fix: replace ts-node with tsx for worker scripts

TypeScript 7's CommonJS export no longer populates ts.sys, which
ts-node's config loader depends on, breaking `npm run worker` with
a TypeError. tsx (esbuild-based) doesn't rely on that API and
natively resolves tsconfig.json path aliases, so tsconfig-paths is
also no longer needed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

tsconfig.json

@@ -28,12 +28,6 @@
       }
     ]
   },
-  "ts-node": {
-    "compilerOptions": {
-      "module": "commonjs",
-      "moduleResolution": "node"
-    }
-  },
   "include": [
     "next-env.d.ts",
     "**/*.ts",