fix: adjust project card size to match featured publications

- Change columns from 3 to 2 for larger card display
- Remove unnecessary view options (fill_image, show_date, etc.)
- Match Featured Publications layout style

Author: FlyTia

content/projects/_index.md

@@ -18,9 +18,5 @@ sections:
           - projects
     design:
       view: article-grid
-      fill_image: false
-      columns: 3
-      show_date: false
-      show_read_time: false
-      show_read_more: false
+      columns: 2
 ---