Best way to index full Italian Wikipedia for 100% offline RAG in LM Studio?

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Hi everyone, I want to set up a 100% offline RAG system using LM Studio and the entire Italian Wikipedia (text-only, no images). My goal is to index the database once so my local LLMs can query it for up-to-date factual knowledge without internet access. Here are my PC specs: GPU: RTX 4070 super oc 12gb RAM: 32gb ddr5 Storage: NVMe SSD samsung 870 evo 2tb I have two main questions for the community: Data Source: What is currently the best, cleanest, and most upda