[client] Add sleep state tracking to handle wakeup/sleep events reliably (#4894)

Adds a new NotifyOSLifecycle RPC and server handler to centralize OS sleep/wake handling, introduces Server.sleepTriggeredDown for coordination, updates client UI to call the new RPC, and adjusts the internal sleep event enum zero-value semantics.

client/proto/daemon.proto

@@ -24,7 +24,7 @@ service DaemonService {
   // Status of the service.
   rpc Status(StatusRequest) returns (StatusResponse) {}
 
-  // Down engine work in the daemon.
+  // Down stops engine work in the daemon.
   rpc Down(DownRequest) returns (DownResponse) {}
 
   // GetConfig of the daemon.
@@ -93,9 +93,26 @@ service DaemonService {
 
   // WaitJWTToken waits for JWT authentication completion
   rpc WaitJWTToken(WaitJWTTokenRequest) returns (WaitJWTTokenResponse) {}
+
+  rpc NotifyOSLifecycle(OSLifecycleRequest) returns(OSLifecycleResponse) {}
 }
 
 
+
+message OSLifecycleRequest {
+  // avoid collision with loglevel enum
+  enum CycleType {
+    UNKNOWN = 0;
+    SLEEP = 1;
+    WAKEUP = 2;
+  }
+
+  CycleType type = 1;
+}
+
+message OSLifecycleResponse {}
+
+
 message LoginRequest {
   // setupKey netbird setup key.
   string setupKey = 1;

client/proto/daemon_grpc.pb.go

@@ -27,7 +27,7 @@ type DaemonServiceClient interface {
 	Up(ctx context.Context, in *UpRequest, opts ...grpc.CallOption) (*UpResponse, error)
 	// Status of the service.
 	Status(ctx context.Context, in *StatusRequest, opts ...grpc.CallOption) (*StatusResponse, error)
-	// Down engine work in the daemon.
+	// Down stops engine work in the daemon.
 	Down(ctx context.Context, in *DownRequest, opts ...grpc.CallOption) (*DownResponse, error)
 	// GetConfig of the daemon.
 	GetConfig(ctx context.Context, in *GetConfigRequest, opts ...grpc.CallOption) (*GetConfigResponse, error)
@@ -70,6 +70,7 @@ type DaemonServiceClient interface {
 	RequestJWTAuth(ctx context.Context, in *RequestJWTAuthRequest, opts ...grpc.CallOption) (*RequestJWTAuthResponse, error)
 	// WaitJWTToken waits for JWT authentication completion
 	WaitJWTToken(ctx context.Context, in *WaitJWTTokenRequest, opts ...grpc.CallOption) (*WaitJWTTokenResponse, error)
+	NotifyOSLifecycle(ctx context.Context, in *OSLifecycleRequest, opts ...grpc.CallOption) (*OSLifecycleResponse, error)
 }
 
 type daemonServiceClient struct {
@@ -382,6 +383,15 @@ func (c *daemonServiceClient) WaitJWTToken(ctx context.Context, in *WaitJWTToken
 	return out, nil
 }
 
+func (c *daemonServiceClient) NotifyOSLifecycle(ctx context.Context, in *OSLifecycleRequest, opts ...grpc.CallOption) (*OSLifecycleResponse, error) {
+	out := new(OSLifecycleResponse)
+	err := c.cc.Invoke(ctx, "/daemon.DaemonService/NotifyOSLifecycle", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // DaemonServiceServer is the server API for DaemonService service.
 // All implementations must embed UnimplementedDaemonServiceServer
 // for forward compatibility
@@ -395,7 +405,7 @@ type DaemonServiceServer interface {
 	Up(context.Context, *UpRequest) (*UpResponse, error)
 	// Status of the service.
 	Status(context.Context, *StatusRequest) (*StatusResponse, error)
-	// Down engine work in the daemon.
+	// Down stops engine work in the daemon.
 	Down(context.Context, *DownRequest) (*DownResponse, error)
 	// GetConfig of the daemon.
 	GetConfig(context.Context, *GetConfigRequest) (*GetConfigResponse, error)
@@ -438,6 +448,7 @@ type DaemonServiceServer interface {
 	RequestJWTAuth(context.Context, *RequestJWTAuthRequest) (*RequestJWTAuthResponse, error)
 	// WaitJWTToken waits for JWT authentication completion
 	WaitJWTToken(context.Context, *WaitJWTTokenRequest) (*WaitJWTTokenResponse, error)
+	NotifyOSLifecycle(context.Context, *OSLifecycleRequest) (*OSLifecycleResponse, error)
 	mustEmbedUnimplementedDaemonServiceServer()
 }
 
@@ -538,6 +549,9 @@ func (UnimplementedDaemonServiceServer) RequestJWTAuth(context.Context, *Request
 func (UnimplementedDaemonServiceServer) WaitJWTToken(context.Context, *WaitJWTTokenRequest) (*WaitJWTTokenResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method WaitJWTToken not implemented")
 }
+func (UnimplementedDaemonServiceServer) NotifyOSLifecycle(context.Context, *OSLifecycleRequest) (*OSLifecycleResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method NotifyOSLifecycle not implemented")
+}
 func (UnimplementedDaemonServiceServer) mustEmbedUnimplementedDaemonServiceServer() {}
 
 // UnsafeDaemonServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -1112,6 +1126,24 @@ func _DaemonService_WaitJWTToken_Handler(srv interface{}, ctx context.Context, d
 	return interceptor(ctx, in, info, handler)
 }
 
+func _DaemonService_NotifyOSLifecycle_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(OSLifecycleRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DaemonServiceServer).NotifyOSLifecycle(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/daemon.DaemonService/NotifyOSLifecycle",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DaemonServiceServer).NotifyOSLifecycle(ctx, req.(*OSLifecycleRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // DaemonService_ServiceDesc is the grpc.ServiceDesc for DaemonService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -1239,6 +1271,10 @@ var DaemonService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "WaitJWTToken",
 			Handler:    _DaemonService_WaitJWTToken_Handler,
 		},
+		{
+			MethodName: "NotifyOSLifecycle",
+			Handler:    _DaemonService_NotifyOSLifecycle_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{