修复: 对话轨迹生成锚点回归与耗时口径

生成中锚点改真实末条,修第二轮打字机与工具卡不渲染回归
轨迹总耗时计入末轮时长,单卡耗时剔除审批等待区间
聚合文案与截断常量下沉共用,时长进位边界钳制

src/components/ai/MessageList.vue

@@ -21,7 +21,7 @@ import { useMarkdown } from '../../composables/useMarkdown'
 import { useMessageScroll } from '../../composables/ai/useMessageScroll'
 import { useStreamRenderer } from '../../composables/ai/useStreamRenderer'
 import { loadMoreHistory, getLoadMoreState } from '../../composables/ai/useAiConversations'
-import { collectTurnStats, statsTail, formatDuration, type TurnCallStats } from '../../composables/ai/useTurnTrace'
+import { collectTurnStats, aggText, type TurnCallStats } from '../../composables/ai/useTurnTrace'
 import ToolCardList from '../ToolCardList.vue'
 import MessageItem from './MessageItem.vue'
 import EmptyState from './EmptyState.vue'
@@ -741,15 +741,9 @@ function toggleTrace(key: string): void {
   expandedTraceIds.value = next
 }
 
-/** 轨迹卡聚合行:「N 次调用 · 成功 x 失败 y · 总耗时 T」(零值段省略;无工具调用显「过程记录」) */
+/** 轨迹卡聚合行:「N 次调用 · 成功 x 失败 y · 总耗时 T」(拼装统一走 useTurnTrace.aggText) */
 function traceAggText(stats: TurnCallStats, startTs: number, endTs: number): string {
-  const parts: string[] = []
-  parts.push(stats.total > 0 ? t('ai.trace.calls', { n: stats.total }) : t('ai.trace.processOnly'))
-  const tail = statsTail(stats)
-  if (tail) parts.push(tail)
-  const dur = formatDuration(endTs - startTs)
-  if (dur) parts.push(t('ai.trace.duration', { time: dur }))
-  return parts.join(' · ')
+  return aggText(stats, endTs - startTs)
 }
 
 /** 轨迹卡 hover:绝对起止时刻(相对时长之外可溯源具体时间) */
@@ -793,6 +787,18 @@ const renderItems = computed<RenderItem[]>(() => {
     const msgs = bucket.filter(shouldRenderMsg)
     bucket = []
     if (msgs.length === 0) return
+
+    if (isViewingGenerating.value) {
+      // 执行中:当前步骤锚定真实末条消息(agentic 新一轮 push 新空气泡,若按「末条有正文」
+      // 找锚点会错挂上一轮,致当前轮打字机/光标/工具卡整条不渲染);先前步骤收进一行实时摘要
+      const cur = msgs[msgs.length - 1]
+      const prev = msgs.slice(0, -1)
+      if (prev.length > 0) {
+        items.push({ kind: 'step', key: 'step-' + prev[0].id, stats: collectTurnStats(prev) })
+      }
+      items.push({ kind: 'msg', key: 'm-' + cur.id, msg: cur })
+      return
+    }
     // 最终答复:末条有正文且非纯 JSON 工具结果的消息;全无正文时保底末条(工具轮可见)
     let fi = -1
     for (let i = msgs.length - 1; i >= 0; i--) {
@@ -801,24 +807,22 @@ const renderItems = computed<RenderItem[]>(() => {
     }
     const finalMsg = fi >= 0 ? msgs[fi] : msgs[msgs.length - 1]
     const traceMsgs = msgs.slice(0, msgs.indexOf(finalMsg))
-
-    if (isViewingGenerating.value) {
-      // 执行中:先前步骤收进一行实时摘要,仅当前步骤(末条)展开
-      if (traceMsgs.length > 0) {
-        items.push({ kind: 'step', key: 'step-' + traceMsgs[0].id, stats: collectTurnStats(traceMsgs) })
-      }
-      items.push({ kind: 'msg', key: 'm-' + finalMsg.id, msg: finalMsg })
-      return
-    }
     // 完成:轨迹折叠为一张卡,展开时再 emit 段内过程消息(与归档分段同一扁平化模式)
     if (traceMsgs.length > 0) {
       const key = 'trace-' + traceMsgs[0].id
       const expanded = expandedTraceIds.value.has(key)
+      // 终点计入末轮时长:过程消息里最晚的工具完成时刻与末轮开始时刻取较大者
+      let lastCompleted = 0
+      for (const m of traceMsgs) {
+        for (const tc of m.toolCalls || []) {
+          if (tc.completedAt && tc.completedAt > lastCompleted) lastCompleted = tc.completedAt
+        }
+      }
       items.push({
         kind: 'trace', key,
         stats: collectTurnStats(traceMsgs),
         startTs: traceMsgs[0].timestamp,
-        endTs: finalMsg.timestamp,
+        endTs: Math.max(lastCompleted, finalMsg.timestamp),
         traceMsgs, expanded,
       })
       if (expanded) {