Add CRUD operations for claims

Distribution/Features/Claims/ClaimDTOs.cs

@@ -4,7 +4,14 @@ namespace Distribution.Features.Claims;
 
 public record CreateClaimRequest(Guid AgencyUserId, string Details);
 
-public record SettleClaimRequest(decimal SettlementAmount);
+// Only editable while the claim is still Open — once settled, the settlement amount is a
+// financial record and the claim details it was settled against should not silently change.
+public record UpdateClaimRequest(Guid AgencyUserId, string Details);
+
+public record SettleClaimRequest(
+    decimal SettlementAmount,
+    // TEMPORARY: required while auth doesn't resolve a logged-in user server-side — see testbug.md #28.
+    Guid? SettledByUserId = null);
 
 public record ClaimResponse(
     Guid Id,