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/.

src/Novelly.Api/Characters/Character.cs

@@ -1,12 +1,9 @@
+using Novelly.Api.Beats;
 using Novelly.Api.Projects;
 using Novelly.Api.Tags;
 
 namespace Novelly.Api.Characters;
 
-/// <summary>
-/// A character dossier. Every field beyond <see cref="Name"/> is optional so a writer can
-/// start with a name and fill the sheet in as the character comes into focus.
-/// </summary>
 public class Character
 {
     public Guid Id { get; set; } = Guid.NewGuid();
@@ -16,10 +13,6 @@ public class Character
     public string Name { get; set; } = string.Empty;
     public CharacterRole Role { get; set; } = CharacterRole.Supporting;
 
-    /// <summary>
-    /// Whether this character carries the book or supports it. New characters start as
-    /// supporting — a writer promotes the few who turn out to be main.
-    /// </summary>
     public CharacterImportance Importance { get; set; } = CharacterImportance.Supporting;
 
     public string? Age { get; set; }
@@ -30,22 +23,15 @@ public class Character
     public string? Personality { get; set; }
     public string? Backstory { get; set; }
 
-    /// <summary>What the character consciously wants.</summary>
     public string? Want { get; set; }
 
-    /// <summary>What the character actually needs — usually at odds with <see cref="Want"/>.</summary>
     public string? Need { get; set; }
 
     public string? InternalConflict { get; set; }
     public string? ExternalConflict { get; set; }
 
-    /// <summary>
-    /// How the character changes over the course of the book, in a sentence or two.
-    /// <see cref="ArcStages"/> breaks the same change into ordered steps.
-    /// </summary>
     public string? ArcSummary { get; set; }
 
-    /// <summary>Speech patterns, verbal tics, register — anything that makes dialogue sound like them.</summary>
     public string? Voice { get; set; }
 
     public string? Notes { get; set; }
@@ -56,11 +42,11 @@ public class Character
     public List<CharacterRelationship> Relationships { get; set; } = [];
     public List<Tag> Tags { get; set; } = [];
 
-    /// <summary>The character's arc, in order. Kept mainly for main characters.</summary>
     public List<CharacterArcStage> ArcStages { get; set; } = [];
+
+    public List<Beat> Beats { get; set; } = [];
 }
 
-/// <summary>A directed relationship from one character to another.</summary>
 public class CharacterRelationship
 {
     public Guid Id { get; set; } = Guid.NewGuid();
@@ -71,7 +57,6 @@ public class CharacterRelationship
     public Guid RelatedCharacterId { get; set; }
     public Character? RelatedCharacter { get; set; }
 
-    /// <summary>e.g. "sister", "rival", "former mentor".</summary>
     public string RelationshipType { get; set; } = string.Empty;
 
     public string? Description { get; set; }