diff --git a/internal/ai/application/runtime/service.go b/internal/ai/application/runtime/service.go
new file mode 100644
index 0000000..ed52e66
--- /dev/null
+++ b/internal/ai/application/runtime/service.go
@@ -0,0 +1,31 @@
+package runtime
+
+import (
+	"context"
+
+	runtimeapp "cs-agent/internal/ai/runtime/app"
+)
+
+type Service struct {
+	app *runtimeapp.Service
+}
+
+func NewService() *Service {
+	return &Service{
+		app: runtimeapp.NewService(),
+	}
+}
+
+func (s *Service) Run(ctx context.Context, req Request) (*Summary, error) {
+	if s == nil || s.app == nil {
+		return nil, nil
+	}
+	return s.app.Run(ctx, req)
+}
+
+func (s *Service) Resume(ctx context.Context, req ResumeRequest) (*Summary, error) {
+	if s == nil || s.app == nil {
+		return nil, nil
+	}
+	return s.app.Resume(ctx, req)
+}
diff --git a/internal/ai/application/runtime/types.go b/internal/ai/application/runtime/types.go
new file mode 100644
index 0000000..1c15011
--- /dev/null
+++ b/internal/ai/application/runtime/types.go
@@ -0,0 +1,9 @@
+package runtime
+
+import runtimeapp "cs-agent/internal/ai/runtime/app"
+
+// TODO 为什么要定义类型别名？
+type Request = runtimeapp.Request
+type ResumeRequest = runtimeapp.ResumeRequest
+type InterruptContextSummary = runtimeapp.InterruptContextSummary
+type Summary = runtimeapp.Summary
diff --git a/internal/ai/runtime/service.go b/internal/ai/runtime/service.go
index 2d9da56..6d8e847 100644
--- a/internal/ai/runtime/service.go
+++ b/internal/ai/runtime/service.go
@@ -3,19 +3,19 @@ package runtime
 import (
 	"context"
 
-	runtimeapp "cs-agent/internal/ai/runtime/app"
+	applicationruntime "cs-agent/internal/ai/application/runtime"
 )
 
 var Service = newService()
 
 func newService() *service {
 	return &service{
-		app: runtimeapp.NewService(),
+		app: applicationruntime.NewService(),
 	}
 }
 
 type service struct {
-	app *runtimeapp.Service
+	app *applicationruntime.Service
 }
 
 func (s *service) Run(ctx context.Context, req Request) (*Summary, error) {
diff --git a/internal/ai/runtime/types.go b/internal/ai/runtime/types.go
index cc9ea9f..8f4630d 100644
--- a/internal/ai/runtime/types.go
+++ b/internal/ai/runtime/types.go
@@ -1,9 +1,8 @@
 package runtime
 
-import runtimeapp "cs-agent/internal/ai/runtime/app"
+import applicationruntime "cs-agent/internal/ai/application/runtime"
 
-// TODO 这里为什么再设置一下类型别名，不能直接在外部使用 runtimeapp.Request 之类的类型呢？
-type Request = runtimeapp.Request
-type ResumeRequest = runtimeapp.ResumeRequest
-type InterruptContextSummary = runtimeapp.InterruptContextSummary
-type Summary = runtimeapp.Summary
+type Request = applicationruntime.Request
+type ResumeRequest = applicationruntime.ResumeRequest
+type InterruptContextSummary = applicationruntime.InterruptContextSummary
+type Summary = applicationruntime.Summary