feat: display series information on book and game cards

- Add series name and order display to book cards (books-list.component.ts:598-602)
- Add series name and order display to game cards (games-list.component.ts:560-564)
- Series shows as "📚 Series Name #Order" format
- Add brown-themed styling (#8b6f47) for series info
- Pre-populate series fields when editing books/games
- Series fields added to startEdit() methods for both books and games

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

apps/frontend/src/app/components/books/books-list.component.ts

@@ -595,6 +595,11 @@ import { Book, BookStatus, CreateBookDto, UpdateBookDto, Comment, SuggestionEnti
               <div class="book-info">
                 <h3>{{ book.title }}</h3>
                 <p class="author">by {{ book.author }}</p>
+                @if (book.series) {
+                  <p class="series">
+                    📚 {{ book.series }}@if (book.seriesOrder) { #{{ book.seriesOrder }}}
+                  </p>
+                }
 
                 <span class="status status-{{ book.status }}">
                   {{ getStatusLabel(book.status) }}
@@ -1011,6 +1016,14 @@ import { Book, BookStatus, CreateBookDto, UpdateBookDto, Comment, SuggestionEnti
       margin: 0.5rem 0;
     }
 
+    .series {
+      color: #8b6f47;
+      font-size: 0.85rem;
+      margin: 0.5rem 0;
+      font-weight: 500;
+      font-style: italic;
+    }
+
     .status {
       display: inline-block;
       padding: 0.25rem 0.5rem;
@@ -1747,7 +1760,9 @@ export class BooksListComponent implements OnInit {
       notes: book.notes,
       coverImage: book.coverImage,
       tags: [...(book.tags || [])],
-      links: [...(book.links || [])]
+      links: [...(book.links || [])],
+      series: book.series,
+      seriesOrder: book.seriesOrder
     };
     this.editBookImagePreview.set(book.coverImage || null);
     this.showAddForm.set(false);