Add landing pages library with comprehensive components and demos

🤖 Generated with [Claude Code](https://claude.ai/code)

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

projects/ui-code-display/src/lib/components/code-block/code-block.component.ts

@@ -31,11 +31,11 @@ export type CodeBlockVariant = 'default' | 'minimal' | 'bordered';
         @if (showLineNumbers && lineCount() > 1) {
           <div class="code-block__line-numbers" [attr.aria-hidden]="true">
             @for (lineNum of lineNumbers(); track lineNum) {
-              <span 
+              <div 
                 class="code-block__line-number"
                 [class.code-block__line-number--highlighted]="isLineHighlighted(lineNum)">
                 {{ lineNum }}
-              </span>
+              </div>
             }
           </div>
         }
@@ -95,7 +95,14 @@ export class CodeBlockComponent implements OnInit, OnChanges {
   }
 
   readonly lineCount = computed(() => {
-    return this.code ? this.code.split('\n').length : 0;
+    if (!this.code) return 0;
+    
+    const lines = this.code.split('\n');
+    // Remove the last empty line if the code ends with a newline
+    if (lines.length > 1 && lines[lines.length - 1] === '') {
+      return lines.length - 1;
+    }
+    return lines.length;
   });
 
   readonly lineNumbers = computed(() => {