feat: add BindFields property to TraxQueryModelAttribute

src/Trax.Effect/Attributes/FieldBindingBehavior.cs

@@ -0,0 +1,19 @@
+namespace Trax.Effect.Attributes;
+
+/// <summary>
+/// Controls how fields are bound when generating the GraphQL ObjectType
+/// for an entity marked with <see cref="TraxQueryModelAttribute"/>.
+/// </summary>
+public enum FieldBindingBehavior
+{
+    /// <summary>
+    /// All public properties and methods are exposed as GraphQL fields (default HotChocolate behavior).
+    /// </summary>
+    Implicit = 0,
+
+    /// <summary>
+    /// Only properties decorated with <see cref="System.ComponentModel.DataAnnotations.Schema.ColumnAttribute"/>
+    /// are exposed. Properties with <c>[NotMapped]</c>, methods, and non-column public members are excluded.
+    /// </summary>
+    Explicit = 1,
+}

src/Trax.Effect/Attributes/TraxQueryModelAttribute.cs

@@ -59,6 +59,15 @@ public class TraxQueryModelAttribute : Attribute
     /// </summary>
     public bool Projection { get; init; } = true;
 
+    /// <summary>
+    /// Controls how fields are bound on the generated GraphQL ObjectType.
+    /// When <see cref="FieldBindingBehavior.Explicit"/>, only properties with
+    /// <see cref="System.ComponentModel.DataAnnotations.Schema.ColumnAttribute"/>
+    /// are exposed; <c>[NotMapped]</c> properties, methods, and other public members are excluded.
+    /// Defaults to <see cref="FieldBindingBehavior.Implicit"/> (all public properties exposed).
+    /// </summary>
+    public FieldBindingBehavior BindFields { get; init; } = FieldBindingBehavior.Implicit;
+
     /// <summary>
     /// Groups this field under a sub-namespace in the GraphQL schema.
     /// When set, the field appears under <c>discover { namespace { field } }</c>