Build ChromaDB + Tavily RAG agent with Ollama embeddings, local/web tools, create_agent routing, and CLI ingest flow.: add documents/chroma_intro.txt

documents/chroma_intro.txt

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+ChromaDB is a local vector store that can persist embeddings between runs.
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+With LangChain you can wrap Chroma as a vector store and then expose it as a retriever for semantic search.
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+This is useful for local course notes and internal documents that should be searched without going to the web.