initial commit: slides + practica_resueltos + README

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

slides/pages/rag/07.md

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+---
+layout: default
+---
+
+# Más proveedores de Embeddings
+
+<v-clicks>
+
+### Mistral AI
+```typescript
+import { MistralAIEmbeddings } from "@langchain/mistralai";
+
+const embeddings = new MistralAIEmbeddings({
+  model: "mistral-embed",
+});
+```
+
+### Cohere
+```typescript
+import { CohereEmbeddings } from "@langchain/cohere";
+
+const embeddings = new CohereEmbeddings({
+  model: "embed-multilingual-v3.0",
+});
+```
+
+### Ollama (local)
+```typescript
+import { OllamaEmbeddings } from "@langchain/ollama";
+
+const embeddings = new OllamaEmbeddings({
+  model: "llama3.2", // o cualquier modelo compatible
+});
+```
+
+</v-clicks>