Version: 0.9.75.dev.260505

后端：
1.收口阶段 6 agent 结构迁移，将 newAgent 内核与 agentsvc 编排层迁入 services/agent
- 切换 Agent 启动装配与 HTTP handler 直连 agent sv，移除旧 service agent bridge
- 补齐 Agent 对 memory、task、task-class、schedule 的 RPC 适配与契约字段
- 扩展 schedule、task、task-class RPC/contract 支撑 Agent 查询、写入与 provider 切流
- 更新迁移文档、README 与相关注释，明确 agent 当前切流点和剩余 memory 迁移面

backend/services/agent/node/execute/context.go

@@ -0,0 +1,157 @@
+package agentexecute
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	agentmodel "github.com/LoveLosita/smartflow/backend/services/agent/model"
+	agentstream "github.com/LoveLosita/smartflow/backend/services/agent/stream"
+	"github.com/cloudwego/eino/schema"
+)
+
+const (
+	planCurrentStepKey   = "current_step"
+	planCurrentStepTitle = "当前步骤"
+)
+
+func prepareExecuteNodeInput(input ExecuteNodeInput) (*agentmodel.AgentRuntimeState, *agentmodel.ConversationContext, *agentstream.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 = agentmodel.NewConversationContext("")
+	}
+	if input.ChunkEmitter == nil {
+		input.ChunkEmitter = agentstream.NewChunkEmitter(agentstream.NoopPayloadEmitter(), "", "", time.Now().Unix())
+	}
+	return input.RuntimeState, input.ConversationContext, input.ChunkEmitter, nil
+}
+
+func syncExecutePinnedContext(
+	conversationContext *agentmodel.ConversationContext,
+	flowState *agentmodel.CommonState,
+) {
+	if conversationContext == nil || flowState == nil {
+		return
+	}
+
+	execContent := buildExecuteContextPinnedMarkdown(flowState)
+	if strings.TrimSpace(execContent) != "" {
+		conversationContext.UpsertPinnedBlock(agentmodel.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(agentmodel.ContextBlock{
+		Key:     planCurrentStepKey,
+		Title:   title,
+		Content: buildCurrentPlanStepPinnedMarkdown(step, current, total),
+	})
+}
+
+func appendExecuteStepAdvancedMarker(conversationContext *agentmodel.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 *agentmodel.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 agentmodel.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)
+}