Graphviz DOT diagram of the arborist pipeline as the answer to the Google
L5 system-design prompt 'design a RAG pipeline for 10M docs with zero
hallucination'. Maps our components onto the canonical 10-box RAG design
and shows the three extensions that buy zero-hallucination + near-zero
cost: deterministic verifier (not a model confidence score) -> honest
UNGROUNDED; Merkle-bound cache that skips the GPU; measured energy COGS
(~$0.07-0.16/1k answers, non-reasoning). Includes the mapping table +
the 3.47M->10M scaling math (+77GB, sourcing/storage not redesign).
Enables sphinx.ext.graphviz (SVG output) + graphviz apt package on the
RTD build; adds the page to the Summary-pages toctree. Builds clean
(page renders, DOT validates via dot -Tsvg).