Simplify character dossier fields, add ShowPronouns setting

Collapse Want/Need into Motivation and Internal/External Conflict into
Conflict, drop Arc summary field, and move tags below open questions on
the character page. Gate Pronouns display behind new UiSettings:ShowPronouns
config (default off).

src/Novelly.Api/Program.cs

@@ -105,6 +105,7 @@ if (app.Environment.IsDevelopment())
 app.MapDefaultEndpoints();
 
 app.MapGet("/api/health", () => Results.Ok(new { status = "ok" })).WithTags("Health").AllowAnonymous();
+app.MapUiSettingsEndpoints();
 
 app.MapUserEndpoints();
 app.MapNovelMemberEndpoints();