Investigate remaining ByteBuffer dependency in the legacy serializer

Context

While integrating @beblurt/dblurt into a modern Angular 22 SSR application (blurt-blockchain-join), Node.js reports the following deprecation warning:

(node:27158) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues.
Please use Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.

Using --trace-deprecation points to the remaining bytebuffer dependency used by the legacy serializer:

node_modules/bytebuffer/dist/bytebuffer-node.js
  ↓
@beblurt/dblurt/lib/chain/serializer.js
  ↓
@beblurt/dblurt/lib/helpers/tools.js

Notes

This is not caused by @beblurt/dblurt directly using Buffer(). The warning originates from the bytebuffer package itself.

Investigation

Determine whether:

• upgrading bytebuffer removes the warning;
• the dependency can be eliminated entirely;
• or the serializer should be modernized to remove the remaining dependency.

The goal is to remove the runtime deprecation warning while preserving serializer compatibility.