feat: implement I-9 and W-4 tax form handling with dedicated use cases and mappers

apps/mobile/packages/domain/lib/src/adapters/profile/tax_form_adapter.dart

@@ -15,18 +15,36 @@ class TaxFormAdapter {
     DateTime? createdAt,
     DateTime? updatedAt,
   }) {
-    return TaxForm(
-      id: id,
-      type: _stringToType(type),
-      title: title,
-      subtitle: subtitle,
-      description: description,
-      status: _stringToStatus(status),
-      staffId: staffId,
-      formData: formData is Map ? Map<String, dynamic>.from(formData) : null,
-      createdAt: createdAt,
-      updatedAt: updatedAt,
-    );
+    final TaxFormType formType = _stringToType(type);
+    final TaxFormStatus formStatus = _stringToStatus(status);
+    final Map<String, dynamic> formDetails =
+        formData is Map ? Map<String, dynamic>.from(formData as Map) : <String, dynamic>{};
+
+    if (formType == TaxFormType.i9) {
+      return I9TaxForm(
+        id: id,
+        title: title,
+        subtitle: subtitle,
+        description: description,
+        status: formStatus,
+        staffId: staffId,
+        formData: formDetails,
+        createdAt: createdAt,
+        updatedAt: updatedAt,
+      );
+    } else {
+      return W4TaxForm(
+        id: id,
+        title: title,
+        subtitle: subtitle,
+        description: description,
+        status: formStatus,
+        staffId: staffId,
+        formData: formDetails,
+        createdAt: createdAt,
+        updatedAt: updatedAt,
+      );
+    }
   }
 
   static TaxFormType _stringToType(String? value) {