initial commit: slides + practica_resueltos + README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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2026-05-29 11:50:55 +02:00
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# API Key en el Constructor
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## 🔧 Pasar la key directamente
```typescript
import { ChatOpenAI } from "@langchain/openai";
const model = new ChatOpenAI({
apiKey: "sk-proj-xxxxxxxxxxxxx", // Directamente aquí
model: "gpt-4.1-mini"
});
```
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## ⚠️ Cuándo usarlo
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<div>
<p class="font-bold mb-2 text-sm">✅ Variables de entorno</p>
<p>Para producción, CI/CD y equipos</p>
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<div>
<p class="font-bold mb-2 text-sm">⚡ Constructor</p>
<p>Solo testing rápido y prototipos</p>
</div>
</div>
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🔒 Recuerda: Añade <code>.env</code> a <code>.gitignore</code>
</div>
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</div>