优化: 前端批(审批体系一致 + GitChanges UI + token/控件统一 + 死代码)

审批体系一致:ApprovalPopup 浮窗加挂起时长提示(H1)+session 按钮+path deny 二次确认(M4/M5);ToolCard/useToolApproval 加 session+onDeny 确认(对齐 DirAuthDialog 四按钮)+ToolCardList decision 类型加 session;ApprovalDialog 失败显 toast(治 store 吞错 M31);ApprovalOverlay dismiss 改响应式(L26)

GitChanges UI(问题12 前端 12b-12h):showCommitFileDiff 精确匹配(12b)+去重 git log(12c)+详情滑出不挤压(12d)+双行提交行(12f)+搜索过滤(12g)+历史 Tab 显分支(12h)+diff 侧边栏内更宽可折叠面板(12e:FilePreview 不支持任意提交 diff,折中)

token+控件:global.css 定义 --df-primary(治幽灵变量 M26)+settings.css 加 .setting-number/.setting-input/.setting-textarea+4 Section 套用(问题8)

死代码:删 PlanProgress.vue(零引用)+PlanLayerInfo 类型+i18n 孤儿 key(L1)

src/components/ai/ApprovalOverlay.vue

@@ -41,7 +41,7 @@
 </template>
 
 <script setup lang="ts">
-import { computed, ref, watch } from 'vue'
+import { computed, onUnmounted, ref, watch } from 'vue'
 import { useAiStore } from '@/stores/ai'
 
 const store = useAiStore()
@@ -57,18 +57,46 @@ const count = computed(() => store.state.pendingApprovals.length)
 const dismissedAt = ref<number>(0)
 const DISMISS_COOLDOWN_MS = 60_000
 
-// 显隐:有 pending + 未在冷却期
+// L26: 响应式时钟。原 visible 直接读 Date.now()(非响应式),computed 仅在 dismissedAt/count 变化时
+// 重算 → dismiss 满 60s 时无触发源,浮层不会自动重现。now 每秒翻一次驱动重算(60s 冷却期颗粒度足够,
+// 浮层非精确计时器)。仅在 dismissed 时跑定时器节省空转。
+const now = ref(Date.now())
+let _tickTimer: ReturnType<typeof setInterval> | null = null
+
+function startTick() {
+  if (_tickTimer) return
+  _tickTimer = setInterval(() => { now.value = Date.now() }, 1000)
+}
+function stopTick() {
+  if (_tickTimer) {
+    clearInterval(_tickTimer)
+    _tickTimer = null
+  }
+}
+
+// 显隐:有 pending + 未在冷却期(用响应式 now 替代裸 Date.now())
 const visible = computed(() => {
   if (count.value === 0) return false
-  if (dismissedAt.value && Date.now() - dismissedAt.value < DISMISS_COOLDOWN_MS) return false
+  if (dismissedAt.value && now.value - dismissedAt.value < DISMISS_COOLDOWN_MS) return false
   return true
 })
 
-// 审批清空时复位 dismiss(下次有新审批会重新弹)
-watch(count, (c) => {
-  if (c === 0) dismissedAt.value = 0
+// dismiss 启动时钟;冷却期到或审批清空时停时钟(避免无意义空转)
+watch(dismissedAt, (d) => {
+  if (d > 0) startTick()
+  else stopTick()
 })
 
+// 审批清空时复位 dismiss(下次有新审批会重新弹)+ 停时钟
+watch(count, (c) => {
+  if (c === 0) {
+    dismissedAt.value = 0
+    stopTick()
+  }
+})
+
+onUnmounted(() => stopTick())
+
 function onActivate() {
   emit('activate')
 }