auto-detect existing wallets, show selectable list on startup

apps/desktop/src/bun/lib/monero/wallet.ts

@@ -1,6 +1,7 @@
 import { MoneroWalletRpc, MoneroRpcConnection, connectToWalletRpc, connectToDaemonRpc } from 'monero-ts'
 import { getBinaryPath, getWalletDir } from './binary'
-import { existsSync } from 'fs'
+import { existsSync, readdirSync } from 'fs'
+import { join } from 'path'
 
 const DEFAULT_DAEMON = 'xmr-node.cakewallet.com:18081'
 
@@ -18,6 +19,17 @@ export class MoneroWalletManager {
 		this.rpcPassword = crypto.randomUUID()
 	}
 
+	listWallets(): string[] {
+		const dir = getWalletDir()
+		if (!existsSync(dir)) return []
+		const files = readdirSync(dir)
+		const wallets = files
+			.filter(f => f.endsWith('.keys'))
+			.map(f => f.replace(/\.keys$/, ''))
+		console.log(`[monero] wallets on disk: ${wallets.join(', ') || 'none'}`)
+		return wallets
+	}
+
 	private get rpcUrl() {
 		return `http://127.0.0.1:${this.rpcPort}`
 	}