refactor(build): migrate from Create React App to Vite

Major build system migration replacing react-scripts with Vite.
Upgrades React to v19, Redux Toolkit to v2, Three.js to 0.184,
and replaces axios with ky. Removes IE11 support, test
infrastructure, and polyfills. Updates TypeScript config to
project references and bumps version to 3.0.0.

src/App.module.css

@@ -7,7 +7,7 @@
 .main {
   width: 100%;
   min-height: 330px;
-  height: auto !important;
+  height: auto;
   border: thin solid #bb3300;
   text-align: left;
   border-radius: 20px;