Version: 0.9.27.dev.260418

后端：
1. SSE 心跳保活——解决 Vite dev proxy 在 LLM thinking 静默期判 idle 断连
- api/agent.go：ChatAgent 新增 5 秒 heartbeat ticker，select 增加 heartbeat.C 分支，每 5 秒写入 SSE 注释行 : ping\n\n 并 Flush
- service/agentsvc/agent_newagent.go：graph 执行失败时增加 context.Canceled / requestCtx.Err() 判断，客户端断连只记 warn 不推 errChan 也不跑 fallback，消除 "错误通道已满" 日志噪音
2. 随口记工具（quick_note_create）接入新 Agent 链路
- agent/node/quicknote.go：parseOptionalDeadlineWithNow / quickNoteLocation 首字母大写导出，供新链路复用旧链路成熟的时间解析和时区能力
- agent/node/quicknote_tool.go：parseOptionalDeadline / quickNoteLocation 同步导出，补充调用目的注释
- newAgent/tools/quicknote.go：新增 QuickNoteToolHandler，实现新链路 quick_note_create 工具的参数校验、时间解析、写库调用
- newAgent/tools/registry.go：DefaultRegistryDeps 新增 QuickNote 字段；新增 RequiresScheduleState 方法和 scheduleFreeTools 集合；注册 quick_note_create 工具（不加入 writeTools，不走 confirm 确认）
- cmd/start.go：NewDefaultRegistryWithDeps 注入 QuickNote.CreateTask 闭包，捕获 taskRepo 实例写库
3. Execute 节点随口记 speak 清空 + 非 ScheduleState 工具支持
- newAgent/node/execute.go：新增非写工具 confirm→continue 自动降级逻辑；新增 quick_note_create speak 强制清空，收口统一交给 deliver，避免 execute + deliver 重复废话
- newAgent/node/execute.go：executeToolCall / executePendingTool 中 scheduleState nil 检查改为仅拦截 RequiresScheduleState 的工具；为不依赖 ScheduleState 的工具自动注入 _user_id 参数
- newAgent/prompt/execute.go：有 plan / ReAct 两套系统 prompt 中，"写操作"规则细化为"日程写操作"；新增 quick_note_create 专属执行规则：speak 必须留空，收口由 deliver 完成，调用成功后可 continue 处理多任务
- newAgent/prompt/chat.go：execute 路由描述补充"记录任务/提醒"场景

前端：
1. Vite dev proxy SSE 透传配置
- vite.config.ts：/api 代理新增 configure 回调，设置 x-accel-buffering: no 和 cache-control: no-cache，禁用代理缓冲
2.SSE 流式处理修复
- AssistantPanel.vue：reasoning_content 守卫放宽，移除 !assistantMessage.content.trim() 外层条件，正文回流后仍允许追加 reasoning（工具调用摘要、阶段状态等），不再吞掉 execute/deliver 的 reasoning_content
- AssistantPanel.vue：流式完成后跳过 loadConversationMessages，避免 persistVisibleMessage 尚未落库时 merge 产生重复或丢失

仓库:无

backend/agent/node/quicknote.go

@@ -215,7 +215,7 @@ func (n *QuickNoteNodes) Intent(ctx context.Context, st *agentmodel.QuickNoteSta
 	// 2.2 先尝试吃模型返回的 deadline_at，用于减少后续重复推理。
 	st.ExtractedDeadlineText = strings.TrimSpace(parsed.DeadlineAt)
 	if st.ExtractedDeadlineText != "" {
-		if deadline, deadlineErr := parseOptionalDeadlineWithNow(st.ExtractedDeadlineText, st.RequestNow); deadlineErr == nil {
+		if deadline, deadlineErr := ParseOptionalDeadlineWithNow(st.ExtractedDeadlineText, st.RequestNow); deadlineErr == nil {
 			st.ExtractedDeadline = deadline
 		}
 	}
@@ -296,7 +296,7 @@ func (n *QuickNoteNodes) Priority(ctx context.Context, st *agentmodel.QuickNoteS
 	st.ExtractedPriority = parsed.PriorityGroup
 	st.ExtractedPriorityReason = strings.TrimSpace(parsed.Reason)
 	if strings.TrimSpace(parsed.UrgencyThresholdAt) != "" {
-		urgencyThreshold, thresholdErr := parseOptionalDeadlineWithNow(strings.TrimSpace(parsed.UrgencyThresholdAt), st.RequestNow)
+		urgencyThreshold, thresholdErr := ParseOptionalDeadlineWithNow(strings.TrimSpace(parsed.UrgencyThresholdAt), st.RequestNow)
 		if thresholdErr == nil {
 			st.ExtractedUrgencyThreshold = normalizeUrgencyThreshold(urgencyThreshold, st.ExtractedDeadline)
 		}
@@ -328,11 +328,11 @@ func (n *QuickNoteNodes) Persist(ctx context.Context, st *agentmodel.QuickNoteSt
 
 	deadlineText := ""
 	if st.ExtractedDeadline != nil {
-		deadlineText = st.ExtractedDeadline.In(quickNoteLocation()).Format(time.RFC3339)
+		deadlineText = st.ExtractedDeadline.In(QuickNoteLocation()).Format(time.RFC3339)
 	}
 	urgencyThresholdText := ""
 	if st.ExtractedUrgencyThreshold != nil {
-		urgencyThresholdText = st.ExtractedUrgencyThreshold.In(quickNoteLocation()).Format(time.RFC3339)
+		urgencyThresholdText = st.ExtractedUrgencyThreshold.In(QuickNoteLocation()).Format(time.RFC3339)
 	}
 
 	toolInput := QuickNoteCreateTaskToolInput{
@@ -430,12 +430,12 @@ func planQuickNoteInSingleCall(ctx context.Context, chatModel *ark.ChatModel, no
 		}
 	}
 	if result.DeadlineText != "" {
-		if deadline, deadlineErr := parseOptionalDeadlineWithNow(result.DeadlineText, now); deadlineErr == nil {
+		if deadline, deadlineErr := ParseOptionalDeadlineWithNow(result.DeadlineText, now); deadlineErr == nil {
 			result.Deadline = deadline
 		}
 	}
 	if result.UrgencyThresholdText != "" {
-		if urgencyThreshold, thresholdErr := parseOptionalDeadlineWithNow(result.UrgencyThresholdText, now); thresholdErr == nil {
+		if urgencyThreshold, thresholdErr := ParseOptionalDeadlineWithNow(result.UrgencyThresholdText, now); thresholdErr == nil {
 			result.UrgencyThreshold = normalizeUrgencyThreshold(urgencyThreshold, result.Deadline)
 		}
 	}