feat(drive): move UI to {created,updated}_by

frontend/src/routes/favorites/+page.svelte

@@ -40,7 +40,11 @@
 	const entries = $derived(
 		raw.map((it): ResourceEntry => {
 			const isFile = it.resource_type === 'file';
-			const ownerId = it.resource.owner_id ?? null;
+			// §14 provenance — prefer `created_by` (who put the item
+			// into the system) over the deprecated `owner_id`. Fall
+			// back to `owner_id` for pre-D7 rows whose `created_by`
+			// column wasn't backfilled.
+			const ownerId = it.resource.created_by ?? it.resource.owner_id ?? null;
 			return {
 				id: it.resource.id,
 				name: it.resource.name,
@@ -106,7 +110,7 @@
 			});
 			raw = reset ? page.items : [...raw, ...page.items];
 			cursor = page.next_cursor;
-			void owners.resolve(page.items.map((i) => i.resource.owner_id));
+			void owners.resolve(page.items.map((i) => i.resource.created_by ?? i.resource.owner_id));
 		} catch (e) {
 			console.error('favorites: load error', e);
 			error = t('errors_loadFailed', 'Failed to load items');

frontend/src/routes/favorites/page.test.ts

@@ -42,6 +42,8 @@ function withOneFile() {
 					modified_at: 0,
 					name: 'photo.png',
 					owner_id: 'me',
+					created_by: 'me',
+					updated_by: 'me',
 					folder_id: 'root',
 					path: '/photo.png',
 					size: 10,

frontend/src/routes/files/[...path]/+page.svelte

@@ -1797,7 +1797,9 @@
 		<div class="grid-meta">
 			<span class="grid-meta__date">{relativeTimeAgo(folder.modified_at)}</span>
 		</div>
-		<div class="owner-cell">{ownerLabel(folder.owner_id, session.user?.id ?? null)}</div>
+		<div class="owner-cell">
+			{ownerLabel(folder.created_by ?? folder.owner_id, session.user?.id ?? null)}
+		</div>
 		<div class="type-cell">{t('files.file_types.folder', 'Folder')}</div>
 		<div class="size-cell">—</div>
 		<div class="date-cell">{formatDate(folder.modified_at)}</div>
@@ -1927,7 +1929,9 @@
 			<span class="grid-meta__date">{relativeTimeAgo(file.modified_at)}</span>
 			{#if file.size != null}<span class="grid-meta__size">{formatBytes(file.size)}</span>{/if}
 		</div>
-		<div class="owner-cell">{ownerLabel(file.owner_id, session.user?.id ?? null)}</div>
+		<div class="owner-cell">
+			{ownerLabel(file.created_by ?? file.owner_id, session.user?.id ?? null)}
+		</div>
 		<div class="type-cell">{typeLabel(file.category)}</div>
 		<div class="size-cell">{file.size != null ? formatBytes(file.size) : ''}</div>
 		<div class="date-cell">{formatDate(file.modified_at)}</div>

frontend/src/routes/files/page.test.ts

@@ -91,6 +91,8 @@ function fileItem(id: string, name: string) {
 		modified_at: 0,
 		name,
 		owner_id: 'me',
+		created_by: 'me',
+		updated_by: 'me',
 		folder_id: 'home',
 		path: '/' + name,
 		size: 4,
@@ -111,6 +113,8 @@ function folderItem(id: string, name: string) {
 		modified_at: 0,
 		name,
 		owner_id: 'me',
+		created_by: 'me',
+		updated_by: 'me',
 		parent_id: 'home',
 		path: '/' + name,
 		etag: 'e'

frontend/src/routes/photos/page.test.ts

@@ -35,6 +35,8 @@ function photo(id: string) {
 		modified_at: 0,
 		name: id + '.jpg',
 		owner_id: 'me',
+		created_by: 'me',
+		updated_by: 'me',
 		folder_id: 'home',
 		path: '/' + id + '.jpg',
 		size: 100,

frontend/src/routes/recent/+page.svelte

@@ -42,7 +42,11 @@
 	const entries = $derived(
 		raw.map((it): ResourceEntry => {
 			const isFile = it.resource_type === 'file';
-			const ownerId = it.resource.owner_id ?? null;
+			// §14 provenance — Recent's mental model is "who touched
+			// this recently", so `updated_by` (the last mutator) is
+			// preferred over `created_by` (who put it in). Fall back
+			// to `owner_id` for pre-D7 rows with no provenance.
+			const ownerId = it.resource.updated_by ?? it.resource.owner_id ?? null;
 			return {
 				id: it.resource.id,
 				name: it.resource.name,
@@ -118,7 +122,7 @@
 			});
 			raw = reset ? page.items : [...raw, ...page.items];
 			cursor = page.next_cursor;
-			void owners.resolve(page.items.map((i) => i.resource.owner_id));
+			void owners.resolve(page.items.map((i) => i.resource.updated_by ?? i.resource.owner_id));
 		} catch (e) {
 			console.error('recent: load error', e);
 			error = t('errors_loadFailed', 'Failed to load items');

frontend/src/routes/recent/page.test.ts

@@ -46,6 +46,8 @@ function withOneFile() {
 					modified_at: 0,
 					name: 'notes.txt',
 					owner_id: 'me',
+					created_by: 'me',
+					updated_by: 'me',
 					folder_id: 'root',
 					path: '/notes.txt',
 					size: 4,

frontend/src/routes/shared/page.test.ts

@@ -47,6 +47,8 @@ function grantItem() {
 			modified_at: 0,
 			name: 'Docs',
 			owner_id: 'me',
+			created_by: 'me',
+			updated_by: 'me',
 			parent_id: null,
 			path: '/Docs',
 			etag: 'e'