Release v0.3.0 · morph-l2/morph-reth

Summary

New morph_ RPC namespace (#106) — adds morph_getTransactionHashesByReference,
backed by a new morph-reference-index crate (dedicated MDBX store) and an ExEx
that indexes Morph-tx references from the Jade activation block onward. Ships
with startup backfill + reorg-aware reconcile, gated readiness, and
lag-threshold guards. Compatible with geth-style hex-quantity offset /
limit on the wire.
Build-profile gradient and production-deploy retune (#104) — adds explicit
dev / release / profiling / maxperf / bench / hivetests profiles
to the workspace. Production deploys (Dockerfile, EC2 build, tag-push release
CI) now default to the profiling profile, which captured ~80% of maxperf's
hot-path gains in our benchmarks while avoiding maxperf's ERC20 long-tail
regression. x86_64 release artifacts now target the x86-64-v3 baseline
(Haswell+ / Excavator+) plus pclmulqdq.

Removed engine_appendBatchSignature and BatchSignature (#105) — the
consensus layer (tendermint / morphnode) stopped calling this method after
batch generation moved out of the consensus path into the tx-submitter
(morph-l2/go-ethereum#319, morph-l2/tendermint#35,
morph-l2/morph#939). Operators must run a tendermint / morphnode build
that no longer issues the call.

refactor(evm): removed unreachable apply_curie_hard_fork dead code; every
Morph chain config sets curieBlock = 0 and the L1GasPriceOracle Curie slots
are initialized post-launch via a regular transaction (mainnet block 863) (#101).
fix(clippy): silenced unnecessary_sort_by (#100).

No state-DB schema changes for the main reth datadir.
New optional reference-index DB at <datadir>/morph/reference_index/ —
created and backfilled on first start; takes a few minutes for the
post-Jade range to become queryable. The RPC returns
-32000 "reference index initializing" until ready.

Full Changelog: v0.2.2...v0.3.0

chore: bump version to 0.3.0 (#107)
chore(ci): bump docker/metadata-action from 5 to 6 (#99)
refactor(evm): remove unused apply_curie_hard_fork dead code (#101)
feat(rpc): implement morph_getTransactionHashesByReference (#106)
refactor(engine-api): remove engine_appendBatchSignature and BatchSignature (#105)
chore: add workspace build profile gradient and wire prod deploys to profiling (#104)
fix(evm): use sort_by_key to satisfy clippy unnecessary_sort_by lint (#100)