Fix campaign owner labels to always use display names

RpgRoller.Tests/Api/CampaignApiTests.cs

@@ -18,6 +18,7 @@ public sealed class CampaignApiTests : ApiTestBase
         var campaign = await PostAsync<CreateCampaignRequest, CampaignDetails>(gmClient, "/api/campaigns", new("Alpha Campaign", "dnd5e"));
 
         var gmCharacter = await PostAsync<CreateCharacterRequest, CharacterSummary>(gmClient, "/api/characters", new("Arin", campaign.Id));
+        Assert.Equal("Game Master", gmCharacter.OwnerDisplayName);
 
         var activateResponse = await gmClient.PostAsync($"/api/characters/{gmCharacter.Id}/activate", null);
         Assert.Equal(HttpStatusCode.OK, activateResponse.StatusCode);
@@ -39,10 +40,12 @@ public sealed class CampaignApiTests : ApiTestBase
         var details = await GetAsync<CampaignDetails>(gmClient, $"/api/campaigns/{campaign.Id}");
         Assert.Equal(campaign.Id, details.Id);
         Assert.Single(details.Characters);
+        Assert.Equal("Game Master", details.Characters[0].OwnerDisplayName);
 
         var currentCampaignCharacters = await GetAsync<IReadOnlyList<CharacterSummary>>(gmClient, "/api/characters");
         Assert.Single(currentCampaignCharacters);
         Assert.Equal(gmCharacter.Id, currentCampaignCharacters[0].Id);
+        Assert.Equal("Game Master", currentCampaignCharacters[0].OwnerDisplayName);
 
         var otherCampaign = await PostAsync<CreateCampaignRequest, CampaignDetails>(gmClient, "/api/campaigns", new("Beta Campaign", "d6"));
 
@@ -96,6 +99,11 @@ public sealed class CampaignApiTests : ApiTestBase
 
         var transferResult = await PutAsync<UpdateCharacterRequest, CharacterSummary>(gmClient, $"/api/characters/{character.Id}", new("Grouped Hero", campaign.Id, "receiver2"));
         Assert.Equal("Grouped Hero", transferResult.Name);
+        Assert.Equal("Receiver", transferResult.OwnerDisplayName);
+
+        var gmCampaignView = await GetAsync<CampaignDetails>(gmClient, $"/api/campaigns/{campaign.Id}");
+        var gmViewedCharacter = Assert.Single(gmCampaignView.Characters, c => c.Id == character.Id);
+        Assert.Equal("Receiver", gmViewedCharacter.OwnerDisplayName);
 
         var ownerActivate = await ownerClient.PostAsync($"/api/characters/{character.Id}/activate", null);
         Assert.Equal(HttpStatusCode.BadRequest, ownerActivate.StatusCode);