feat: disable zoom and fix iOS viewport issues

- Add user-scalable=no and interactive-widget=overlays-content to viewport meta tag
- Implement iOS viewport height fixes to prevent keyboard-related layout shifts
- Use dynamic viewport height (100dvh) for better mobile support
- Add fixed positioning and overflow controls to prevent viewport changes
- Enable scrolling only within #app container for better UX

src/assets/styles/tailwind.css

@@ -7,6 +7,24 @@
     html {
         font-family: 'Work Sans', ui-sans-serif, system-ui, sans-serif !important;
     }
+    
+    /* Fix iOS viewport height changes when keyboard appears/disappears */
+    html, body {
+        height: 100%;
+        height: 100vh;
+        height: 100dvh; /* Dynamic viewport height for better mobile support */
+        overflow: hidden; /* Disable all scrolling on html and body */
+        position: fixed; /* Force fixed positioning to prevent viewport changes */
+        width: 100%;
+        top: 0;
+        left: 0;
+    }
+    
+    #app {
+        height: 100vh;
+        height: 100dvh;
+        overflow-y: auto;
+    }
 }
 
 @layer components {