Warren 70cc6d9921 Implement VFS compression support (ZSTD) ...

- Add VfsCompression and VfsCompressionConfig types
- Add compression module with Compressor:
  - compress/decompress methods
  - compress_file/decompress_file utilities
  - should_compress threshold check
  - extension detection (.zst, .lz4)
- Add zstd crate dependency
- LZ4 placeholder (future implementation)

Enables SMB transparent compression.

All 229 tests pass.

2026-06-20 22:21:50 +08:00

3.1 KiB

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