refactor: Use new contributor field

Author: ChrisChV

src/library-authoring/data/api.mocks.ts

@@ -1267,14 +1267,14 @@ const mockContributor = (username: string): api.LibraryPublishContributor => ({
 
 mockLibraryBlockDraftHistory.data = [
   {
-    changedBy: mockContributor('test_user_1'),
+    contributor: mockContributor('test_user_1'),
     changedAt: '2026-03-16T11:00:00Z',
     title: 'Electron Arcs',
     action: 'edited',
     itemType: 'html',
   },
   {
-    changedBy: mockContributor('test_user_2'),
+    contributor: mockContributor('test_user_2'),
     changedAt: '2026-03-13T10:00:00Z',
     title: 'More on Quarks',
     action: 'renamed',
@@ -1330,7 +1330,7 @@ export async function mockLibraryBlockPublishHistoryEntries(
 }
 mockLibraryBlockPublishHistoryEntries.data = [
   {
-    changedBy: mockContributor('test_user'),
+    contributor: mockContributor('test_user'),
     changedAt: '2026-03-10T09:00:00Z',
     title: 'Protons',
     action: 'edited',
@@ -1365,14 +1365,14 @@ mockLibraryBlockCreationEntry.usageKeyThatNeverLoads = 'lb:Axim:infiniteLoading:
 mockLibraryBlockCreationEntry.usageKey = 'lb:Axim:TEST1:html:571fe018-f3ce-45c9-8f53-5dafcb422fd1';
 mockLibraryBlockCreationEntry.usageKeyEmpty = 'lb:Axim:TEST2:html:571fe018-f3ce-45c9-8f53-5dafcb422fd2';
 mockLibraryBlockCreationEntry.data = {
-  changedBy: mockContributor('author'),
+  contributor: mockContributor('author'),
   changedAt: '2024-01-01T00:00:00Z',
   title: 'Introduction to Testing 1',
   itemType: 'html',
   action: 'created',
 } satisfies api.LibraryHistoryEntry;
 mockLibraryBlockCreationEntry.dataEmpty = {
-  changedBy: mockContributor('Author'),
+  contributor: mockContributor('Author'),
   changedAt: '2024-01-01T00:00:00Z',
   title: 'Introduction to Testing 2',
   itemType: 'html',
@@ -1404,14 +1404,14 @@ mockLibraryContainerDraftHistory.containerKey = 'lct:Axim:TEST1:unit:571fe018-f3
 mockLibraryContainerDraftHistory.containerKeyEmpty = 'lct:Axim:TEST2:unit:571fe018-f3ce-45c9-8f53-5dafcb422fd2';
 mockLibraryContainerDraftHistory.data = [
   {
-    changedBy: mockContributor('container_user_1'),
+    contributor: mockContributor('container_user_1'),
     changedAt: '2026-03-16T11:00:00Z',
     title: 'Intro Unit',
     action: 'edited',
     itemType: 'unit',
   },
   {
-    changedBy: mockContributor('container_user_2'),
+    contributor: mockContributor('container_user_2'),
     changedAt: '2026-03-13T10:00:00Z',
     title: 'Unit Renamed',
     action: 'renamed',
@@ -1485,14 +1485,14 @@ mockLibraryContainerCreationEntry.usageKeyThatNeverLoads = 'lct:Axim:TEST1:unit:
 mockLibraryContainerCreationEntry.usageKey = 'lct:Axim:TEST1:unit:571fe018-f3ce-45c9-8f53-5dafcb422fd1';
 mockLibraryContainerCreationEntry.usageKeyEmpty = 'lct:Axim:TEST2:unit:571fe018-f3ce-45c9-8f53-5dafcb422fd2';
 mockLibraryContainerCreationEntry.data = {
-  changedBy: mockContributor('author'),
+  contributor: mockContributor('author'),
   changedAt: '2024-01-01T00:00:00Z',
   title: 'Introduction to Testing Unit 1',
   itemType: 'unit',
   action: 'created',
 } satisfies api.LibraryHistoryEntry;
 mockLibraryContainerCreationEntry.dataEmpty = {
-  changedBy: mockContributor('Author'),
+  contributor: mockContributor('Author'),
   changedAt: '2024-01-01T00:00:00Z',
   title: 'Introduction to Testing Unit 2',
   itemType: 'unit',

src/library-authoring/data/api.ts

@@ -1009,7 +1009,7 @@ export interface LibraryPublishContributor {
 }
 
 export interface LibraryHistoryEntry {
-  changedBy: LibraryPublishContributor;
+  contributor: LibraryPublishContributor;
   changedAt: string;
   title: string;
   itemType: string;

src/library-authoring/generic/history-log/HistoryLog.test.tsx

@@ -104,12 +104,12 @@ describe('<HistoryComponentLog />', () => {
     expect(await findByDeepTextContent(/Author created.*Introduction to Testing 1/i)).toBeInTheDocument();
   });
 
-  it('shows fallback "Author" for draft entry when changedBy has no username', async () => {
+  it('shows fallback "Author" for draft entry when contributor has no username', async () => {
     const user = userEvent.setup();
     const originalData = mockLibraryBlockDraftHistory.data;
     mockLibraryBlockDraftHistory.data = [
       {
-        changedBy: mockContributorNoUsername(),
+        contributor: mockContributorNoUsername(),
         changedAt: '2026-03-16T11:00:00Z',
         title: 'Anonymous Component',
         itemType: 'html',
@@ -141,7 +141,7 @@ describe('<HistoryComponentLog />', () => {
     const originalData = mockLibraryBlockDraftHistory.data;
     mockLibraryBlockDraftHistory.data = [
       {
-        changedBy: {
+        contributor: {
           username: 'creator_user',
           profileImageUrls: {
             full: 'icon/mock/path',
@@ -224,7 +224,7 @@ describe('<HistoryContainerLog />', () => {
     const originalData = mockLibraryContainerDraftHistory.data;
     mockLibraryContainerDraftHistory.data = [
       {
-        changedBy: {
+        contributor: {
           username: 'creator_user',
           profileImageUrls: {
             full: 'icon/mock/path',

src/library-authoring/generic/history-log/HistoryLog.tsx

@@ -56,7 +56,7 @@ export const HistoryComponentLog = ({ componentId }: { componentId: string; }) =
       )}
       {creationEntry && (
         <HistoryCreatedLogGroup
-          user={creationEntry.changedBy?.username}
+          user={creationEntry.contributor?.username}
           displayName={creationEntry.title}
           itemType={creationEntry.itemType}
           createdAt={creationEntry.changedAt}
@@ -111,7 +111,7 @@ export const HistoryContainerLog = ({ containerId }: { containerId: string; }) =
       )}
       {creationEntry && (
         <HistoryCreatedLogGroup
-          user={creationEntry.changedBy?.username}
+          user={creationEntry.contributor?.username}
           displayName={creationEntry.title}
           itemType={creationEntry.itemType}
           createdAt={creationEntry.changedAt}

src/library-authoring/generic/history-log/HistoryLogGroup.tsx

@@ -128,8 +128,8 @@ const HistoryLogGroupEntries = ({
           <div key={entry.changedAt}>
             <Stack direction="horizontal" gap={2} className="ml-1.5">
               <ContributorAvatar
-                username={entry.changedBy?.username || intl.formatMessage(messages.historyEntryDefaultUser)}
-                src={entry.changedBy.profileImageUrls.medium}
+                username={entry.contributor?.username || intl.formatMessage(messages.historyEntryDefaultUser)}
+                src={entry.contributor.profileImageUrls.medium}
                 className="history-log-group-avatar small-avatar"
                 size="sm"
               />
@@ -138,7 +138,7 @@ const HistoryLogGroupEntries = ({
                   <FormattedMessage
                     {...entryMessage}
                     values={{
-                      user: entry.changedBy.username ?? intl.formatMessage(messages.historyEntryDefaultUser),
+                      user: entry.contributor.username ?? intl.formatMessage(messages.historyEntryDefaultUser),
                       displayName: <span className="history-log-title text-truncate">{entry.title}</span>,
                       icon: <Icon src={getItemIcon(entry.itemType)} />,
                     }}