What probably matters to youSection of the release
What
Plugins now have a filesystem API with readFile, writeFile, exists, stat, and listDir operations, all scoped to a resolved working directory. Both reads and writes are capped at 4,194,304 bytes (4MB); exceeding the limit returns an explicit refusal saying the file is over the byte limit.
Why
This lets plugins interact directly with files on disk in a controlled way, with a size limit that prevents a plugin from reading or writing unexpectedly huge files.
