chore(deps)!: bump seismic-crypto and fold the tx-io pair into one keypair (#65)

Part of SEI-172

seismic-crypto renamed its well-known network key getters for what they
are (SeismicSystems/enclave#262): these are the keys every network
without a root key actually runs, not test fixtures. The revm and alloy
pins move to the revs that take the same rename
(SeismicSystems/seismic-revm#239, SeismicSystems/seismic-alloy#113).

PurposeKeys holds the tx-io pair as one secp256k1::Keypair, so a
mismatched pair is unrepresentable everywhere the struct travels; call
sites read .secret_key() / .public_key(), and the redacting Debug prints
tx_io.public_key(). PurposeKeys::well_known() names the bundle a network
with no root key runs, in the crate that owns the type — one definition
for the node's built-in key source and for every test that needs a
bundle a node would accept. Its dependency costs nothing: seismic-crypto
is already in this crate's graph through both seismic-revm and
seismic-alloy-consensus.

The alloy-tx-macros tag patch goes away: seismic-alloy exact-pins it at
=1.1.0 in the crate that introduces the edge, and version requirements
propagate where patches do not. Cargo.lock is committed so CI stops
resolving fresh and picking up releases inside caret ranges that
conflict with the pinned alloy-core fork.

Author: samlaf

.gitignore

@@ -1,5 +1,4 @@
 /target
-/Cargo.lock
 .vscode
 .idea
 .env

CLAUDE.md

@@ -10,7 +10,7 @@ Standard EVM transactions have publicly visible calldata. Seismic wraps the allo
 
 - **`SeismicEvm`** — wrapper around `seismic-revm::SeismicEvm` with optional inspector/tracing support and Seismic-specific transaction types (`SeismicTransaction` with `RngMode`)
 - **`SeismicEvmFactory`** — creates EVMs pre-loaded with purpose keys (RNG keypair from enclave) at boot time
-- **`SeismicBlockExecutor`** — wraps `EthBlockExecutor`, decrypts tx inputs via `plaintext_copy()` using `tx_io_sk` before delegating to inner executor
+- **`SeismicBlockExecutor`** — wraps `EthBlockExecutor`, decrypts tx inputs via `plaintext_copy()` using the tx-io secret key before delegating to inner executor
 - **`SeismicHardfork`** — defines "Mercury" hardfork (active at block 0); all Ethereum forks before Prague are assumed active
 
 ## Build
@@ -105,7 +105,7 @@ crates/
 ## Key Seismic Files
 
 - **`crates/seismic-evm/src/lib.rs`** — `SeismicEvm` (wraps revm), `SeismicEvmFactory` (stores `&'static GetPurposeKeysResponse`)
-- **`crates/seismic-evm/src/block/mod.rs`** — `SeismicBlockExecutor` — the core Seismic logic: calls `plaintext_copy(&purpose_keys.tx_io_sk, signer)` to decrypt tx input before execution
+- **`crates/seismic-evm/src/block/mod.rs`** — `SeismicBlockExecutor` — the core Seismic logic: calls `plaintext_copy(&purpose_keys.tx_io.secret_key(), signer)` to decrypt tx input before execution
 - **`crates/seismic-evm/src/hardfork.rs`** — `SeismicHardfork::Mercury` at block 0; all Ethereum forks < Prague active
 - **`crates/evm/src/eth/protocol_params.rs`** — parses `ProtocolParamEvent` logs from the protocol params contract (`0x...506172616D73`), EIP-7685 request type `0xFF`
 - **`crates/evm/src/tx.rs`** — Seismic-specific `IntoTxEnv` and `FromRecoveredTx` impls for `SeismicTransaction` and `SeismicTxEnvelope` (all Ethereum tx types + Seismic type `0x74`)