Changelog for `@signaldb/fs`

Switched to new StorageAdapter API.
The adapter is given a folder, not a file, and the on-disk layout changed with it. createFileSystemAdapter('data.json') used to write one JSON file holding the whole collection; it now takes a directory and writes one file per document under items/ — sharded over two levels by the document's id — and one file per indexed value under index/. A write therefore costs one file rather than a rewrite of the entire collection. Data written by v1 is not read by v2: point the adapter at a fresh directory and import your old JSON file into the collection once, or keep the old file and write a one-off migration that inserts its contents.
Removed compatibility with @signaldb/core versions below 2.0.0

@signaldb/generic-fs is no longer bundled into this package. It was already declared as a dependency, so consumers installed it and received a second copy compiled into dist — about 7 kB of duplicated code in the shipped bundle, and two separate module instances at runtime. The built package is now roughly a third of its previous size.
Custom deserialize function now works correctly when file is empty (thanks to @krolebord!)

[1.0.1] - 2025-04-24