* fix(chains): drop node URLs that embed Nova's Infura keys
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/
* fix(chains): strip every keyed provider URL, and make the gate fail closed
The first pass matched only `infura.io/.../v3/<lowercase hex>`, so it missed
`https://...infura.io/v3/<key>`, upper-case keys and hosts, and Nova's
OnFinality `?apikey=` URLs (Moonriver, and the Hades testnet in v20/v21
preConfigured). preConfigured was copied from Nova without the filter, and the
integrity check passed if grep itself failed.
- one predicate, is_keyed(), in sync_from_nova.py: Infura /v3/ ids and
apikey/api_key/key/token query values, case-insensitive; {PLACEHOLDER}
values are allowed
- preConfigured details are filtered after the copy; a chain left with no
node loses its details file and its index entry (Hades, v20/v21 only)
- rewritten files keep their own indent, so the diff is the data change only
- check 5 imports is_keyed() and checks every string in every JSON file
under chains/; an unreadable file or an empty tree is an error
- check 3 reports a grep error instead of passing on it
- 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
SatoshiQaziMuhammed