fix: remove dynamic height logic that was breaking footer visibility

The dynamic height adjustment was setting a fixed height on .cv-paper,
but the footer is a sibling element OUTSIDE .cv-paper in the DOM.
This caused the footer to be positioned incorrectly and hidden.

Removed:
- dataset.originalHeight storage
- height calculation and setting
- All dynamic height adjustment logic

The CSS transform: scale() will handle the visual zoom without
affecting the natural document flow, allowing the footer to
appear properly after the content.

Result: Footer should now be visible at all zoom levels

static/js/main.js

@@ -334,22 +334,9 @@
             // Store current scroll position
             const oldScrollTop = window.pageYOffset || document.documentElement.scrollTop;
 
-            // Get the natural height before any transform
-            if (!cvPaper.dataset.originalHeight) {
-                // Store original height on first zoom
-                cvPaper.style.transform = 'scale(1)';
-                cvPaper.dataset.originalHeight = cvPaper.scrollHeight;
-            }
-
-            const originalHeight = parseInt(cvPaper.dataset.originalHeight);
-
             // Apply the new scale
             cvPaper.style.transform = `scale(${newScale})`;
 
-            // Adjust the container height to match the scaled content
-            // This prevents empty space when zooming out and content overflow when zooming in
-            cvPaper.style.height = `${originalHeight * newScale}px`;
-
             // Calculate proportional scroll position to maintain visual position
             // If zooming from 100% to 50%, content at pixel 1000 moves to pixel 500
             // So we need to scroll to pixel 500 to see the same content