fix: Add HDWalletLive to CryptoLive, remove artificial native gate

[enitrat]

Summary

• HDWallet is pure JS (@scure/bip32) but was incorrectly gated behind the /native entry point
• Users were forced to use CryptoLiveNative from voltaire-effect/native for HD wallet derivation despite zero native/FFI/WASM dependency
• The comment "HDWallet uses native FFI modules" in crypto/index.ts was simply wrong

Changes

• Export HDWallet from voltaire-ts crypto index and wasm index (was commented out with misleading note)
• Change HDWalletLive import from @tevm/voltaire/native to @tevm/voltaire/HDWallet
• Add HDWalletLive to CryptoLive layer — users get HD wallet with Effect.provide(CryptoLive)
• Export HDWalletLive from voltaire-effect/crypto/HDWallet module
• Remove CryptoLiveNative (now redundant — was just CryptoLive + HDWalletLive)
• Clean up misleading "native FFI" comments across native/wasm entry points

Justification

Every HDWallet function wraps @scure/bip32 — a pure JavaScript, audited BIP-32 implementation by Paul Miller. Evidence:

• fromSeed.js:1 — import { HDKey } from "@scure/bip32"
• deriveChild.js — calls key.deriveChild(index) on @scure/bip32 objects
• No Zig FFI, no WASM, no native bindings anywhere in the HDWallet module

The /native entry point exists for genuinely native code (Keccak256 via Zig FFI). HDWallet was lumped in there by mistake, forcing users into an unnecessary import path.

Before / After

// BEFORE: Required /native entry for no reason
import { CryptoLiveNative } from 'voltaire-effect/native'
program.pipe(Effect.provide(CryptoLiveNative))

// AFTER: Just works
import { CryptoLive } from 'voltaire-effect/crypto'
program.pipe(Effect.provide(CryptoLive))

Test plan

• All 2710 voltaire-effect tests pass (138 test files)
• Zero new type errors (tsc --noEmit)
• HDWallet functionality unchanged — same @scure/bip32 backing

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[roninjin10]

Hmm I'm the one who put it in native because it was causing me issues. I'll have to manually test this in myt other project before I can merge this