Update Open Calc Studio screenshot

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: DutchSailor

open-calc-studio/index.html

@@ -191,7 +191,7 @@ <h1 data-i18n="header.title">Open Calc <span class="accent">Studio</span></h1>
     <div class="media-slider">
       <div class="slider-container">
         <div class="slider-track">
-          <div class="slider-slide"><img src="/shared/assets/screenshots/open-calc-studio.png" alt="Open Calc Studio - Begrotingsoverzicht"></div>
+          <div class="slider-slide"><img src="/shared/assets/screenshots/open-calc-studio-new.png" alt="Open Calc Studio - Begrotingsoverzicht"></div>
         </div>
       </div>
     </div>