fix: only record structure update after txn commits

Move `this.structureUpdate = structures` out of the transactionSync
callback so it is only set on a confirmed commit. Setting it inside the
callback left it dangling on an aborted txn, which could flag a spurious
HAS_STRUCTURE_UPDATE in the audit log for a structure that was never
persisted. Addresses review feedback.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: kriszyp

resources/RecordEncoder.ts

@@ -246,12 +246,18 @@ export class RecordEncoder extends StructonEncoder {
 							return false;
 						}
 						txn.putSync(sharedStructuresKey, structures);
-						this.structureUpdate = structures;
 						return true;
 					},
 					{ retryOnBusy: true }
 				);
-				return committed === true ? true : false;
+				// Only record the structure update once the txn has actually committed. Setting it
+				// inside the callback would leave it dangling on an aborted txn and could flag a
+				// HAS_STRUCTURE_UPDATE in the audit log for a structure that was never persisted.
+				if (committed === true) {
+					this.structureUpdate = structures;
+					return true;
+				}
+				return false;
 			} else {
 				const result = superSaveStructures.call(this, structures, isCompatible);
 				this.structureUpdate = structures;