feat: update shift repository implementation and add shift adapter

apps/mobile/packages/domain/lib/krow_domain.dart

@@ -29,6 +29,7 @@ export 'src/entities/events/work_session.dart';
 
 // Shifts
 export 'src/entities/shifts/shift.dart';
+export 'src/adapters/shifts/shift_adapter.dart';
 
 // Orders & Requests
 export 'src/entities/orders/order_type.dart';

apps/mobile/packages/domain/lib/src/adapters/shifts/shift_adapter.dart

@@ -0,0 +1,10 @@
+import '../../entities/shifts/shift.dart';
+
+/// Adapter for Shift related data.
+class ShiftAdapter {
+  
+  // Note: Conversion logic will likely live in RepoImpl or here if we pass raw objects.
+  // Given we are dealing with generated types that aren't exported by domain, 
+  // we might put the logic in Repo or make this accept dynamic/Map if strictly required.
+  // For now, placeholders or simple status helpers.
+}