The tests work

src/cli/autocomplete/offline-engine.ts

@@ -13,6 +13,7 @@ import { createStorageAdapter, State, StorageType } from "@xo-cash/state";
 import { convertMnemonicToSeedBytes } from "@xo-cash/crypto";
 import { binToHex, hash256 } from "@bitauth/libauth";
 import { createHash } from "crypto";
+import { InMemoryBlockchainProvider } from "../../utils/blockchain/in-memory-blockchain-provider.js";
 
 /**
  * Options for creating an offline engine.
@@ -64,7 +65,7 @@ export async function createOfflineEngine(
   const state = new State(storageAdapter);
 
   // Create a minimal blockchain monitor (no electrum initialization)
-  const blockchainMonitor = new BlockchainMonitor(state);
+  const blockchainMonitor = new BlockchainMonitor(state, new InMemoryBlockchainProvider());
 
   // Engine constructor is private; bypass for offline read-only completions.
   type EngineConstructor = new (