Kea3D Core 0.1.100 source

Matching source for native release discovery: optional startup/manual checks and platform-specific public release channels. No automatic binary replacement. Source ZIP SHA256: e30a4884dfc3d6e4a6532cd811dc9313106dce63eebf828937d245ec79d76c2c. Windows native OCCT rebuild instructions are included; exact dependency source is linked in native/cad-worker/README.md. Public binary downloads and store releases are managed separately.