Nova's configs carry Nova's own Infura project keys inside node URLs, and
every sync copied them into ours: Ethereum had four keyed Infura nodes and
Base one, across 43 published files. Our Android build already fills
`{INFURA_API_KEY}` from our own secret; the keyed URLs used another
organisation's quota and would break for every user when Nova rotates them.
- sync_from_nova.py strips nodes whose URL embeds an Infura key, and drops a
chain left with no node (only Ethereum - Goerli, a retired testnet, in the
dev files); merge-chains.py applies the same filter
- the published chain files are rewritten with that filter; nothing else in
them changes (each file round-trips byte for byte through json.dump)
- check_pezkuwi_integrity.py refuses a keyed Infura URL under chains/
- Add blocked-chains.json with DNS-failing endpoints (AlephZero, InvArch, Quartz, Passet Hub Testnet)
- Update merge-chains.py to filter PAUSED chains, testnets (except Pezkuwi), and broken RPCs
- Reduce chain count from 102 to 86 (4 Pezkuwi + 82 working Nova chains)
- This fixes staking page not loading due to DNS resolution failures
Satoshi Qazi Muhammed