feat: display app version in sidebar with GitHub release check

frontend/vite.config.ts

@@ -2,8 +2,12 @@ import path from 'path'
 import { defineConfig } from 'vitest/config'
 import react from '@vitejs/plugin-react'
 import tailwindcss from '@tailwindcss/vite'
+import pkg from './package.json'
 
 export default defineConfig({
+  define: {
+    __APP_VERSION__: JSON.stringify(pkg.version),
+  },
   plugins: [react(), tailwindcss()],
   resolve: {
     alias: {