Zoo's home rendered no P-Chain panel but still sent the validators, chain list
and height reads behind the Lux panels, because the hooks ran in the page body.
The metrics strip and the chain-health grid are now components the Lux explorer
alone renders, and the reads live inside them. The stats page's chain count,
shown only on Lux, reads the chain list the same way.
NetworkOverview.spec.tsx asserts a brand host sends no P-Chain request and the
Lux host sends all three; putting the reads back in the page body fails it.
Claude-Session: https://claude.ai/code/session_011Ge9UnfkEK37Lapx5nfPQK
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