namespace IceImportBLL.FieldResolvers; // ValueType = 3 (Expression). Legacy never implemented this either — real support is deferred to // Phase 5's rule-engine tie-in per the plan. public class ExpressionValueResolver : IIceFieldValueResolver { public int ValueType => 3; public Task ResolveAsync(FieldResolutionContext ctx, CancellationToken ct) => throw new NotSupportedException("Expression-based field mapping (ValueType 3) is not yet implemented."); }