refactor: complete web project consolidation and stabilize identity flow

- Finalized move from NexusReader.Web.New to NexusReader.Web
- Implemented robust ServerIdentityService with UserManager and SignInManager
- Updated UI components to handle authentication state synchronization via force reload
- Refined BookIngestionModal styling following Nexus Neon design system
- Resolved namespace conflicts and updated CI/CD/VS Code configurations
- Fixes #33

src/NexusReader.Web.Client/Services/WasmEpubService.cs

@@ -2,7 +2,6 @@ using System.Net.Http.Json;
 using FluentResults;
 using NexusReader.Application.Abstractions.Services;
 using NexusReader.Application.Queries.Reader;
-using VersOne.Epub;
 
 namespace NexusReader.Web.Client.Services;
 
@@ -19,19 +18,24 @@ public class WasmEpubReader : IEpubReader
     {
         try
         {
-            var response = await _httpClient.GetAsync($"api/epub/content?index={chapterIndex}&userId={userId}");
+            var response = await _httpClient.GetAsync($"/api/epub/{chapterIndex}");
             if (response.IsSuccessStatusCode)
             {
-                var result = await response.Content.ReadFromJsonAsync<ReaderPageViewModel>();
-                return result != null ? Result.Ok(result) : Result.Fail("Failed to deserialize reader page.");
+                var viewModel = await response.Content.ReadFromJsonAsync<ReaderPageViewModel>();
+                return viewModel != null ? Result.Ok(viewModel) : Result.Fail("Failed to deserialize response.");
             }
-            return Result.Fail("Failed to fetch EPUB content from server.");
+            
+            // Try to read the error message from the body
+            var errorBody = await response.Content.ReadAsStringAsync();
+            return Result.Fail($"Server error ({response.StatusCode}): {errorBody}");
         }
         catch (Exception ex)
         {
-            return Result.Fail(new Error("Network error while fetching EPUB content.").CausedBy(ex));
+            // Fallback for network errors or parsing exceptions
+            return Result.Fail(new Error($"Network or parsing error: {ex.Message}").CausedBy(ex));
         }
     }
+    // Metadata extraction moved to WasmEpubMetadataExtractor
 }
 
 public class WasmEpubMetadataExtractor : IEpubMetadataExtractor
@@ -40,7 +44,7 @@ public class WasmEpubMetadataExtractor : IEpubMetadataExtractor
     {
         try
         {
-            using var bookRef = await EpubReader.OpenBookAsync(epubStream);
+            using var bookRef = await VersOne.Epub.EpubReader.OpenBookAsync(epubStream);
             var title = bookRef.Title ?? "Unknown Title";
             var author = bookRef.Author ?? "Unknown Author";
             byte[]? cover = await bookRef.ReadCoverAsync();