fix(epub): resolve PR #65 review comments for EPUB image rendering, path traversal validation, and security sanitization

src/NexusReader.UI.Shared/Services/FeatureSettings.cs

@@ -0,0 +1,11 @@
+namespace NexusReader.UI.Shared.Services;
+
+/// <summary>
+/// Strongly-typed feature settings for the client UI layer.
+/// Used to decouple the UI from raw IConfiguration to prevent exposure of sensitive settings.
+/// </summary>
+public class FeatureSettings
+{
+    public bool AllowRegistration { get; set; } = true;
+    public bool AllowPasswordReset { get; set; } = true;
+}