模块介绍 / 今日规划 / 下班日报 / 团队摘要 生成成功后没有上报，也几乎不写「AI」日志。

流结束时的 usage 用了非阻塞发送，通道一满就被丢掉；很多服务商默认还不在流里带 usage。
现在每次真正打到模型的调用都会：

在本地日志（分类 AI，消息 AI 调用完成）写下 scene / prompt / completion / cached
登录后同步上报到后台日汇总

ai.go

@@ -258,9 +258,7 @@ func (a *App) runAIStream(ctx context.Context, provider ai.Provider, convID int6
 		a.emit("ai:stream", aiStreamEvent{ConversationID: convID, Error: e.Error(), Done: true})
 		return
 	}
-	if usage != nil {
-		go a.reportAIUsage(provider.Name(), usage.PromptTokens, usage.CompletionTokens, usage.Estimated)
-	}
+	a.recordAIUsage(provider.Name(), "chat", usage, msgs, sb.String())
 	a.store.TouchAIConversation(convID, provider.Name())
 	a.emit("ai:stream", aiStreamEvent{ConversationID: convID, Done: true, MessageID: m.ID})
 }
@@ -339,6 +337,21 @@ func (a *App) aiProvider() (ai.Provider, error) {
 	return ai.New(st.AIProvider, key)
 }
 
+// recordAIUsage 写入本地「AI」生成记录并上报云端日汇总。usage 为空时按消息粗估，避免生成成功却没有记录。
+func (a *App) recordAIUsage(provider, scene string, usage *ai.Usage, msgs []ai.Message, completion string) {
+	if usage == nil {
+		usage = ai.EstimateUsage(msgs, completion)
+	}
+	cache := "none"
+	if usage.CachedTokens > 0 {
+		cache = fmt.Sprintf("hit:%d", usage.CachedTokens)
+	}
+	a.store.Log("info", "AI", "AI 调用完成", fmt.Sprintf(
+		"scene=%s provider=%s prompt=%d completion=%d cached=%d cache=%s estimated=%v",
+		scene, provider, usage.PromptTokens, usage.CompletionTokens, usage.CachedTokens, cache, usage.Estimated))
+	go a.reportAIUsage(provider, usage.PromptTokens, usage.CompletionTokens, usage.CachedTokens, usage.Estimated)
+}
+
 // aiSummarySem 全局串行生成，避免批量分析后并发打爆免费额度接口。
 var aiSummarySem = make(chan struct{}, 1)
 
@@ -501,6 +514,7 @@ func (a *App) generateAISummaries(projectID int64, kinds ...string) {
 		// 无数据的全局简报直接落固定文案，不浪费一次注定编造的模型调用。
 		if content, ok := a.staticDayBrief(kind, st.Locale); ok {
 			if e := a.store.SaveAISummary(projectID, kind, "system", content); e == nil {
+				a.store.Log("info", "AI", "AI 调用完成", fmt.Sprintf("scene=summary:%s cache=local provider=system", kind))
 				a.emit("ai:summary", aiSummaryEvent{ProjectID: projectID, Kind: kind})
 			}
 			continue
@@ -518,8 +532,12 @@ func (a *App) generateAISummaries(projectID int64, kinds ...string) {
 			continue
 		}
 		var sb strings.Builder
+		var usage *ai.Usage
 		var streamErr error
 		for chunk := range stream {
+			if chunk.Usage != nil {
+				usage = chunk.Usage
+			}
 			if chunk.Err != nil {
 				streamErr = chunk.Err
 				break
@@ -536,6 +554,7 @@ func (a *App) generateAISummaries(projectID int64, kinds ...string) {
 			a.emit("ai:summary", aiSummaryEvent{ProjectID: projectID, Kind: kind, Error: msg})
 			continue
 		}
+		a.recordAIUsage(provider.Name(), "summary:"+kind, usage, msgs, sb.String())
 		if e := a.store.SaveAISummary(projectID, kind, provider.Name(), dedentCommon(stripFence(strings.TrimSpace(sb.String())))); e != nil {
 			a.store.Log("warning", "AI", "AI 模块介绍保存失败", e.Error())
 			continue