Implement EMBA Specialization Solver web app

Full React+TypeScript app with LP-based optimization engine,
drag-and-drop specialization ranking (with touch/arrow support),
course selection UI, results dashboard with decision tree, and
two optimization modes (maximize-count, priority-order).

app/vite.config.ts

@@ -0,0 +1,14 @@
+/// <reference types="vitest" />
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    allowedHosts: ['soos'],
+  },
+  test: {
+    globals: true,
+  },
+})