GENESIS_ACTIVATION and is_unspendable_genesis (always legacy for Palladium),
script matching helpers and ScriptPubKey.TO_*_OPS, Deserializer._read_be_uint16,
the unused Coin.CHUNK_SIZE and ENCODE_CHECK, the name-index fallback of the
local RPC 'query' command, and stale comments about other coins.
Block processing and the db format are unchanged: a fresh sync gives the same
history as before. STATIC_BLOCK_HEADERS and the dynamic header code in db.py
are left, being generic functionality that would need wider changes.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>