Replaces the config target with wpak, which handles every known pak or a
single one named on the command line. Map icon .tga entries are stored
unencrypted (sb.exe 0xAACA60).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A .wpak is a zip whose entries are each Blowfish CFB-64 encrypted with
a zero IV and the client's hardcoded key (sb.exe 0x54DEC0). Pure Python
Blowfish, no new dependencies.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>