Enhance script handling and UI consistency

- Added support for encoding the RunContext property in the Script class to determine file suffixes (.server.luau, .client.luau, .plugin.luau, .legacy.luau).
- Updated the Confirming.lua file to improve UI consistency in the confirmation message display.
- Modified snapshot middleware and syncback logic to accommodate new file extensions and ensure proper handling of plugin scripts.
- Refactored tests to align with the new naming conventions for script suffixes and improved path uniqueness checks.

plugin/src/App/StatusPages/Confirming.lua

@@ -327,18 +327,18 @@ function ConfirmingPage:render()
 					self:setState({ showingAcceptConfirm = false })
 				end,
 			}, {
-			Content = e("Frame", {
-				Size = UDim2.fromScale(1, 1),
-				BackgroundColor3 = theme.BackgroundColor,
-				BorderSizePixel = 0,
-			}, {
-				Message = e("TextLabel", {
-					Text = string.format(
-						"%d item%s not been reviewed.\n\nAccept selected changes and skip the rest?",
-						self.state.unselectedCount,
-						self.state.unselectedCount == 1 and " has" or "s have"
-					),
-					FontFace = theme.Font.Main,
+				Content = e("Frame", {
+					Size = UDim2.fromScale(1, 1),
+					BackgroundColor3 = theme.BackgroundColor,
+					BorderSizePixel = 0,
+				}, {
+					Message = e("TextLabel", {
+						Text = string.format(
+							"%d item%s not been reviewed.\n\nAccept selected changes and skip the rest?",
+							self.state.unselectedCount,
+							self.state.unselectedCount == 1 and " has" or "s have"
+						),
+						FontFace = theme.Font.Main,
 						TextSize = theme.TextSize.Body,
 						TextColor3 = theme.TextColor,
 						TextWrapped = true,

plugin/src/ChangeBatcher/encodeInstance.lua

@@ -161,6 +161,18 @@ encodeInstance = function(instance, parentId, _skipPathCheck)
 			Log.warn("Could not find Source property descriptor for {:?}", instance)
 			return nil
 		end
+
+		-- For Script class specifically, also encode RunContext property
+		-- This determines the file suffix (.server.luau, .client.luau, .plugin.luau, .legacy.luau)
+		if instance.ClassName == "Script" then
+			local runContextDescriptor = RbxDom.findCanonicalPropertyDescriptor("Script", "RunContext")
+			if runContextDescriptor then
+				local encodeSuccess, encodeResult = encodeProperty(instance, "RunContext", runContextDescriptor)
+				if encodeSuccess and encodeResult ~= nil then
+					properties.RunContext = encodeResult
+				end
+			end
+		end
 	elseif not DIRECTORY_CLASSES[instance.ClassName] then
 		-- For non-directory, non-script classes, encode all relevant properties
 		local classDescriptor = RbxDom.findClassDescriptor(instance.ClassName)