feat: complete M3 Web UI Enhancement milestone with include/exclude cards, fuzzy matching, mobile responsive design, and performance optimization

- Include/exclude cards feature complete with 300+ card knowledge base and intelligent fuzzy matching
- Enhanced visual validation with warning icons and performance benchmarks (100% pass rate)
- Mobile responsive design with bottom-floating controls, two-column layout, and horizontal scroll prevention
- Dark theme confirmation modal for fuzzy matches with card preview and alternatives
- Dual architecture support for web UI staging system and CLI direct build paths
- All M3 checklist items completed: fuzzy match modal, enhanced algorithm, summary panel, mobile responsive, Playwright tests

code/web/templates/build/_step5.html

@@ -313,6 +313,9 @@
   <!-- controls now above -->
 
       {% if status and status.startswith('Build complete') and summary %}
+        <!-- Include/Exclude Summary Panel (M3: Include/Exclude Summary Panel) -->
+        {% include "partials/include_exclude_summary.html" %}
+        
         {% include "partials/deck_summary.html" %}
       {% endif %}
     </div>