Initial commit

src/PowderCoating.Core/Entities/TermsAcceptance.cs

@@ -0,0 +1,15 @@
+namespace PowderCoating.Core.Entities;
+
+/// <summary>
+/// Immutable audit record written once at registration. Never updated or deleted.
+/// </summary>
+public class TermsAcceptance
+{
+    public int Id { get; set; }
+    public string UserId { get; set; } = string.Empty;
+    public int CompanyId { get; set; }
+    public string TosVersion { get; set; } = string.Empty;
+    public DateTime AcceptedAt { get; set; } = DateTime.UtcNow;
+    public string? IpAddress { get; set; }
+    public string? UserAgent { get; set; }
+}