Fix unit test build failures after logo service and pricing changes

DepositsController and GiftCertificatesController gained a required
ICompanyLogoService constructor parameter in the PDF logo fix; their
test factories were not updated and failed to compile on Jenkins.
Added Mock.Of<ICompanyLogoService>() to both factory methods and the
missing using directive to DepositsControllerTests.

PricingCalculationService now only charges oven cost for items that
have explicit coating layers (Coats collection non-empty), because
sandblast/prep-only and labor items do not go in the oven. Two tests
that tested the old "all items count toward oven fraction" logic were
updated to include a single coat entry on each item, which restores
the expected oven fraction math without changing the tested behaviour.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/PowderCoating.UnitTests/PricingCalculationServiceTests.cs

@@ -417,7 +417,8 @@ public class PricingCalculationServiceTests
                 IsAiItem = true,
                 ManualUnitPrice = 200m,
                 Quantity = 1m,
-                SurfaceAreaSqFt = 50m
+                SurfaceAreaSqFt = 50m,
+                Coats = new List<CreateQuoteItemCoatDto> { new() { CoatName = "Base Coat", Sequence = 1 } }
             },
             new()
             {
@@ -425,7 +426,8 @@ public class PricingCalculationServiceTests
                 IsLaborItem = true,
                 Quantity = 1m,
                 SurfaceAreaSqFt = 50m,
-                EstimatedMinutes = 60
+                EstimatedMinutes = 60,
+                Coats = new List<CreateQuoteItemCoatDto> { new() { CoatName = "Base Coat", Sequence = 1 } }
             }
         };
 
@@ -470,14 +472,16 @@ public class PricingCalculationServiceTests
                 Description = "AI item",
                 IsAiItem = true,
                 ManualUnitPrice = 100m,
-                Quantity = 1m
+                Quantity = 1m,
+                Coats = new List<CreateQuoteItemCoatDto> { new() { CoatName = "Base Coat", Sequence = 1 } }
             },
             new()
             {
                 Description = "Shelf item",
                 IsSalesItem = true,
                 ManualUnitPrice = 40m,
-                Quantity = 1m
+                Quantity = 1m,
+                Coats = new List<CreateQuoteItemCoatDto> { new() { CoatName = "Base Coat", Sequence = 1 } }
             }
         };