chore: Move the drift_offline_first to legacy in favor of Serverpod implementation (#32)

legacy/drift_offline_sync/test/crdt/crdt_test_utils.dart

@@ -0,0 +1,27 @@
+import 'package:drift_offline_sync/drift_offline_sync.dart';
+
+extension CrdtDataEntryListExtensions on List<CrdtDataEntry> {
+  CrdtDataEntry removeEntry(String columnName) {
+    final entry = firstWhere((e) => e.columnName == columnName);
+    remove(entry);
+    return entry;
+  }
+}
+
+/// Test helpers for CRDT tests.
+///
+/// Use [sortedEntries] when comparing [CrdtDataEntry] lists, since entry order
+/// is not guaranteed by the API or database.
+extension CrdtDataEntryTestExtensions on Iterable<CrdtDataEntry> {
+  /// Returns a list of entries sorted by (tblName, rowId, columnName) for
+  /// order-independent comparison in tests.
+  List<CrdtDataEntry> get sortedEntries {
+    return toList()..sort((a, b) {
+      final c = a.tblName.compareTo(b.tblName);
+      if (c != 0) return c;
+      final r = a.rowId.compareTo(b.rowId);
+      if (r != 0) return r;
+      return a.columnName.compareTo(b.columnName);
+    });
+  }
+}