Add UserActionLog and enhance registry features

- Introduced `UserActionLog` entity to track user actions.
- Replaced `CanBeSecondHand` with `PreferSecondHand` property.
- Added `ShowBankAccountName` to `RegistrySettings`.
- Updated models and migrations for new properties.
- Enhanced `RegistryService` with user action logging and item details.
- Redesigned `Home.razor` with a grid layout and modal for registries.
- Added `RegistryActionLog.razor` for admin action logs.
- Improved `RegistryPublic.razor` with purchaser/contributor details.
- Replaced sidebar with `TopBar.razor` for responsive navigation.
- Updated CSS for new components and improved responsiveness.

src/BirthList.Domain/Entities/Registry.cs

@@ -18,4 +18,5 @@ public class Registry
     public ICollection<RegistryItem> Items { get; set; } = [];
     public ICollection<RegistryVisit> Visits { get; set; } = [];
     public ICollection<RegistryAdminInvite> AdminInvites { get; set; } = [];
+    public ICollection<UserActionLog> ActionLogs { get; set; } = [];
 }