client/go: regenerate protos for BrowseChildren

clients/go/internal/generated/galaxy_repository.pb.go

@@ -824,6 +824,260 @@ func (x *GalaxyAttribute) GetIsAlarm() bool {
 	return false
 }
 
+type BrowseChildrenRequest struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// Parent selector. Empty oneof returns root objects (parent_gobject_id == 0).
+	//
+	// Types that are valid to be assigned to Parent:
+	//
+	//	*BrowseChildrenRequest_ParentGobjectId
+	//	*BrowseChildrenRequest_ParentTagName
+	//	*BrowseChildrenRequest_ParentContainedPath
+	Parent isBrowseChildrenRequest_Parent `protobuf_oneof:"parent"`
+	// Maximum number of direct children to return. Server default 500; cap 5000.
+	PageSize int32 `protobuf:"varint,4,opt,name=page_size,json=pageSize,proto3" json:"page_size,omitempty"`
+	// Opaque token returned by a previous BrowseChildren response. Bound to the
+	// cache sequence, parent selector, and the filter set; a mismatch returns
+	// InvalidArgument.
+	PageToken string `protobuf:"bytes,5,opt,name=page_token,json=pageToken,proto3" json:"page_token,omitempty"`
+	// --- Filter parity with DiscoverHierarchy. AND-combined. ---
+	CategoryIds           []int32  `protobuf:"varint,6,rep,packed,name=category_ids,json=categoryIds,proto3" json:"category_ids,omitempty"`
+	TemplateChainContains []string `protobuf:"bytes,7,rep,name=template_chain_contains,json=templateChainContains,proto3" json:"template_chain_contains,omitempty"`
+	TagNameGlob           string   `protobuf:"bytes,8,opt,name=tag_name_glob,json=tagNameGlob,proto3" json:"tag_name_glob,omitempty"`
+	IncludeAttributes     *bool    `protobuf:"varint,9,opt,name=include_attributes,json=includeAttributes,proto3,oneof" json:"include_attributes,omitempty"`
+	AlarmBearingOnly      bool     `protobuf:"varint,10,opt,name=alarm_bearing_only,json=alarmBearingOnly,proto3" json:"alarm_bearing_only,omitempty"`
+	HistorizedOnly        bool     `protobuf:"varint,11,opt,name=historized_only,json=historizedOnly,proto3" json:"historized_only,omitempty"`
+	unknownFields         protoimpl.UnknownFields
+	sizeCache             protoimpl.SizeCache
+}
+
+func (x *BrowseChildrenRequest) Reset() {
+	*x = BrowseChildrenRequest{}
+	mi := &file_galaxy_repository_proto_msgTypes[10]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *BrowseChildrenRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*BrowseChildrenRequest) ProtoMessage() {}
+
+func (x *BrowseChildrenRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_galaxy_repository_proto_msgTypes[10]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BrowseChildrenRequest.ProtoReflect.Descriptor instead.
+func (*BrowseChildrenRequest) Descriptor() ([]byte, []int) {
+	return file_galaxy_repository_proto_rawDescGZIP(), []int{10}
+}
+
+func (x *BrowseChildrenRequest) GetParent() isBrowseChildrenRequest_Parent {
+	if x != nil {
+		return x.Parent
+	}
+	return nil
+}
+
+func (x *BrowseChildrenRequest) GetParentGobjectId() int32 {
+	if x != nil {
+		if x, ok := x.Parent.(*BrowseChildrenRequest_ParentGobjectId); ok {
+			return x.ParentGobjectId
+		}
+	}
+	return 0
+}
+
+func (x *BrowseChildrenRequest) GetParentTagName() string {
+	if x != nil {
+		if x, ok := x.Parent.(*BrowseChildrenRequest_ParentTagName); ok {
+			return x.ParentTagName
+		}
+	}
+	return ""
+}
+
+func (x *BrowseChildrenRequest) GetParentContainedPath() string {
+	if x != nil {
+		if x, ok := x.Parent.(*BrowseChildrenRequest_ParentContainedPath); ok {
+			return x.ParentContainedPath
+		}
+	}
+	return ""
+}
+
+func (x *BrowseChildrenRequest) GetPageSize() int32 {
+	if x != nil {
+		return x.PageSize
+	}
+	return 0
+}
+
+func (x *BrowseChildrenRequest) GetPageToken() string {
+	if x != nil {
+		return x.PageToken
+	}
+	return ""
+}
+
+func (x *BrowseChildrenRequest) GetCategoryIds() []int32 {
+	if x != nil {
+		return x.CategoryIds
+	}
+	return nil
+}
+
+func (x *BrowseChildrenRequest) GetTemplateChainContains() []string {
+	if x != nil {
+		return x.TemplateChainContains
+	}
+	return nil
+}
+
+func (x *BrowseChildrenRequest) GetTagNameGlob() string {
+	if x != nil {
+		return x.TagNameGlob
+	}
+	return ""
+}
+
+func (x *BrowseChildrenRequest) GetIncludeAttributes() bool {
+	if x != nil && x.IncludeAttributes != nil {
+		return *x.IncludeAttributes
+	}
+	return false
+}
+
+func (x *BrowseChildrenRequest) GetAlarmBearingOnly() bool {
+	if x != nil {
+		return x.AlarmBearingOnly
+	}
+	return false
+}
+
+func (x *BrowseChildrenRequest) GetHistorizedOnly() bool {
+	if x != nil {
+		return x.HistorizedOnly
+	}
+	return false
+}
+
+type isBrowseChildrenRequest_Parent interface {
+	isBrowseChildrenRequest_Parent()
+}
+
+type BrowseChildrenRequest_ParentGobjectId struct {
+	ParentGobjectId int32 `protobuf:"varint,1,opt,name=parent_gobject_id,json=parentGobjectId,proto3,oneof"`
+}
+
+type BrowseChildrenRequest_ParentTagName struct {
+	ParentTagName string `protobuf:"bytes,2,opt,name=parent_tag_name,json=parentTagName,proto3,oneof"`
+}
+
+type BrowseChildrenRequest_ParentContainedPath struct {
+	ParentContainedPath string `protobuf:"bytes,3,opt,name=parent_contained_path,json=parentContainedPath,proto3,oneof"`
+}
+
+func (*BrowseChildrenRequest_ParentGobjectId) isBrowseChildrenRequest_Parent() {}
+
+func (*BrowseChildrenRequest_ParentTagName) isBrowseChildrenRequest_Parent() {}
+
+func (*BrowseChildrenRequest_ParentContainedPath) isBrowseChildrenRequest_Parent() {}
+
+type BrowseChildrenReply struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// Direct children matching the filter, sorted areas-first then by
+	// case-insensitive display name (same order as the dashboard tree).
+	Children []*GalaxyObject `protobuf:"bytes,1,rep,name=children,proto3" json:"children,omitempty"`
+	// Non-empty when another page of siblings is available.
+	NextPageToken string `protobuf:"bytes,2,opt,name=next_page_token,json=nextPageToken,proto3" json:"next_page_token,omitempty"`
+	// Total matching direct children of the parent (post-filter).
+	TotalChildCount int32 `protobuf:"varint,3,opt,name=total_child_count,json=totalChildCount,proto3" json:"total_child_count,omitempty"`
+	// Parallel array, indexed with `children`. True when the child has at least
+	// one matching descendant under the same filter set. Lets a UI choose
+	// whether to draw an expand triangle without an extra round trip.
+	ChildHasChildren []bool `protobuf:"varint,4,rep,packed,name=child_has_children,json=childHasChildren,proto3" json:"child_has_children,omitempty"`
+	// Cache sequence this reply was projected from. Clients may pass it back as
+	// part of the page_token contract. Mismatch on the next page -> InvalidArgument.
+	CacheSequence uint64 `protobuf:"varint,5,opt,name=cache_sequence,json=cacheSequence,proto3" json:"cache_sequence,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *BrowseChildrenReply) Reset() {
+	*x = BrowseChildrenReply{}
+	mi := &file_galaxy_repository_proto_msgTypes[11]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *BrowseChildrenReply) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*BrowseChildrenReply) ProtoMessage() {}
+
+func (x *BrowseChildrenReply) ProtoReflect() protoreflect.Message {
+	mi := &file_galaxy_repository_proto_msgTypes[11]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BrowseChildrenReply.ProtoReflect.Descriptor instead.
+func (*BrowseChildrenReply) Descriptor() ([]byte, []int) {
+	return file_galaxy_repository_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *BrowseChildrenReply) GetChildren() []*GalaxyObject {
+	if x != nil {
+		return x.Children
+	}
+	return nil
+}
+
+func (x *BrowseChildrenReply) GetNextPageToken() string {
+	if x != nil {
+		return x.NextPageToken
+	}
+	return ""
+}
+
+func (x *BrowseChildrenReply) GetTotalChildCount() int32 {
+	if x != nil {
+		return x.TotalChildCount
+	}
+	return 0
+}
+
+func (x *BrowseChildrenReply) GetChildHasChildren() []bool {
+	if x != nil {
+		return x.ChildHasChildren
+	}
+	return nil
+}
+
+func (x *BrowseChildrenReply) GetCacheSequence() uint64 {
+	if x != nil {
+		return x.CacheSequence
+	}
+	return 0
+}
+
 var File_galaxy_repository_proto protoreflect.FileDescriptor
 
 const file_galaxy_repository_proto_rawDesc = "" +
@@ -897,12 +1151,35 @@ const file_galaxy_repository_proto_rawDesc = "" +
 	"\x17security_classification\x18\t \x01(\x05R\x16securityClassification\x12#\n" +
 	"\ris_historized\x18\n" +
 	" \x01(\bR\fisHistorized\x12\x19\n" +
-	"\bis_alarm\x18\v \x01(\bR\aisAlarm2\xcc\x03\n" +
+	"\bis_alarm\x18\v \x01(\bR\aisAlarm\"\x8c\x04\n" +
+	"\x15BrowseChildrenRequest\x12,\n" +
+	"\x11parent_gobject_id\x18\x01 \x01(\x05H\x00R\x0fparentGobjectId\x12(\n" +
+	"\x0fparent_tag_name\x18\x02 \x01(\tH\x00R\rparentTagName\x124\n" +
+	"\x15parent_contained_path\x18\x03 \x01(\tH\x00R\x13parentContainedPath\x12\x1b\n" +
+	"\tpage_size\x18\x04 \x01(\x05R\bpageSize\x12\x1d\n" +
+	"\n" +
+	"page_token\x18\x05 \x01(\tR\tpageToken\x12!\n" +
+	"\fcategory_ids\x18\x06 \x03(\x05R\vcategoryIds\x126\n" +
+	"\x17template_chain_contains\x18\a \x03(\tR\x15templateChainContains\x12\"\n" +
+	"\rtag_name_glob\x18\b \x01(\tR\vtagNameGlob\x122\n" +
+	"\x12include_attributes\x18\t \x01(\bH\x01R\x11includeAttributes\x88\x01\x01\x12,\n" +
+	"\x12alarm_bearing_only\x18\n" +
+	" \x01(\bR\x10alarmBearingOnly\x12'\n" +
+	"\x0fhistorized_only\x18\v \x01(\bR\x0ehistorizedOnlyB\b\n" +
+	"\x06parentB\x15\n" +
+	"\x13_include_attributes\"\xfe\x01\n" +
+	"\x13BrowseChildrenReply\x12>\n" +
+	"\bchildren\x18\x01 \x03(\v2\".galaxy_repository.v1.GalaxyObjectR\bchildren\x12&\n" +
+	"\x0fnext_page_token\x18\x02 \x01(\tR\rnextPageToken\x12*\n" +
+	"\x11total_child_count\x18\x03 \x01(\x05R\x0ftotalChildCount\x12,\n" +
+	"\x12child_has_children\x18\x04 \x03(\bR\x10childHasChildren\x12%\n" +
+	"\x0ecache_sequence\x18\x05 \x01(\x04R\rcacheSequence2\xb6\x04\n" +
 	"\x10GalaxyRepository\x12h\n" +
 	"\x0eTestConnection\x12+.galaxy_repository.v1.TestConnectionRequest\x1a).galaxy_repository.v1.TestConnectionReply\x12q\n" +
 	"\x11GetLastDeployTime\x12..galaxy_repository.v1.GetLastDeployTimeRequest\x1a,.galaxy_repository.v1.GetLastDeployTimeReply\x12q\n" +
 	"\x11DiscoverHierarchy\x12..galaxy_repository.v1.DiscoverHierarchyRequest\x1a,.galaxy_repository.v1.DiscoverHierarchyReply\x12h\n" +
-	"\x11WatchDeployEvents\x12..galaxy_repository.v1.WatchDeployEventsRequest\x1a!.galaxy_repository.v1.DeployEvent0\x01B-\xaa\x02*ZB.MOM.WW.MxGateway.Contracts.Proto.Galaxyb\x06proto3"
+	"\x11WatchDeployEvents\x12..galaxy_repository.v1.WatchDeployEventsRequest\x1a!.galaxy_repository.v1.DeployEvent0\x01\x12h\n" +
+	"\x0eBrowseChildren\x12+.galaxy_repository.v1.BrowseChildrenRequest\x1a).galaxy_repository.v1.BrowseChildrenReplyB-\xaa\x02*ZB.MOM.WW.MxGateway.Contracts.Proto.Galaxyb\x06proto3"
 
 var (
 	file_galaxy_repository_proto_rawDescOnce sync.Once
@@ -916,7 +1193,7 @@ func file_galaxy_repository_proto_rawDescGZIP() []byte {
 	return file_galaxy_repository_proto_rawDescData
 }
 
-var file_galaxy_repository_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
+var file_galaxy_repository_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_galaxy_repository_proto_goTypes = []any{
 	(*TestConnectionRequest)(nil),    // 0: galaxy_repository.v1.TestConnectionRequest
 	(*TestConnectionReply)(nil),      // 1: galaxy_repository.v1.TestConnectionReply
@@ -928,30 +1205,35 @@ var file_galaxy_repository_proto_goTypes = []any{
 	(*DeployEvent)(nil),              // 7: galaxy_repository.v1.DeployEvent
 	(*GalaxyObject)(nil),             // 8: galaxy_repository.v1.GalaxyObject
 	(*GalaxyAttribute)(nil),          // 9: galaxy_repository.v1.GalaxyAttribute
-	(*timestamppb.Timestamp)(nil),    // 10: google.protobuf.Timestamp
+	(*BrowseChildrenRequest)(nil),    // 10: galaxy_repository.v1.BrowseChildrenRequest
-	(*wrapperspb.Int32Value)(nil),    // 11: google.protobuf.Int32Value
+	(*BrowseChildrenReply)(nil),      // 11: galaxy_repository.v1.BrowseChildrenReply
+	(*timestamppb.Timestamp)(nil),    // 12: google.protobuf.Timestamp
+	(*wrapperspb.Int32Value)(nil),    // 13: google.protobuf.Int32Value
 }
 var file_galaxy_repository_proto_depIdxs = []int32{
-	10, // 0: galaxy_repository.v1.GetLastDeployTimeReply.time_of_last_deploy:type_name -> google.protobuf.Timestamp
+	12, // 0: galaxy_repository.v1.GetLastDeployTimeReply.time_of_last_deploy:type_name -> google.protobuf.Timestamp
-	11, // 1: galaxy_repository.v1.DiscoverHierarchyRequest.max_depth:type_name -> google.protobuf.Int32Value
+	13, // 1: galaxy_repository.v1.DiscoverHierarchyRequest.max_depth:type_name -> google.protobuf.Int32Value
 	8,  // 2: galaxy_repository.v1.DiscoverHierarchyReply.objects:type_name -> galaxy_repository.v1.GalaxyObject
-	10, // 3: galaxy_repository.v1.WatchDeployEventsRequest.last_seen_deploy_time:type_name -> google.protobuf.Timestamp
+	12, // 3: galaxy_repository.v1.WatchDeployEventsRequest.last_seen_deploy_time:type_name -> google.protobuf.Timestamp
-	10, // 4: galaxy_repository.v1.DeployEvent.observed_at:type_name -> google.protobuf.Timestamp
+	12, // 4: galaxy_repository.v1.DeployEvent.observed_at:type_name -> google.protobuf.Timestamp
-	10, // 5: galaxy_repository.v1.DeployEvent.time_of_last_deploy:type_name -> google.protobuf.Timestamp
+	12, // 5: galaxy_repository.v1.DeployEvent.time_of_last_deploy:type_name -> google.protobuf.Timestamp
 	9,  // 6: galaxy_repository.v1.GalaxyObject.attributes:type_name -> galaxy_repository.v1.GalaxyAttribute
-	0,  // 7: galaxy_repository.v1.GalaxyRepository.TestConnection:input_type -> galaxy_repository.v1.TestConnectionRequest
+	8,  // 7: galaxy_repository.v1.BrowseChildrenReply.children:type_name -> galaxy_repository.v1.GalaxyObject
-	2,  // 8: galaxy_repository.v1.GalaxyRepository.GetLastDeployTime:input_type -> galaxy_repository.v1.GetLastDeployTimeRequest
+	0,  // 8: galaxy_repository.v1.GalaxyRepository.TestConnection:input_type -> galaxy_repository.v1.TestConnectionRequest
-	4,  // 9: galaxy_repository.v1.GalaxyRepository.DiscoverHierarchy:input_type -> galaxy_repository.v1.DiscoverHierarchyRequest
+	2,  // 9: galaxy_repository.v1.GalaxyRepository.GetLastDeployTime:input_type -> galaxy_repository.v1.GetLastDeployTimeRequest
-	6,  // 10: galaxy_repository.v1.GalaxyRepository.WatchDeployEvents:input_type -> galaxy_repository.v1.WatchDeployEventsRequest
+	4,  // 10: galaxy_repository.v1.GalaxyRepository.DiscoverHierarchy:input_type -> galaxy_repository.v1.DiscoverHierarchyRequest
-	1,  // 11: galaxy_repository.v1.GalaxyRepository.TestConnection:output_type -> galaxy_repository.v1.TestConnectionReply
+	6,  // 11: galaxy_repository.v1.GalaxyRepository.WatchDeployEvents:input_type -> galaxy_repository.v1.WatchDeployEventsRequest
-	3,  // 12: galaxy_repository.v1.GalaxyRepository.GetLastDeployTime:output_type -> galaxy_repository.v1.GetLastDeployTimeReply
+	10, // 12: galaxy_repository.v1.GalaxyRepository.BrowseChildren:input_type -> galaxy_repository.v1.BrowseChildrenRequest
-	5,  // 13: galaxy_repository.v1.GalaxyRepository.DiscoverHierarchy:output_type -> galaxy_repository.v1.DiscoverHierarchyReply
+	1,  // 13: galaxy_repository.v1.GalaxyRepository.TestConnection:output_type -> galaxy_repository.v1.TestConnectionReply
-	7,  // 14: galaxy_repository.v1.GalaxyRepository.WatchDeployEvents:output_type -> galaxy_repository.v1.DeployEvent
+	3,  // 14: galaxy_repository.v1.GalaxyRepository.GetLastDeployTime:output_type -> galaxy_repository.v1.GetLastDeployTimeReply
-	11, // [11:15] is the sub-list for method output_type
+	5,  // 15: galaxy_repository.v1.GalaxyRepository.DiscoverHierarchy:output_type -> galaxy_repository.v1.DiscoverHierarchyReply
-	7,  // [7:11] is the sub-list for method input_type
+	7,  // 16: galaxy_repository.v1.GalaxyRepository.WatchDeployEvents:output_type -> galaxy_repository.v1.DeployEvent
-	7,  // [7:7] is the sub-list for extension type_name
+	11, // 17: galaxy_repository.v1.GalaxyRepository.BrowseChildren:output_type -> galaxy_repository.v1.BrowseChildrenReply
-	7,  // [7:7] is the sub-list for extension extendee
+	13, // [13:18] is the sub-list for method output_type
-	0,  // [0:7] is the sub-list for field type_name
+	8,  // [8:13] is the sub-list for method input_type
+	8,  // [8:8] is the sub-list for extension type_name
+	8,  // [8:8] is the sub-list for extension extendee
+	0,  // [0:8] is the sub-list for field type_name
 }
 
 func init() { file_galaxy_repository_proto_init() }
@@ -964,13 +1246,18 @@ func file_galaxy_repository_proto_init() {
 		(*DiscoverHierarchyRequest_RootTagName)(nil),
 		(*DiscoverHierarchyRequest_RootContainedPath)(nil),
 	}
+	file_galaxy_repository_proto_msgTypes[10].OneofWrappers = []any{
+		(*BrowseChildrenRequest_ParentGobjectId)(nil),
+		(*BrowseChildrenRequest_ParentTagName)(nil),
+		(*BrowseChildrenRequest_ParentContainedPath)(nil),
+	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_galaxy_repository_proto_rawDesc), len(file_galaxy_repository_proto_rawDesc)),
 			NumEnums:      0,
-			NumMessages:   10,
+			NumMessages:   12,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

clients/go/internal/generated/galaxy_repository_grpc.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.6.1
+// - protoc-gen-go-grpc v1.6.2
 // - protoc             v7.34.1
 // source: galaxy_repository.proto
 
@@ -23,6 +23,7 @@ const (
 	GalaxyRepository_GetLastDeployTime_FullMethodName = "/galaxy_repository.v1.GalaxyRepository/GetLastDeployTime"
 	GalaxyRepository_DiscoverHierarchy_FullMethodName = "/galaxy_repository.v1.GalaxyRepository/DiscoverHierarchy"
 	GalaxyRepository_WatchDeployEvents_FullMethodName = "/galaxy_repository.v1.GalaxyRepository/WatchDeployEvents"
+	GalaxyRepository_BrowseChildren_FullMethodName    = "/galaxy_repository.v1.GalaxyRepository/BrowseChildren"
 )
 
 // GalaxyRepositoryClient is the client API for GalaxyRepository service.
@@ -44,6 +45,11 @@ type GalaxyRepositoryClient interface {
 	// increasing per server start; gaps indicate the per-subscriber buffer dropped
 	// older events because the client was too slow.
 	WatchDeployEvents(ctx context.Context, in *WatchDeployEventsRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[DeployEvent], error)
+	// Returns the direct children of a parent object (or the root objects when
+	// `parent` is unset). Designed for OPC UA-style lazy expand: clients walk
+	// one level at a time instead of paging the full hierarchy. Filters mirror
+	// DiscoverHierarchy exactly. Backed by the same shared hierarchy cache.
+	BrowseChildren(ctx context.Context, in *BrowseChildrenRequest, opts ...grpc.CallOption) (*BrowseChildrenReply, error)
 }
 
 type galaxyRepositoryClient struct {
@@ -103,6 +109,16 @@ func (c *galaxyRepositoryClient) WatchDeployEvents(ctx context.Context, in *Watc
 // This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
 type GalaxyRepository_WatchDeployEventsClient = grpc.ServerStreamingClient[DeployEvent]
 
+func (c *galaxyRepositoryClient) BrowseChildren(ctx context.Context, in *BrowseChildrenRequest, opts ...grpc.CallOption) (*BrowseChildrenReply, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(BrowseChildrenReply)
+	err := c.cc.Invoke(ctx, GalaxyRepository_BrowseChildren_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // GalaxyRepositoryServer is the server API for GalaxyRepository service.
 // All implementations must embed UnimplementedGalaxyRepositoryServer
 // for forward compatibility.
@@ -122,6 +138,11 @@ type GalaxyRepositoryServer interface {
 	// increasing per server start; gaps indicate the per-subscriber buffer dropped
 	// older events because the client was too slow.
 	WatchDeployEvents(*WatchDeployEventsRequest, grpc.ServerStreamingServer[DeployEvent]) error
+	// Returns the direct children of a parent object (or the root objects when
+	// `parent` is unset). Designed for OPC UA-style lazy expand: clients walk
+	// one level at a time instead of paging the full hierarchy. Filters mirror
+	// DiscoverHierarchy exactly. Backed by the same shared hierarchy cache.
+	BrowseChildren(context.Context, *BrowseChildrenRequest) (*BrowseChildrenReply, error)
 	mustEmbedUnimplementedGalaxyRepositoryServer()
 }
 
@@ -144,6 +165,9 @@ func (UnimplementedGalaxyRepositoryServer) DiscoverHierarchy(context.Context, *D
 func (UnimplementedGalaxyRepositoryServer) WatchDeployEvents(*WatchDeployEventsRequest, grpc.ServerStreamingServer[DeployEvent]) error {
 	return status.Error(codes.Unimplemented, "method WatchDeployEvents not implemented")
 }
+func (UnimplementedGalaxyRepositoryServer) BrowseChildren(context.Context, *BrowseChildrenRequest) (*BrowseChildrenReply, error) {
+	return nil, status.Error(codes.Unimplemented, "method BrowseChildren not implemented")
+}
 func (UnimplementedGalaxyRepositoryServer) mustEmbedUnimplementedGalaxyRepositoryServer() {}
 func (UnimplementedGalaxyRepositoryServer) testEmbeddedByValue()                          {}
 
@@ -230,6 +254,24 @@ func _GalaxyRepository_WatchDeployEvents_Handler(srv interface{}, stream grpc.Se
 // This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
 type GalaxyRepository_WatchDeployEventsServer = grpc.ServerStreamingServer[DeployEvent]
 
+func _GalaxyRepository_BrowseChildren_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(BrowseChildrenRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(GalaxyRepositoryServer).BrowseChildren(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: GalaxyRepository_BrowseChildren_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(GalaxyRepositoryServer).BrowseChildren(ctx, req.(*BrowseChildrenRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // GalaxyRepository_ServiceDesc is the grpc.ServiceDesc for GalaxyRepository service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -249,6 +291,10 @@ var GalaxyRepository_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "DiscoverHierarchy",
 			Handler:    _GalaxyRepository_DiscoverHierarchy_Handler,
 		},
+		{
+			MethodName: "BrowseChildren",
+			Handler:    _GalaxyRepository_BrowseChildren_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{

clients/go/internal/generated/mxaccess_gateway.pb.go

@@ -725,9 +725,10 @@ func (SessionState) EnumDescriptor() ([]byte, []int) {
 	return file_mxaccess_gateway_proto_rawDescGZIP(), []int{8}
 }
 
-// Public request shape for QueryActiveAlarms. session_id is currently unused
+// Public request shape for QueryActiveAlarms.
-// (the snapshot is session-less) but reserved so a future per-session view
+// Clients may leave `session_id` empty; the gateway currently ignores it and
-// can be added without a wire break.
+// serves the session-less central-monitor cache. A future version may use it
+// to scope the snapshot to one session.
 type QueryActiveAlarmsRequest struct {
 	state               protoimpl.MessageState `protogen:"open.v1"`
 	SessionId           string                 `protobuf:"bytes,1,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"`

clients/go/internal/generated/mxaccess_gateway_grpc.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.6.1
+// - protoc-gen-go-grpc v1.6.2
 // - protoc             v7.34.1
 // source: mxaccess_gateway.proto
 
@@ -50,6 +50,9 @@ type MxAccessGatewayClient interface {
 	// reconnect to seed Part 9 client state, or to reconcile alarms that may
 	// have been missed during a transport blip. Streamed so callers can
 	// begin processing without buffering the full set.
+	// `QueryActiveAlarmsRequest.alarm_filter_prefix` optionally narrows the
+	// snapshot to alarms whose `alarm_full_reference` starts with the given
+	// prefix; an empty prefix returns the full set.
 	QueryActiveAlarms(ctx context.Context, in *QueryActiveAlarmsRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[ActiveAlarmSnapshot], error)
 }
 
@@ -180,6 +183,9 @@ type MxAccessGatewayServer interface {
 	// reconnect to seed Part 9 client state, or to reconcile alarms that may
 	// have been missed during a transport blip. Streamed so callers can
 	// begin processing without buffering the full set.
+	// `QueryActiveAlarmsRequest.alarm_filter_prefix` optionally narrows the
+	// snapshot to alarms whose `alarm_full_reference` starts with the given
+	// prefix; an empty prefix returns the full set.
 	QueryActiveAlarms(*QueryActiveAlarmsRequest, grpc.ServerStreamingServer[ActiveAlarmSnapshot]) error
 	mustEmbedUnimplementedMxAccessGatewayServer()
 }