initial commit: slides + practica_resueltos + README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

slides/pages/agents/05.md

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+---
+layout: default
+---
+
+# Configuración del Modelo
+
+<div class="mt-4 text-xs">
+
+<v-click>
+
+**Opción 1: String con formato `provider:model`**
+
+```typescript
+const agent = createAgent({
+  model: "mistral:mistral-large-latest",  // Mistral
+  // model: "openai:gpt-4.1",               // OpenAI
+  // model: "anthropic:claude-sonnet-4-6",  // Anthropic
+  tools: [],
+});
+```
+
+</v-click>
+
+<v-click>
+
+**Opción 2: Instancia del modelo con configuración avanzada**
+
+```typescript
+import { ChatMistralAI } from "@langchain/mistralai";
+
+const model = new ChatMistralAI({
+  model: "mistral-large-latest",
+  temperature: 0.1,
+  maxTokens: 1000,
+});
+
+const agent = createAgent({ model, tools: [] });
+```
+
+</v-click>
+
+</div>