fix(wallet-toolbox): explicit txid null/empty check; drop lint from prepublish

Satisfies @typescript-eslint/strict-boolean-expressions on nullable
string in abortAction guard. Lint removed from prepublish in
wallet-toolbox and wallet-toolbox-examples — release workflow should
not fix lint after merge to main.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: sirdeggen

packages/wallet/wallet-toolbox-examples/package.json

@@ -24,7 +24,7 @@
     "test:coverage": "npm run build && jest --coverage",
     "lint": "prettier --write 'src/**/*.ts' --log-level silent",
     "build": "tsc --build",
-    "prepublish": "npm run lint && npm run build && npm run doc",
+    "prepublish": "npm run build && npm run doc",
     "doc": "ts2md"
   },
   "bugs": {

packages/wallet/wallet-toolbox/package.json

@@ -31,7 +31,7 @@
     "lint": "ts-standard --fix src/**/*.ts",
     "lint:ci": "ts-standard src/**/*.ts",
     "build": "tsc --build",
-    "prepublish": "npm run lint && npm run build && npm run doc && npm run sync-versions",
+    "prepublish": "npm run build && npm run doc && npm run sync-versions",
     "doc": "ts2md",
     "sync-versions": "node syncVersions.js"
   },

packages/wallet/wallet-toolbox/src/storage/StorageProvider.ts

@@ -310,7 +310,7 @@ export abstract class StorageProvider extends StorageReaderWriter implements Wal
       // chain-confirmed txs while offline; the audit trail makes it
       // recoverable.
       let serviceUnreachable = false
-      if (tx.txid && tx.status === 'nosend') {
+      if (tx.txid != null && tx.txid !== '' && tx.status === 'nosend') {
         const services = this.getServices()
         let chainStatus: 'mined' | 'known' | 'unknown' | undefined
         try {