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Philosophers — hub

An intermediate hub over 21 knowledge bases of philosophers and practitioners.
Each base is a single author's corpus: concepts, principles with verbatim
quote anchors, argument chains, a map of disputes. This hub is a routing
layer: author cards, a topic × position matrix, and a contradiction index;
the corpora themselves are attached via federation.

How to use it (for agents): do not fan out searches across all bases. First
find the topic in the topic matrix or the author in the
list below — the card names the kb_id and grounding slugs; then run a
targeted federated_search(kb_id=...). The detailed procedure is in
en/_instructions.

Cross-corpus layers