refactor: Streamline project configuration and styling

This commit simplifies the Vite configuration by removing unnecessary options like `base`, `sourcemap`, and custom `rollupOptions`. It also removes the explicit server port definition, allowing Vite to manage it.

Additionally, minor styling adjustments are made to the scrollbar in `index.html` and default values for select inputs in `AccountsPayableView` are updated for clarity. The `engines` property was removed from `package.json` as it's not strictly necessary for typical development workflows.

vite.config.ts

@@ -8,20 +8,8 @@ export default defineConfig({
   define: {
     'process.env': process.env
   },
-  base: '/',
   build: {
     outDir: 'dist',
     emptyOutDir: true,
-    sourcemap: false,
-    rollupOptions: {
-      output: {
-        manualChunks: {
-          vendor: ['react', 'react-dom', 'recharts', 'lucide-react']
-        }
-      }
-    }
-  },
-  server: {
-    port: 3000
   }
 });