feat: implement automated versioning.

vite.config.ts

@@ -1,8 +1,19 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+import { readFileSync } from 'node:fs'
+import { resolve } from 'node:path'
+import { fileURLToPath, URL } from 'node:url'
+
+// Read version from package.json
+const __dirname = fileURLToPath(new URL('.', import.meta.url))
+const packageJson = JSON.parse(readFileSync(resolve(__dirname, 'package.json'), 'utf-8'))
+const version = packageJson.version
 
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
   base: '/kgstudio/',
+  define: {
+    __APP_VERSION__: JSON.stringify(version),
+  },
 })