Enhance live syncback process with improved reference handling and float precision

- Implemented ObjectValue carriers for service-level references, allowing for accurate serialization of non-direct child references during syncback.
- Updated `encodeService` to include explicit handling of attributes and tags, ensuring they are properly encoded and preventing data loss.
- Refactored `build_dom_from_chunks` to manage ObjectValue carriers and resolve references correctly, enhancing data integrity.
- Truncated float values to f32 precision in `UnresolvedValue::from_variant`, aligning with rbxl storage requirements and improving consistency.

These changes address critical issues in the live syncback process, enhancing reliability and data accuracy.

plugin/src/App/init.lua

@@ -642,13 +642,18 @@ function App:performSyncback()
 
 	local services = {}
 	local allChildren = {}
+	local allCarriers = {}
 	for _, className in SYNCBACK_SERVICES do
 		local ok, service = pcall(game.FindService, game, className)
 		if ok and service then
-			local chunk = encodeService(service)
+			local chunk, refTargets = encodeService(service)
 			for _, child in service:GetChildren() do
 				table.insert(allChildren, child)
 			end
+			for _, carrier in refTargets do
+				table.insert(allChildren, carrier)
+				table.insert(allCarriers, carrier)
+			end
 			table.insert(services, chunk)
 		end
 	end
@@ -658,6 +663,10 @@ function App:performSyncback()
 		data = SerializationService:SerializeInstancesAsync(allChildren)
 	end
 
+	for _, carrier in allCarriers do
+		carrier:Destroy()
+	end
+
 	local url = ("http://%s:%s/api/syncback"):format(host, port)
 	local body = Http.msgpackEncode({
 		protocolVersion = Config.protocolVersion,

plugin/src/ChangeBatcher/encodeService.lua

@@ -11,16 +11,26 @@ local SKIP_PROPERTIES = {
 	Archivable = true,
 }
 
+local EXCLUDE_PROPERTIES = {
+	Lighting = { ClockTime = true },
+}
+
 return function(service: Instance)
 	local properties = {}
 	local refs = {}
+	local children = service:GetChildren()
+	local refTargets = {}
 
 	local classDescriptor = RbxDom.findClassDescriptor(service.ClassName)
 	if classDescriptor then
+		local classExcludes = EXCLUDE_PROPERTIES[service.ClassName]
 		for propertyName, propertyMeta in pairs(classDescriptor.properties) do
 			if SKIP_PROPERTIES[propertyName] then
 				continue
 			end
+			if classExcludes and classExcludes[propertyName] then
+				continue
+			end
 			if propertyName == "Attributes" or propertyName == "Tags" then
 				continue
 			end
@@ -38,11 +48,12 @@ return function(service: Instance)
 
 					if descriptor.dataType == "Ref" then
 						local readOk, target = descriptor:read(service)
-						if readOk and target and target.Parent == service then
-							refs[propertyName] = {
-								name = target.Name,
-								className = target.ClassName,
-							}
+						if readOk and target then
+							local carrier = Instance.new("ObjectValue")
+							carrier.Name = propertyName
+							carrier.Value = target
+							table.insert(refTargets, carrier)
+							refs[propertyName] = #refTargets
 						end
 						continue
 					end
@@ -84,7 +95,8 @@ return function(service: Instance)
 
 	local chunk = {
 		className = service.ClassName,
-		childCount = #service:GetChildren(),
+		childCount = #children,
+		refTargetCount = #refTargets,
 	}
 	if next(properties) then
 		chunk.properties = properties
@@ -92,5 +104,5 @@ return function(service: Instance)
 	if next(refs) then
 		chunk.refs = refs
 	end
-	return chunk
+	return chunk, refTargets
 end