Fix ownership reconcile on the batch import route

The Studio's batch import uses /api/admin/import/furni/batch, which never
ran the offer_id reconciliation or the www-data ownership fix (only the
single/legacy-batch route did). Run both after the batch finishes and
report the counts in the batch_complete SSE event.

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

@@ -6,7 +6,9 @@ import { getSource } from "@/lib/services/clone-sources";
 import { appendFurniEntriesBatch } from "@/lib/services/furni-data";
 import {
 	ensureDirectories,
+	ensureFurniOwnership,
 	importSingleFurni,
+	reconcileImportedOfferIds,
 } from "@/lib/services/furni-import";
 import { rcon } from "@/lib/services/rcon";
 import type { ImportSingleResult } from "@/types/furni";
@@ -211,11 +213,26 @@ export const POST = withAdmin(
 					}
 				}
 
+				// Reconcile offer_id and fix asset ownership across the whole tree
+				let offerIdsFixed = 0;
+				let ownershipFixed: string[] = [];
+				try {
+					offerIdsFixed = (await reconcileImportedOfferIds()).fixed;
+					ownershipFixed = (await ensureFurniOwnership()).fixed;
+				} catch (err) {
+					console.warn(
+						"[import-furni] Post-import reconcile/ownership failed:",
+						(err as Error).message,
+					);
+				}
+
 				send({
 					type: "batch_complete",
 					succeeded,
 					failed,
 					warnings: withWarnings,
+					offerIdsFixed,
+					ownershipFixed,
 					duration: Date.now() - startTime,
 				});