Summary

The codebase currently includes a custom flatbuffers implementation at
features/support/flatbuffers.cjs. It should be replaced with the official npm package.

Current State

• Custom implementation: features/support/flatbuffers.cjs
• NPM package already installed: "flatbuffers": "24.3.25"
• Package provides both CJS and ESM versions

Proposed Changes

1. Remove features/support/flatbuffers.cjs (duplicate file)
2. Update imports in dependent files to use import flatbuffers from 'flatbuffers'
3. Test that all functionality still works correctly

Files to update

• features/support/fbresult_generated.js
• Any other files importing the local flatbuffers