Remove Scenes, group beats by multiple characters; strip comments repo-wide

Drop the Scene entity/grouping in favor of chapters carrying prose directly
and beats belonging to many characters. Add markdown editor + character
multi-select components to the web client. Remove all XML doc and inline
comments across the touched C#/TS/CSS files in favor of self-documenting
names, and record that convention in CLAUDE.md. Add .mcp.json (local MCP
server config, no secrets) and ignore .idea/.

tests/Novelly.Api.Tests/ServiceTestFixture.cs

@@ -3,20 +3,10 @@ using Novelly.Api.Chapters;
 using Novelly.Api.Characters;
 using Novelly.Api.Projects;
 using Novelly.Api.Questions;
-using Novelly.Api.Scenes;
 using Novelly.Api.Tags;
 
 namespace Novelly.Api.Tests;
 
-/// <summary>
-/// Shared plumbing for the service tests: a fresh in-memory database and a matching set
-/// of services per test.
-/// </summary>
-/// <remarks>
-/// The setup lives in <c>[SetUp]</c> rather than a constructor or field initialisers
-/// because NUnit builds one fixture instance for the whole class — anything created once
-/// would leak state from one test into the next.
-/// </remarks>
 public abstract class ServiceTestFixture
 {
     protected TestDatabase Db { get; private set; } = null!;
@@ -24,7 +14,6 @@ public abstract class ServiceTestFixture
     protected ProjectService Projects { get; private set; } = null!;
     protected CharacterService Characters { get; private set; } = null!;
     protected ChapterService Chapters { get; private set; } = null!;
-    protected SceneService Scenes { get; private set; } = null!;
     protected BeatService Beats { get; private set; } = null!;
     protected CharacterArcService Arcs { get; private set; } = null!;
     protected OpenQuestionService Questions { get; private set; } = null!;
@@ -32,7 +21,6 @@ public abstract class ServiceTestFixture
     protected CapturingLogger<ProjectService> ProjectLogs { get; private set; } = null!;
     protected CapturingLogger<CharacterService> CharacterLogs { get; private set; } = null!;
     protected CapturingLogger<ChapterService> ChapterLogs { get; private set; } = null!;
-    protected CapturingLogger<SceneService> SceneLogs { get; private set; } = null!;
     protected CapturingLogger<BeatService> BeatLogs { get; private set; } = null!;
     protected CapturingLogger<TagService> TagLogs { get; private set; } = null!;
     protected CapturingLogger<CharacterArcService> ArcLogs { get; private set; } = null!;
@@ -47,7 +35,6 @@ public abstract class ServiceTestFixture
         ProjectLogs = new CapturingLogger<ProjectService>();
         CharacterLogs = new CapturingLogger<CharacterService>();
         ChapterLogs = new CapturingLogger<ChapterService>();
-        SceneLogs = new CapturingLogger<SceneService>();
         BeatLogs = new CapturingLogger<BeatService>();
         ArcLogs = new CapturingLogger<CharacterArcService>();
         QuestionLogs = new CapturingLogger<OpenQuestionService>();
@@ -58,7 +45,6 @@ public abstract class ServiceTestFixture
             Db.Context, Tags, CharacterLogs,
             new CreateCharacterRequestValidator(), new UpdateCharacterRequestValidator(), new CreateRelationshipRequestValidator());
         Chapters = new ChapterService(Db.Context, Tags, ChapterLogs, new CreateChapterRequestValidator(), new UpdateChapterRequestValidator());
-        Scenes = new SceneService(Db.Context, SceneLogs, new CreateSceneRequestValidator(), new UpdateSceneRequestValidator());
         Beats = new BeatService(
             Db.Context, Tags, BeatLogs,
             new CreateBeatRequestValidator(), new UpdateBeatRequestValidator(), new ReorderBeatsRequestValidator());
@@ -72,7 +58,6 @@ public abstract class ServiceTestFixture
         OnSetUp();
     }
 
-    /// <summary>Runs after the services exist, for per-class seed data.</summary>
     protected virtual void OnSetUp()
     {
     }