Auto-fix furni asset ownership after import

After each single or batch import, chown the swf/icon/nitro asset
directories and the FurnitureData.json folders to www-data:www-data so
nginx and the emulator can read newly written files. Best-effort and
non-blocking; the API response reports which folders were fixed.

src/app/api/admin/import/furni/route.ts

@@ -17,6 +17,7 @@ import {
 	deleteImportedItem,
 	downloadFile,
 	ensureDirectories,
+	ensureFurniOwnership,
 	IMPORTED_PAGE_CAPTION_SAVE,
 	importSingleFurni,
 	reconcileImportedOfferIds,
@@ -407,6 +408,9 @@ export const POST = withAdmin(
 			// Reconcile offer_id with the furnidata sprite id across the tree
 			const reconciled = await reconcileImportedOfferIds();
 
+			// Keep asset + furnidata folders readable by the web server
+			const ownership = await ensureFurniOwnership();
+
 			const succeeded = results.filter((r) => r.ok).length;
 			const failed = results.filter((r) => !r.ok).length;
 
@@ -416,6 +420,7 @@ export const POST = withAdmin(
 				failed,
 				results,
 				offerIdsFixed: reconciled.fixed,
+				ownershipFixed: ownership.fixed,
 			});
 		}
 
@@ -468,6 +473,9 @@ export const POST = withAdmin(
 		// Reconcile offer_id with the furnidata sprite id across the tree
 		const reconciled = await reconcileImportedOfferIds();
 
+		// Keep asset + furnidata folders readable by the web server
+		const ownership = await ensureFurniOwnership();
+
 		logAudit({
 			userId: ctx.session.user.id,
 			action: "furni_import",
@@ -489,6 +497,7 @@ export const POST = withAdmin(
 			id: result.itemId,
 			catalogItemId: result.catalogItemId,
 			offerIdsFixed: reconciled.fixed,
+			ownershipFixed: ownership.fixed,
 			spriteCount: result.spriteCount,
 			warnings: result.warnings,
 		});