Mark the first request when using Replace Online Library

Add a restoreToServer=1 query parameter so we can identify restores
server-side if necessary

chrome/content/zotero/xpcom/sync/syncAPIClient.js

@@ -825,7 +825,8 @@ Zotero.Sync.APIClient.prototype = {
 			'sort',
 			'direction',
 			'since',
-			'sincetime'
+			'sincetime',
+			'restoreToServer'
 		];
 		queryParams = {};
 		

chrome/content/zotero/xpcom/sync/syncEngine.js

@@ -2045,11 +2045,13 @@ Zotero.Sync.Data.Engine.prototype._restoreToServer = async function () {
 		let ObjectType = Zotero.Utilities.capitalize(objectType);
 		let objectsClass = Zotero.DataObjectUtilities.getObjectsClassForObjectType(objectType);
 		
-		// Get all object versions from the API
+		// Get all object versions from the API, marking the first request so that restores can
+		// be identified in server logs
 		let results = await this.apiClient.getVersions(
 			this.library.libraryType,
 			this.libraryTypeID,
-			objectType
+			objectType,
+			libraryVersion ? undefined : { restoreToServer: 1 }
 		);
 		if (libraryVersion && libraryVersion != results.libraryVersion) {
 			throw new Error(remoteUpdatedError

test/tests/syncEngineTest.js

@@ -5206,6 +5206,10 @@ describe("Zotero.Sync.Data.Engine", function () {
 			for (let type of types) {
 				let plural = Zotero.DataObjectUtilities.getObjectTypePlural(type);
 				let suffix = type == 'item' ? '&includeTrashed=1' : '';
+				// Only the first request of the restore is marked
+				if (type == types[0]) {
+					suffix += '&restoreToServer=1';
+				}
 				
 				let json = {};
 				json[objectJSON[type][0].key] = objectJSON[type][0].version;