RAG Pipeline

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    { "id":"chunk","type":"rect","label":"Chunk + clean","x":240,"y":60,"fill":"#fef3c7","stroke":"#a16207" },
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    { "id":"q","type":"ellipse","label":"User query","x":40,"y":240,"fill":"#fef3c7","stroke":"#a16207" },
    { "id":"qe","type":"rect","label":"Query embed","x":240,"y":240,"fill":"#dbeafe","stroke":"#2563eb" },
    { "id":"ret","type":"rect","label":"Retrieve top-k","x":440,"y":240,"fill":"#ede9fe","stroke":"#6d28d9" },
    { "id":"llm","type":"rect","label":"LLM","x":640,"y":240,"fill":"#fce7f3","stroke":"#be185d" },
    { "id":"ans","type":"ellipse","label":"Answer","x":840,"y":240,"fill":"#dcfce7","stroke":"#15803d" }
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    { "id":"e5","source":"qe","target":"ret" },
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    { "id":"e8","source":"llm","target":"ans" }
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}