fix: Configure Vite for nginx reverse proxy

- Add --host flag to bind to all interfaces
- Add __VITE_ADDITIONAL_SERVER_ALLOWED_HOSTS env var for external domain
- Configure allowedHosts in vite.config.ts
- Remove duplicate vite.config.js (was overriding .ts config)
- Enable IPv4 binding for nginx proxy compatibility

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

admin-ui/package.json

@@ -5,7 +5,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "dev": "vite",
+    "dev": "__VITE_ADDITIONAL_SERVER_ALLOWED_HOSTS=dss.overbits.luz.uy vite --host",
     "build": "tsc && vite build",
     "preview": "vite preview",
     "test": "vitest",

admin-ui/vite.config.js

@@ -1,60 +0,0 @@
-import { defineConfig } from 'vite'
-
-export default defineConfig({
-  plugins: [],
-
-  server: {
-    port: 3456,
-    open: false,
-    strictPort: true,
-    cors: true,
-    // Proxy configuration for backend API integration
-    proxy: {
-      '/api': {
-        target: 'http://localhost:8002',
-        changeOrigin: true,
-        secure: false, // Allow proxying to HTTP backend from HTTPS frontend
-      }
-    },
-    // Hot Module Replacement configuration
-    hmr: {
-      protocol: 'http',
-      host: 'localhost',
-      port: 3456
-    }
-  },
-
-  build: {
-    outDir: 'dist',
-    sourcemap: false,
-    minify: 'terser',
-    // Treat paths with /admin-ui/ prefix as external (from index.html inline scripts)
-    rollupOptions: {
-      external: (id) => {
-        // External paths starting with /admin-ui/
-        if (id.startsWith('/admin-ui/')) {
-          return true
-        }
-        return false
-      },
-      output: {
-        manualChunks: (id) => {
-          if (id.includes('/js/core/')) return 'core'
-          if (id.includes('/js/services/')) return 'services'
-          if (id.includes('/js/components/')) return 'components'
-        }
-      }
-    }
-  },
-
-  preview: {
-    port: 3456,
-    open: false
-  },
-
-  resolve: {
-    alias: {
-      '@': '/js'
-    }
-  }
-})

admin-ui/vite.config.ts

@@ -56,7 +56,9 @@ export default defineConfig(({ mode }) => ({
     }
   },
   server: {
+    host: '0.0.0.0',  // Bind to all interfaces for nginx proxy compatibility
     port: 3456,
+    allowedHosts: ['dss.overbits.luz.uy', 'localhost', '.localhost'],  // Allow external domain and localhost
     proxy: {
       '/api': {
         target: 'http://localhost:8002',