fix: apply zoom to cv-container and footer to properly reduce document space

Changed zoom target from .cv-paper to .cv-container and .cv-footer to fix issue
where 50% zoom still reserved 100% document space creating empty areas. Both
elements now scale together, properly reducing space at low zoom levels while
keeping main action bar unaffected.

- Modified applyZoom() to target .cv-container and .cv-footer
- Added transform-origin, transition, and will-change to both CSS selectors
- Maintains proportional scroll compensation for smooth visual experience

static/js/main.js

@@ -319,11 +319,12 @@
      * @param {boolean} saveToStorage - Whether to persist to localStorage
      */
     function applyZoom(zoomValue, saveToStorage = true) {
-        const cvPaper = document.querySelector('.cv-paper');
-        if (!cvPaper) return;
+        const cvContainer = document.querySelector('.cv-container');
+        const cvFooter = document.querySelector('.cv-footer');
+        if (!cvContainer) return;
 
         // Get current scale to calculate ratio
-        const currentTransform = cvPaper.style.transform;
+        const currentTransform = cvContainer.style.transform;
         const currentScaleMatch = currentTransform.match(/scale\(([\d.]+)\)/);
         const oldScale = currentScaleMatch ? parseFloat(currentScaleMatch[1]) : 1.0;
 
@@ -334,8 +335,11 @@
             // Store current scroll position
             const oldScrollTop = window.pageYOffset || document.documentElement.scrollTop;
 
-            // Apply the new scale
-            cvPaper.style.transform = `scale(${newScale})`;
+            // Apply the new scale to both container and footer
+            cvContainer.style.transform = `scale(${newScale})`;
+            if (cvFooter) {
+                cvFooter.style.transform = `scale(${newScale})`;
+            }
 
             // Calculate proportional scroll position to maintain visual position
             // If zooming from 100% to 50%, content at pixel 1000 moves to pixel 500