v0.2.1 - Add writeBinaryBatch method for batch file writes

What's New

Features

• New writeBinaryBatch method added to FileSystemService, OPFSBackend, and IndexedDBBackend
  • Supports progress tracking, concurrency control, and automatic parent directory creation
• Types and documentation added
• Added MIT LICENSE file
• Added npm keywords to package.json
• Fixed ESM import paths (added .js extensions)

v0.2.0 - Worker support, batch reads, and performance improvements

What's New

Features

• Web Worker support - New @siglum/filesystem/worker module for accessing the filesystem
  from classic workers
• Storage constants - New @siglum/filesystem/constants for direct IndexedDB/OPFS access
• Batch reads - readBinaryBatch() for efficient multi-file reads in a single transaction
• Backend detection - getBackendType() to check which backend is mounted at a path

Bug Fixes

• Fixed readdir() incorrectly blocking directory entries when nested files exist

Performance

• exists() and stat() now use a single IndexedDB transaction (was 2)
• mkdir() batches all operations (2 transactions instead of 2n)
• readdir() uses IDBKeyRange prefix filtering instead of full table scan
• Write operations skip exists() check when no event handlers are subscribed

Infrastructure

• Added test suite with 55 tests
• Added prepublishOnly script for clean builds
• Full API documentation in README