="tc.name === 'read_file' && tc.result && tc.status === 'completed' && parsed" class="ai-tool-file-content">
     <div class="ai-tool-file-bar">
       <span class="ai-tool-file-icon" v-html="fileIcon"></span>
-      <span class="ai-tool-file-path" :title="parsed?.path">{{ shortPath(parsed?.path || '') }}</span>
+      <button type="button" class="ai-tool-file-path ai-tool-file-path--copy" :title="parsed?.path + ' — ' + $t('aiTool.clickToCopy')" @click.stop="copyResultPath($event, parsed?.path || '')">{{ shortPath(parsed?.path || '') }}</button>
       <!-- BUG-260625-02: search 模式返回 matches(命中行)非 content,
            旧模板取 lines/returned_lines 显「0 行」+ 空 content 区,用户误以为读取失败。
            search 模式显搜索词 + 命中数(复用 grepHitsN 文案);默认模式显行数/大小 + 展开。 -->
@@ -36,7 +36,7 @@
   <div v-else-if="tc.name === 'list_directory' && tc.result && tc.status === 'completed' && parsed" class="ai-tool-dir-list">
     <div class="ai-tool-file-bar">
       <span class="ai-tool-file-icon ai-tool-file-icon--dir" v-html="dirIcon"></span>
-      <span class="ai-tool-file-path" :title="parsed?.path">{{ shortPath(parsed?.path || '') }}</span>
+      <button type="button" class="ai-tool-file-path ai-tool-file-path--copy" :title="parsed?.path + ' — ' + $t('aiTool.clickToCopy')" @click.stop="copyResultPath($event, parsed?.path || '')">{{ shortPath(parsed?.path || '') }}</button>
       <span class="ai-tool-file-meta">{{ parsed?.entries?.length || 0 }} {{ $t('aiTool.items') }}</span>
       <span v-if="parsed?.truncated" class="ai-tool-file-meta ai-tool-file-meta--warn">{{ $t('aiTool.dirTruncated', { n: DIR_TRUNCATE_LIMIT }) }}</span>
     </div>
@@ -59,7 +59,7 @@
   <div v-else-if="tc.name === 'search_files' && tc.result && tc.status === 'completed' && parsed" class="ai-tool-dir-list">
     <div class="ai-tool-file-bar">
       <span class="ai-tool-file-icon ai-tool-file-icon--dir" v-html="dirIcon"></span>
-      <span class="ai-tool-file-path" :title="parsed?.path">{{ shortPath(parsed?.path || '') }}</span>
+      <button type="button" class="ai-tool-file-path ai-tool-file-path--copy" :title="parsed?.path + ' — ' + $t('aiTool.clickToCopy')" @click.stop="copyResultPath($event, parsed?.path || '')">{{ shortPath(parsed?.path || '') }}</button>
       <span v-if="parsed?.pattern" class="ai-tool-file-meta">「{{ parsed?.pattern }}」</span>
       <span class="ai-tool-file-meta">{{ $t('aiTool.foundN', { n: typeof parsed?.total === 'number' ? parsed.total : (parsed?.results?.length || 0) }) }}</span>
     </div>
@@ -77,7 +77,7 @@
   <div v-else-if="tc.name === 'grep' && tc.result && tc.status === 'completed' && parsed" class="ai-tool-grep-result">
     <div class="ai-tool-file-bar">
       <span class="ai-tool-file-icon" v-html="searchIcon"></span>
-      <span class="ai-tool-file-path" :title="parsed?.path">{{ shortPath(parsed?.path || '') }}</span>
+      <button type="button" class="ai-tool-file-path ai-tool-file-path--copy" :title="parsed?.path + ' — ' + $t('aiTool.clickToCopy')" @click.stop="copyResultPath($event, parsed?.path || '')">{{ shortPath(parsed?.path || '') }}</button>
       <span v-if="parsed?.pattern" class="ai-tool-file-meta">「{{ parsed?.pattern }}」</span>
       <span class="ai-tool-file-meta">{{ grepHitLabel }}</span>
       <span v-if="parsed?.truncated" class="ai-tool-file-meta ai-tool-file-meta--warn">{{ $t('aiTool.grepTruncated') }}</span>
@@ -125,7 +125,7 @@
   <div v-else-if="tc.name === 'patch_file' && tc.result && tc.status === 'completed' && parsed" class="ai-tool-patch-result">
     <div class="ai-tool-file-bar">
       <span class="ai-tool-file-icon" v-html="fileIcon"></span>
-      <span class="ai-tool-file-path" :title="parsed?.path">{{ shortPath(parsed?.path || '') }}</span>
+      <button type="button" class="ai-tool-file-path ai-tool-file-path--copy" :title="parsed?.path + ' — ' + $t('aiTool.clickToCopy')" @click.stop="copyResultPath($event, parsed?.path || '')">{{ shortPath(parsed?.path || '') }}</button>
       <span class="ai-tool-file-meta">{{ formatSizeDiff(parsed?.size_diff) }} {{ $t('aiTool.bytesUnit') }}</span>
       <span v-if="parsed?.matches_found && parsed.matches_found > 1" class="ai-tool-file-meta">{{ $t('aiTool.patchedMatches', { n: parsed.matches_found }) }}</span>
     </div>
@@ -257,6 +257,39 @@ const emit = defineEmits<{
   'install-obscura': []
 }>()
 
+// ── R6 结果路径可复制 ──
+// AI 读过/写过的文件,用户想拿去本地操作(编辑器打开/再 grep)只能手动重敲路径。
+// file-bar 的 path 改为可点击:复制完整路径(parsed.path 原文,非 shortPath 截断展示),
+// 按钮文字短暂变「✓」作反馈(1.2s 还原,同 R4 代码块复制反馈节奏)。
+let _pathCopiedTimer: ReturnType<typeof setTimeout> | null = null
+async function copyResultPath(e: MouseEvent, path: string): Promise<void> {
+  if (!path) return
+  const btn = e.currentTarget as HTMLButtonElement | null
+  let ok = false
+  try {
+    if (navigator.clipboard?.writeText) {
+      await navigator.clipboard.writeText(path)
+      ok = true
+    }
+  } catch { /* 落 execCommand 兜底 */ }
+  if (!ok) {
+    const ta = document.createElement('textarea')
+    ta.value = path
+    ta.style.position = 'fixed'
+    ta.style.opacity = '0'
+    document.body.appendChild(ta)
+    ta.select()
+    try { ok = document.execCommand('copy') } catch { ok = false }
+    document.body.removeChild(ta)
+  }
+  if (btn) {
+    const prev = btn.textContent
+    btn.textContent = ok ? '✓' : '✕'
+    if (_pathCopiedTimer) clearTimeout(_pathCopiedTimer)
+    _pathCopiedTimer = setTimeout(() => { btn.textContent = prev }, 1200)
+  }
+}
+
 // run_command 输出折叠态:失败命令默认展开(便于看 stderr),成功默认折叠
 const cmdOutputExpanded = ref(false)
 // http_request 响应 body 折叠态:失败(非 2xx)默认展开便于看错误,成功默认折叠
@@ -403,6 +436,14 @@ watch(() => props.tc.status, (s) => {
 .ai-tool-file-meta--warn {
   color: var(--df-warning);
 }
+/* R6:路径可点击复制(按钮语义,视觉保持原 span 形态;hover 变 accent 提示可点) */
+.ai-tool-file-path--copy {
+  cursor: pointer;
+  transition: color 0.15s var(--df-ease);
+}
+.ai-tool-file-path--copy:hover {
+  color: var(--df-accent);
+}
 
 /* grep 结果文件栏复用 ai-tool-file-bar,命中行用等宽渲染 */
 .ai-tool-grep-result {