diff --git a/internal/coordinator/engine.go b/internal/coordinator/engine.go
index b2a14b94..43c4972c 100644
--- a/internal/coordinator/engine.go
+++ b/internal/coordinator/engine.go
@@ -7,8 +7,8 @@ import (
 
 	"chat-agent-system/internal/agent"
 	"chat-agent-system/internal/app/stageflow"
+	"chat-agent-system/internal/contracts/vocabulary"
 	"chat-agent-system/internal/ctxmgr"
-	"chat-agent-system/internal/docgov"
 	"chat-agent-system/internal/intent"
 	"chat-agent-system/internal/kb"
 	"chat-agent-system/internal/projectinstance"
@@ -33,7 +33,7 @@ type PendingAction struct {
 	WorkDir  string
 	Reason   string
 	Comment  string
-	Rollback docgov.DocumentState
+	Rollback vocabulary.DocumentState
 	TaskKey  string
 }
 
diff --git a/internal/coordinator/engine_docgov.go b/internal/coordinator/engine_docgov.go
index 9a9089fb..5a936ae1 100644
--- a/internal/coordinator/engine_docgov.go
+++ b/internal/coordinator/engine_docgov.go
@@ -1,12 +1,12 @@
 package coordinator
 
 import (
+	"chat-agent-system/internal/contracts/vocabulary"
 	"context"
 	"fmt"
 	"strings"
 	"time"
 
-	"chat-agent-system/internal/docgov"
 	"chat-agent-system/internal/intent"
 )
 
@@ -323,9 +323,9 @@ func (e *CoordinatorEngine) handleDocGovProposalDecide(ctx context.Context, cand
 		}
 		userCtx.applyPending(nil)
 
-		rollback := docgov.StateDrafting
+		rollback := vocabulary.StateDrafting
 		if userCtx.InteractiveCard != nil && strings.Contains(userCtx.InteractiveCard.ImpactRisk, "reviewing") {
-			rollback = docgov.StateDrafting
+			rollback = vocabulary.StateDrafting
 		}
 
 		return &CoordinationResult{
diff --git a/internal/coordinator/engine_task.go b/internal/coordinator/engine_task.go
index e262dd23..41e9de0f 100644
--- a/internal/coordinator/engine_task.go
+++ b/internal/coordinator/engine_task.go
@@ -8,7 +8,7 @@ import (
 	"strings"
 
 	"chat-agent-system/internal/app/stageflow"
-	"chat-agent-system/internal/docgov"
+	"chat-agent-system/internal/contracts/vocabulary"
 	"chat-agent-system/internal/intent"
 	"chat-agent-system/internal/stream"
 	"chat-agent-system/internal/workflowscope"
@@ -100,7 +100,7 @@ func (e *CoordinatorEngine) handleTriggerTask(ctx context.Context, cand *intent.
 		UserID:       userID,
 	})
 	if err != nil {
-		if errors.Is(err, docgov.ErrDocumentBusy) {
+		if errors.Is(err, vocabulary.ErrDocumentBusy) {
 			msg := "该文档正在由项目助手生成或他人编辑中，请稍后再发起更新。您可以先继续对话或处理其他文档。"
 			if taskRes != nil && taskRes.ErrorReason != "" {
 				msg = taskRes.ErrorReason + "。您可以先继续对话或处理其他文档。"
@@ -114,7 +114,7 @@ func (e *CoordinatorEngine) handleTriggerTask(ctx context.Context, cand *intent.
 				UpdatedContext: userCtx,
 			}, nil
 		}
-		if errors.Is(err, docgov.ErrDocumentLocked) {
+		if errors.Is(err, vocabulary.ErrDocumentLocked) {
 			return &CoordinationResult{
 				Status:         StatusRejected,
 				Intent:         cand.Intent,