Version: 0.9.47.dev.260427

后端：
1. execute 节点继续拆职责——超大 execute.go 下沉为 node/execute 子包，按决策流、动作路由、上下文锚点、工具执行、状态快照、工具展示与参数解析拆分；顶层 execute.go 收敛为桥接导出，降低单文件编排/业务/模型/工具逻辑混写
2. 节点公共能力继续沉到 shared——抽出 LLM 纠错回灌、完整上下文调试日志、thinking 开关、统一上下文压缩、可见 assistant 文本持久化等 node_* 公共件，减少 execute 独占实现并为其他节点复用铺路
3. speak 文本整理能力独立收口——新增 speak_text 辅助文件，补齐正文归一化的独立承载，继续收缩 execute 主文件体积

前端：
4. NewAgent 时间线接入 business_card 业务卡片协议——schedule_agent.ts 新增 task_query / task_record 卡片载荷类型与 business_card kind；AssistantPanel 增加业务卡片事件存储、时间线恢复、块渲染分支与 BusinessCardRenderer 接入，同时保留 interrupt / status / tool / reasoning 多块并存
5. 新增任务查询卡片与任务记录卡片组件，并补充 DesignDemo 设计预览页与路由，前端可先行验证 business_card 的视觉与交互落点

文档：
6. 新增 newagent business card 前后端对接说明，明确 timeline kind、payload 结构、卡片分类、前后端发射/渲染约束

backend/newAgent/node/execute/context.go

@@ -0,0 +1,157 @@
+package newagentexecute
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	newagentmodel "github.com/LoveLosita/smartflow/backend/newAgent/model"
+	newagentstream "github.com/LoveLosita/smartflow/backend/newAgent/stream"
+	"github.com/cloudwego/eino/schema"
+)
+
+const (
+	planCurrentStepKey   = "current_step"
+	planCurrentStepTitle = "当前步骤"
+)
+
+func prepareExecuteNodeInput(input ExecuteNodeInput) (*newagentmodel.AgentRuntimeState, *newagentmodel.ConversationContext, *newagentstream.ChunkEmitter, error) {
+	if input.RuntimeState == nil {
+		return nil, nil, nil, fmt.Errorf("execute node: runtime state 不能为空")
+	}
+	if input.Client == nil {
+		return nil, nil, nil, fmt.Errorf("execute node: execute client 未注入")
+	}
+
+	input.RuntimeState.EnsureCommonState()
+	if input.ConversationContext == nil {
+		input.ConversationContext = newagentmodel.NewConversationContext("")
+	}
+	if input.ChunkEmitter == nil {
+		input.ChunkEmitter = newagentstream.NewChunkEmitter(newagentstream.NoopPayloadEmitter(), "", "", time.Now().Unix())
+	}
+	return input.RuntimeState, input.ConversationContext, input.ChunkEmitter, nil
+}
+
+func syncExecutePinnedContext(
+	conversationContext *newagentmodel.ConversationContext,
+	flowState *newagentmodel.CommonState,
+) {
+	if conversationContext == nil || flowState == nil {
+		return
+	}
+
+	execContent := buildExecuteContextPinnedMarkdown(flowState)
+	if strings.TrimSpace(execContent) != "" {
+		conversationContext.UpsertPinnedBlock(newagentmodel.ContextBlock{
+			Key:     executePinnedKey,
+			Title:   "执行上下文",
+			Content: execContent,
+		})
+	}
+
+	if !flowState.HasPlan() {
+		conversationContext.RemovePinnedBlock(planCurrentStepKey)
+		return
+	}
+
+	step, ok := flowState.CurrentPlanStep()
+	if !ok {
+		conversationContext.RemovePinnedBlock(planCurrentStepKey)
+		return
+	}
+
+	current, total := flowState.PlanProgress()
+	title := strings.TrimSpace(planCurrentStepTitle)
+	if title == "" {
+		title = "当前步骤"
+	}
+	conversationContext.UpsertPinnedBlock(newagentmodel.ContextBlock{
+		Key:     planCurrentStepKey,
+		Title:   title,
+		Content: buildCurrentPlanStepPinnedMarkdown(step, current, total),
+	})
+}
+
+func appendExecuteStepAdvancedMarker(conversationContext *newagentmodel.ConversationContext) {
+	if conversationContext == nil {
+		return
+	}
+
+	history := conversationContext.HistorySnapshot()
+	if len(history) > 0 {
+		last := history[len(history)-1]
+		if last != nil && last.Extra != nil {
+			if kind, ok := last.Extra[executeHistoryKindKey].(string); ok && strings.TrimSpace(kind) == executeHistoryKindStepAdvanced {
+				return
+			}
+		}
+	}
+
+	conversationContext.AppendHistory(&schema.Message{
+		Role:    schema.Assistant,
+		Content: "",
+		Extra: map[string]any{
+			executeHistoryKindKey: executeHistoryKindStepAdvanced,
+		},
+	})
+}
+
+func buildExecuteContextPinnedMarkdown(flowState *newagentmodel.CommonState) string {
+	if flowState == nil {
+		return ""
+	}
+
+	lines := make([]string, 0, 8)
+	if flowState.HasPlan() {
+		lines = append(lines, "执行模式：计划执行（按步骤推进）")
+		current, total := flowState.PlanProgress()
+		lines = append(lines, fmt.Sprintf("计划进度：第 %d/%d 步", current, total))
+
+		if step, ok := flowState.CurrentPlanStep(); ok {
+			lines = append(lines, "当前步骤："+compactExecutePinnedText(step.Content))
+			doneWhen := compactExecutePinnedText(step.DoneWhen)
+			if doneWhen != "" {
+				lines = append(lines, "完成判定(done_when)："+doneWhen)
+			}
+			lines = append(lines, "动作纪律：未满足 done_when 禁止 next_plan；满足后优先 next_plan。")
+		} else {
+			lines = append(lines, "当前步骤：不可读（可能已执行完成）")
+		}
+	} else {
+		lines = append(lines, "执行模式：自由执行（无预定义步骤）")
+	}
+
+	if flowState.MaxRounds > 0 {
+		lines = append(lines, fmt.Sprintf("轮次预算：%d/%d", flowState.RoundUsed, flowState.MaxRounds))
+	}
+	return strings.TrimSpace(strings.Join(lines, "\n"))
+}
+
+func buildCurrentPlanStepPinnedMarkdown(step newagentmodel.PlanStep, current, total int) string {
+	lines := make([]string, 0, 4)
+	lines = append(lines, fmt.Sprintf("步骤进度：第 %d/%d 步", current, total))
+
+	content := compactExecutePinnedText(step.Content)
+	if content == "" {
+		content = "（空）"
+	}
+	lines = append(lines, "步骤内容："+content)
+
+	doneWhen := compactExecutePinnedText(step.DoneWhen)
+	if doneWhen != "" {
+		lines = append(lines, "完成判定："+doneWhen)
+	}
+
+	return strings.TrimSpace(strings.Join(lines, "\n"))
+}
+
+func compactExecutePinnedText(text string) string {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		return ""
+	}
+	text = strings.ReplaceAll(text, "\r\n", "\n")
+	text = strings.ReplaceAll(text, "\n", "；")
+	return strings.TrimSpace(text)
+}