diff --git a/internal/multiagent/eino_orchestration.go b/internal/multiagent/eino_orchestration.go
index 5240ba06..5e7c1a00 100644
--- a/internal/multiagent/eino_orchestration.go
+++ b/internal/multiagent/eino_orchestration.go
@@ -5,11 +5,14 @@ import (
 	"fmt"
 	"strings"
 
+	"cyberstrike-ai/internal/config"
+
 	"github.com/cloudwego/eino-ext/components/model/openai"
 	"github.com/cloudwego/eino/adk"
 	"github.com/cloudwego/eino/adk/prebuilt/planexecute"
 	"github.com/cloudwego/eino/components/model"
 	"github.com/cloudwego/eino/schema"
+	"go.uber.org/zap"
 )
 
 // PlanExecuteRootArgs 构建 Eino adk/prebuilt/planexecute 根 Agent 所需参数。
@@ -20,6 +23,9 @@ type PlanExecuteRootArgs struct {
 	ToolsCfg             adk.ToolsConfig
 	ExecMaxIter          int
 	LoopMaxIter          int
+	// AppCfg / Logger 非空时为 Executor 挂载与 Deep/Supervisor 一致的 Eino summarization 中间件。
+	AppCfg *config.Config
+	Logger *zap.Logger
 }
 
 // NewPlanExecuteRoot 返回 plan → execute → replan 预置编排根节点（与 Deep / Supervisor 并列）。
@@ -41,17 +47,26 @@ func NewPlanExecuteRoot(ctx context.Context, a *PlanExecuteRootArgs) (adk.Resuma
 		return nil, fmt.Errorf("plan_execute planner: %w", err)
 	}
 	replanner, err := planexecute.NewReplanner(ctx, &planexecute.ReplannerConfig{
-		ChatModel: tcm,
+		ChatModel:  tcm,
+		GenInputFn: planExecuteReplannerGenInput,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("plan_execute replanner: %w", err)
 	}
-	executor, err := planexecute.NewExecutor(ctx, &planexecute.ExecutorConfig{
+	var execHandlers []adk.ChatModelAgentMiddleware
+	if a.AppCfg != nil {
+		sumMw, sumErr := newEinoSummarizationMiddleware(ctx, a.ExecModel, a.AppCfg, a.Logger)
+		if sumErr != nil {
+			return nil, fmt.Errorf("plan_execute executor summarization: %w", sumErr)
+		}
+		execHandlers = append(execHandlers, sumMw)
+	}
+	executor, err := newPlanExecuteExecutor(ctx, &planexecute.ExecutorConfig{
 		Model:         a.ExecModel,
 		ToolsConfig:   a.ToolsCfg,
 		MaxIterations: a.ExecMaxIter,
 		GenInputFn:    planExecuteExecutorGenInput(a.OrchInstruction),
-	})
+	}, execHandlers)
 	if err != nil {
 		return nil, fmt.Errorf("plan_execute executor: %w", err)
 	}
@@ -100,13 +115,29 @@ func planExecuteFormatInput(input []adk.Message) string {
 }
 
 func planExecuteFormatExecutedSteps(results []planexecute.ExecutedStep) string {
+	capped := capPlanExecuteExecutedSteps(results)
 	var sb strings.Builder
-	for _, result := range results {
+	for _, result := range capped {
 		sb.WriteString(fmt.Sprintf("Step: %s\nResult: %s\n\n", result.Step, result.Result))
 	}
 	return sb.String()
 }
 
+// planExecuteReplannerGenInput 与 Eino 默认 Replanner 输入一致，但 executed_steps 经 cap 后再写入 prompt。
+func planExecuteReplannerGenInput(ctx context.Context, in *planexecute.ExecutionContext) ([]adk.Message, error) {
+	planContent, err := in.Plan.MarshalJSON()
+	if err != nil {
+		return nil, err
+	}
+	return planexecute.ReplannerPrompt.Format(ctx, map[string]any{
+		"plan":           string(planContent),
+		"input":          planExecuteFormatInput(in.UserInput),
+		"executed_steps": planExecuteFormatExecutedSteps(in.ExecutedSteps),
+		"plan_tool":      planexecute.PlanToolInfo.Name,
+		"respond_tool":   planexecute.RespondToolInfo.Name,
+	})
+}
+
 // planExecuteStreamsMainAssistant 将规划/执行/重规划各阶段助手流式输出映射到主对话区。
 func planExecuteStreamsMainAssistant(agent string) bool {
 	if agent == "" {
diff --git a/internal/multiagent/plan_execute_executor.go b/internal/multiagent/plan_execute_executor.go
new file mode 100644
index 00000000..d1af3a72
--- /dev/null
+++ b/internal/multiagent/plan_execute_executor.go
@@ -0,0 +1,77 @@
+package multiagent
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/cloudwego/eino/adk"
+	"github.com/cloudwego/eino/adk/prebuilt/planexecute"
+)
+
+// newPlanExecuteExecutor 与 planexecute.NewExecutor 行为一致，但可为执行器注入 Handlers（例如 summarization 中间件）。
+func newPlanExecuteExecutor(ctx context.Context, cfg *planexecute.ExecutorConfig, handlers []adk.ChatModelAgentMiddleware) (adk.Agent, error) {
+	if cfg == nil {
+		return nil, fmt.Errorf("plan_execute: ExecutorConfig 为空")
+	}
+	if cfg.Model == nil {
+		return nil, fmt.Errorf("plan_execute: Executor Model 为空")
+	}
+	genInputFn := cfg.GenInputFn
+	if genInputFn == nil {
+		genInputFn = planExecuteDefaultGenExecutorInput
+	}
+	genInput := func(ctx context.Context, instruction string, _ *adk.AgentInput) ([]adk.Message, error) {
+		plan, ok := adk.GetSessionValue(ctx, planexecute.PlanSessionKey)
+		if !ok {
+			panic("impossible: plan not found")
+		}
+		plan_ := plan.(planexecute.Plan)
+
+		userInput, ok := adk.GetSessionValue(ctx, planexecute.UserInputSessionKey)
+		if !ok {
+			panic("impossible: user input not found")
+		}
+		userInput_ := userInput.([]adk.Message)
+
+		var executedSteps_ []planexecute.ExecutedStep
+		executedStep, ok := adk.GetSessionValue(ctx, planexecute.ExecutedStepsSessionKey)
+		if ok {
+			executedSteps_ = executedStep.([]planexecute.ExecutedStep)
+		}
+
+		in := &planexecute.ExecutionContext{
+			UserInput:     userInput_,
+			Plan:          plan_,
+			ExecutedSteps: executedSteps_,
+		}
+		return genInputFn(ctx, in)
+	}
+
+	agentCfg := &adk.ChatModelAgentConfig{
+		Name:          "executor",
+		Description:   "an executor agent",
+		Model:         cfg.Model,
+		ToolsConfig:   cfg.ToolsConfig,
+		GenModelInput: genInput,
+		MaxIterations: cfg.MaxIterations,
+		OutputKey:     planexecute.ExecutedStepSessionKey,
+	}
+	if len(handlers) > 0 {
+		agentCfg.Handlers = handlers
+	}
+	return adk.NewChatModelAgent(ctx, agentCfg)
+}
+
+// planExecuteDefaultGenExecutorInput 对齐 Eino planexecute.defaultGenExecutorInputFn（包外不可引用默认实现）。
+func planExecuteDefaultGenExecutorInput(ctx context.Context, in *planexecute.ExecutionContext) ([]adk.Message, error) {
+	planContent, err := in.Plan.MarshalJSON()
+	if err != nil {
+		return nil, err
+	}
+	return planexecute.ExecutorPrompt.Format(ctx, map[string]any{
+		"input":          planExecuteFormatInput(in.UserInput),
+		"plan":           string(planContent),
+		"executed_steps": planExecuteFormatExecutedSteps(in.ExecutedSteps),
+		"step":           in.Plan.FirstStep(),
+	})
+}
diff --git a/internal/multiagent/plan_execute_steps_cap.go b/internal/multiagent/plan_execute_steps_cap.go
new file mode 100644
index 00000000..bb5092c0
--- /dev/null
+++ b/internal/multiagent/plan_execute_steps_cap.go
@@ -0,0 +1,59 @@
+package multiagent
+
+import (
+	"fmt"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/cloudwego/eino/adk/prebuilt/planexecute"
+)
+
+// plan_execute 的 Replanner / Executor prompt 会线性拼接每步 Result；无界时易撑爆上下文。
+// 此处仅约束「写入模型 prompt 的视图」，不修改 Eino session 中的原始 ExecutedSteps。
+
+const (
+	planExecuteMaxStepResultRunes = 12000
+	planExecuteKeepLastSteps    = 16
+)
+
+func truncateRunesWithSuffix(s string, maxRunes int, suffix string) string {
+	if maxRunes <= 0 || s == "" {
+		return s
+	}
+	rs := []rune(s)
+	if len(rs) <= maxRunes {
+		return s
+	}
+	return string(rs[:maxRunes]) + suffix
+}
+
+// capPlanExecuteExecutedSteps 折叠较早步骤、截断单步过长结果，供 prompt 使用。
+func capPlanExecuteExecutedSteps(steps []planexecute.ExecutedStep) []planexecute.ExecutedStep {
+	if len(steps) == 0 {
+		return steps
+	}
+	out := make([]planexecute.ExecutedStep, 0, len(steps)+1)
+	start := 0
+	if len(steps) > planExecuteKeepLastSteps {
+		start = len(steps) - planExecuteKeepLastSteps
+		var b strings.Builder
+		b.WriteString(fmt.Sprintf("（上文已完成 %d 步；此处仅保留步骤标题以节省上下文，完整输出已省略。后续 %d 步仍保留正文。）\n",
+			start, planExecuteKeepLastSteps))
+		for i := 0; i < start; i++ {
+			b.WriteString(fmt.Sprintf("- %s\n", steps[i].Step))
+		}
+		out = append(out, planexecute.ExecutedStep{
+			Step:   "[Earlier steps — titles only]",
+			Result: strings.TrimRight(b.String(), "\n"),
+		})
+	}
+	suffix := "\n…[step result truncated]"
+	for i := start; i < len(steps); i++ {
+		e := steps[i]
+		if utf8.RuneCountInString(e.Result) > planExecuteMaxStepResultRunes {
+			e.Result = truncateRunesWithSuffix(e.Result, planExecuteMaxStepResultRunes, suffix)
+		}
+		out = append(out, e)
+	}
+	return out
+}
diff --git a/internal/multiagent/plan_execute_steps_cap_test.go b/internal/multiagent/plan_execute_steps_cap_test.go
new file mode 100644
index 00000000..27e0cf97
--- /dev/null
+++ b/internal/multiagent/plan_execute_steps_cap_test.go
@@ -0,0 +1,34 @@
+package multiagent
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/cloudwego/eino/adk/prebuilt/planexecute"
+)
+
+func TestCapPlanExecuteExecutedSteps_TruncatesLongResult(t *testing.T) {
+	long := strings.Repeat("x", planExecuteMaxStepResultRunes+500)
+	steps := []planexecute.ExecutedStep{{Step: "s1", Result: long}}
+	out := capPlanExecuteExecutedSteps(steps)
+	if len(out) != 1 {
+		t.Fatalf("len=%d", len(out))
+	}
+	if !strings.Contains(out[0].Result, "truncated") {
+		t.Fatalf("expected truncation marker in %q", out[0].Result[:80])
+	}
+}
+
+func TestCapPlanExecuteExecutedSteps_FoldsEarlySteps(t *testing.T) {
+	var steps []planexecute.ExecutedStep
+	for i := 0; i < planExecuteKeepLastSteps+5; i++ {
+		steps = append(steps, planexecute.ExecutedStep{Step: "step", Result: "ok"})
+	}
+	out := capPlanExecuteExecutedSteps(steps)
+	if len(out) != planExecuteKeepLastSteps+1 {
+		t.Fatalf("want %d entries, got %d", planExecuteKeepLastSteps+1, len(out))
+	}
+	if out[0].Step != "[Earlier steps — titles only]" {
+		t.Fatalf("first entry: %#v", out[0])
+	}
+}
diff --git a/internal/multiagent/runner.go b/internal/multiagent/runner.go
index c650eb6b..49e33bff 100644
--- a/internal/multiagent/runner.go
+++ b/internal/multiagent/runner.go
@@ -398,6 +398,8 @@ func RunDeepAgent(
 			ToolsCfg:             mainToolsCfg,
 			ExecMaxIter:          deepMaxIter,
 			LoopMaxIter:          ma.PlanExecuteLoopMaxIterations,
+			AppCfg:               appCfg,
+			Logger:               logger,
 		})
 		if perr != nil {
 			return nil, perr