Release Notes: v4.0.0 OmniCrown

Added

Whole-archive password mode hiding manifest, file names, and metadata.
PBKDF2-HMAC-SHA256 + ChaCha20 + HMAC-SHA256 password envelope.
Optional GF(256) two-parity recovery records.
repair command.
compat-zip command.
hvce_gui.py Tkinter GUI.
Windows context-menu PowerShell installer.
Compact lzma/zlib adaptive manifest compression.
Solid small-file micro-pack for office/source folders.
Faster high-entropy skip path.
Safer extraction policy for symlinks.
Expanded benchmark corpora: small office, photonic generators, versioned media, already-compressed, random control.

v3 archive format is superseded by HVCE4.
Header compression now chooses zlib or lzma.
Encrypted archives now hide all private manifest content.
Small files default to microgroups when beneficial.
Random and media-like data is explicitly treated as an archiver state problem, not a false compression-ratio promise.

This reference implementation reads HVCE4 archives produced by this package. It is not a stable long-term container standard yet.