chore(site): remove AI Studio traces and untrack local scripts

- Clean vite.config.ts: remove GEMINI_API_KEY define, loadEnv, AI Studio HMR comment
- Remove site/README.md (AI Studio boilerplate) from tracking
- Remove site/.env.example (GEMINI_API_KEY template) from tracking
- Untrack site/scripts/ (local build helpers, kept locally)
- Update .gitignore: add site/scripts/, site/.env.example, site/.env.local, site/README.md

Author: junyoung2015

.gitignore

@@ -250,3 +250,9 @@ mcp.json
 
 # Local IDE typing probe
 tests/zodify_ide_check.py
+
+# Site local-only files
+site/scripts/
+site/.env.example
+site/.env.local
+site/README.md

site/vite.config.ts

@@ -1,24 +1,13 @@
 import tailwindcss from '@tailwindcss/vite';
 import react from '@vitejs/plugin-react';
 import path from 'path';
-import {defineConfig, loadEnv} from 'vite';
+import {defineConfig} from 'vite';
 
-export default defineConfig(({mode}) => {
-  const env = loadEnv(mode, '.', '');
-  return {
-    plugins: [react(), tailwindcss()],
-    define: {
-      'process.env.GEMINI_API_KEY': JSON.stringify(env.GEMINI_API_KEY),
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, '.'),
     },
-    resolve: {
-      alias: {
-        '@': path.resolve(__dirname, '.'),
-      },
-    },
-    server: {
-      // HMR is disabled in AI Studio via DISABLE_HMR env var.
-      // Do not modify—file watching is disabled to prevent flickering during agent edits.
-      hmr: process.env.DISABLE_HMR !== 'true',
-    },
-  };
+  },
 });