fix(nonce-lanes): honor parallel/nonceKey in signTransaction

signTransaction routed through _resolveQuote, which never called
_resolveNonce, so a requested nonce lane was silently dropped and the
operation was signed at the default key-0 nonce. Route signTransaction
through _prepareForSend (the same helper sendTransaction/transfer use):
it resolves the lane, bypasses the key-0 quote cache for lane sends, and
builds at the lane nonce. The default path is unchanged (same cache reuse
+ staleness check, same async cost). Remove the now-dead _resolveQuote.

Author: AlonzoRicardo

src/wallet-account-evm-erc-4337.js

@@ -161,16 +161,16 @@ export default class WalletAccountEvmErc4337 extends WalletAccountReadOnlyEvmErc
       this._validateConfig(mergedConfig)
     }
 
-    const cached = await this._resolveQuote(tx, config)
+    const prepared = await this._prepareForSend(tx, [tx], mergedConfig)
 
-    const fee = cached.fee
+    const fee = prepared.fee
 
     const { isSponsored, transactionMaxFee } = mergedConfig
     if (!isSponsored && transactionMaxFee !== undefined && fee > transactionMaxFee) {
       throw new Error('Exceeded maximum fee cost for transaction operation.')
     }
 
-    const { userOp } = await this._signUserOperation([tx], { config: mergedConfig, cachedBuild: cached })
+    const { userOp } = await this._signUserOperation([tx], { config: mergedConfig, cachedBuild: prepared })
 
     this._quoteCache.clear()
 
@@ -366,23 +366,6 @@ export default class WalletAccountEvmErc4337 extends WalletAccountReadOnlyEvmErc
     this._ownerAccount.dispose()
   }
 
-  /** @private */
-  async _resolveQuote (tx, config) {
-    let cached = this._consumeCachedQuote(tx)
-
-    if (cached?.userOp) {
-      const onChainNonce = await fetchAccountNonce(this._provider, cached.smartAccount.entrypointAddress, cached.smartAccount.accountAddress)
-      if (cached.userOp.nonce !== onChainNonce) cached = undefined
-    }
-
-    if (!cached) {
-      await this.quoteSendTransaction(tx, config)
-      cached = this._consumeCachedQuote(tx)
-    }
-
-    return cached
-  }
-
   /** @private */
   async _prepareForSend (tx, txs, config) {
     const nonce = await this._resolveNonce(config)

types/src/wallet-account-evm-erc-4337.d.ts

@@ -127,8 +127,6 @@ export default class WalletAccountEvmErc4337 extends WalletAccountReadOnlyEvmErc
      */
     dispose(): void;
     /** @private */
-    private _resolveQuote;
-    /** @private */
     private _prepareForSend;
     /** @private */
     private _buildAtNonce;