feat: Preparar app para deploy na Vercel (mantendo Netlify)

VERCEL_QUICK_START.md

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+# ⚡ VERCEL - INÍCIO RÁPIDO
+
+## 🎯 DEPLOY EM 10 MINUTOS
+
+### 1. Criar projeto na Vercel
+- Acesse: https://vercel.com/new
+- Importe: `Reifonas/RDOC`
+- Framework: **Vite**
+
+### 2. Adicionar variáveis de ambiente
+
+```bash
+VITE_SUPABASE_URL=https://xzudfhifaancyxxfdejx.supabase.co
+VITE_SUPABASE_ANON_KEY=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6Inh6dWRmaGlmYWFuY3l4eGZkZWp4Iiwicm9sZSI6ImFub24iLCJpYXQiOjE3NzEzNjE0MTAsImV4cCI6MjA4NjkzNzQxMH0.c5CHWhfXcMrm27LfxEt6OZtttXXvVJOeWu-IbnNLfWY
+```
+
+### 3. Deploy
+- Clique em **"Deploy"**
+- Aguarde 2-3 minutos
+- Anote a URL gerada
+
+### 4. Configurar Supabase
+
+Adicione no Supabase (Auth → URL Configuration):
+
+```
+https://SUA-URL.vercel.app/auth/callback
+https://rdo.tracksteel.com.br/auth/callback
+```
+
+### 5. Configurar Google Cloud
+
+Adicione no Google Cloud Console:
+
+```
+https://xzudfhifaancyxxfdejx.supabase.co/auth/v1/callback
+https://SUA-URL.vercel.app/auth/callback
+https://rdo.tracksteel.com.br/auth/callback
+```
+
+### 6. Testar
+- Abra a URL da Vercel
+- Faça login com Google
+- Deve funcionar! ✅
+
+---
+
+## 🔗 LINKS ÚTEIS
+
+- **Dashboard Vercel**: https://vercel.com/dashboard
+- **Supabase Auth Config**: https://supabase.com/dashboard/project/xzudfhifaancyxxfdejx/auth/url-configuration
+- **Google Cloud Console**: https://console.cloud.google.com/apis/credentials
+
+---
+
+## 📝 NOTAS
+
+- A Vercel tem melhor suporte para Vite que o Netlify
+- Deploy automático via GitHub está configurado
+- Domínio customizado pode ser configurado depois
+
+---
+
+**Guia completo em: DEPLOY_VERCEL.md**
+