Add soft delete + trash, keyboard-first web overhaul, move chapter tags to bottom

Adds SoftDelete/Trash across characters, chapters, locations, beats with a
purge schedule and Trash page. Reworks the web client for keyboard-driven
navigation (focus helpers, help overlay, keyboard.md doc). Moves the
ChapterPage tag editor to the bottom of the page to match CharacterDetailPage.

src/Novelly.ServiceDefaults/Extensions.cs

@@ -21,17 +21,12 @@ public static class Extensions
     public static TBuilder AddServiceDefaults<TBuilder>(this TBuilder builder) where TBuilder : IHostApplicationBuilder
     {
         builder.ConfigureOpenTelemetry();
-
         builder.AddDefaultHealthChecks();
-
         builder.Services.AddServiceDiscovery();
 
         builder.Services.ConfigureHttpClientDefaults(http =>
         {
-            // Turn on resilience by default
             http.AddStandardResilienceHandler();
-
-            // Turn on service discovery by default
             http.AddServiceDiscovery();
         });