优化: 前端u-agent令牌对齐与组件拆分续批

- 全局样式类(df-sec-h/df-toast族)替换散装实现,主题token去硬编码兜底
- 拆分子组件:ai-chat/queue-panel(队列时钟与编辑随迁)、
  conversation-sidebar/ConversationList、settings/provider-panel
- 父组件死副本清理(队列编辑/时钟/键位表,TS6133清零)并补
  fill-draft父侧转发(重构半成品断链修复)
- 验收:vue-tsc EXIT 0

src/components/ai-chat/shortcuts-overlay.vue

@@ -0,0 +1,117 @@
+<template>
+  <!-- I12(2026-10-05):键盘快捷键速查。Teleport 到 body 防 .ai-panel overflow 裁剪;
+       主窗/分离窗各自实例独立渲染,入口在 TopBar ... 菜单(emit show-shortcuts)。
+       C4b 拆分自 AiChat.vue(visible 状态留父——onGlobalKeydown Esc 仲裁需读写,开/关经 props/emits) -->
+  <Teleport to="body">
+    <div v-if="visible" class="ai-shortcuts-mask" @click.self="emit('close')">
+      <div class="ai-shortcuts-panel" role="dialog" :aria-label="t('aiChat.shortcutsTitle')">
+        <div class="ai-shortcuts-head">
+          <span class="ai-shortcuts-title">{{ t('aiChat.shortcutsTitle') }}</span>
+          <button class="ai-shortcuts-close" :aria-label="t('aiChat.scCloseOverlay')" @click="emit('close')">✕</button>
+        </div>
+        <ul class="ai-shortcuts-list">
+          <li v-for="s in shortcuts" :key="s.key" class="ai-shortcuts-row">
+            <span class="ai-shortcuts-key">{{ s.key }}</span>
+            <span class="ai-shortcuts-act">{{ s.label }}</span>
+          </li>
+        </ul>
+      </div>
+    </div>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+defineProps<{
+  /** 面板显隐(状态留父:TopBar emit show-shortcuts 置 true,onGlobalKeydown Esc 分支仲裁) */
+  visible: boolean
+}>()
+
+const emit = defineEmits<{
+  (e: 'close'): void
+}>()
+
+const { t } = useI18n()
+
+// 键位表 shortcuts 与父 AiChat onGlobalKeydown 同族——键区调整时两边同步,防速查与真实键位漂移。
+// computed:随 locale 即时翻译(仅面板打开时消费,开销可忽略)。
+const shortcuts = computed(() => [
+  { key: 'Ctrl+N', label: t('aiChat.scNewConv') },
+  { key: 'Ctrl+I', label: t('aiChat.scFocusInput') },
+  { key: 'Ctrl+R', label: t('aiChat.scRegenerate') },
+  { key: 'Ctrl+L', label: t('aiChat.scClearChat') },
+  { key: 'Ctrl+K', label: t('aiChat.scSearch') },
+  { key: 'Ctrl+B', label: t('aiChat.scToggleSidebar') },
+  { key: 'Esc', label: t('aiChat.scCloseOverlay') },
+])
+</script>
+
+<style scoped>
+/* ═══ I12 快捷键速查面板(Teleport 到 body,scoped 对 Teleport 内容仍生效——
+   Vue scoped 把 data 属性打在编译期节点上,与挂载位置无关;样式随区块自 AiChat.vue 迁入) ═══ */
+.ai-shortcuts-mask {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.4);
+  z-index: 1000;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+.ai-shortcuts-panel {
+  background: var(--df-bg-card);
+  border: 0.5px solid var(--df-border);
+  border-radius: var(--df-radius-lg, 8px);
+  box-shadow: var(--df-shadow-sm);
+  width: 320px;
+  max-width: calc(100vw - 48px);
+  padding: 14px 16px;
+}
+.ai-shortcuts-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 10px;
+}
+.ai-shortcuts-title {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--df-text);
+}
+.ai-shortcuts-close {
+  background: transparent;
+  border: none;
+  color: var(--df-text-secondary);
+  cursor: pointer;
+  font-size: 12px;
+  padding: 2px 4px;
+  border-radius: 4px;
+}
+.ai-shortcuts-close:hover { color: var(--df-text); background: var(--df-bg-card); }
+.ai-shortcuts-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+.ai-shortcuts-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  font-size: 12px;
+}
+.ai-shortcuts-key {
+  font-family: var(--df-font-mono);
+  font-size: 11px;
+  background: var(--df-bg-card);
+  border: 0.5px solid var(--df-border);
+  border-radius: 4px;
+  padding: 2px 8px;
+  color: var(--df-text);
+}
+.ai-shortcuts-act { color: var(--df-text-secondary); }
+</style>