fix(release): macOS archive missing libcvc dylib and cmake configs

[transfix]

Problem

The macOS release archives from v3.2.3 are missing libcvc.dylib (all variants: .3.0.dylib, .3.dylib, .dylib) and the CMake package config files (cvcTargets.cmake, cvcConfig.cmake, etc). This causes downstream consumers (TexMol, MolSurf, F2Dock) to fail at configure time with find_package(cvc) unable to locate the library.

Root Cause

The dylibbundler -od flag in the release workflow's "Stage libcvc + bundle deps" step erases and recreates the output directory before copying transitive dependency dylibs. Since the output directory (-d $DIST/lib) is the same directory where cmake --install already placed:

• libcvc.3.0.dylib, libcvc.3.dylib, libcvc.dylib
• cmake/cvc/cvcTargets.cmake, cvcTargets-release.cmake
• cmake/cvc/cvcConfig.cmake, cvcConfigVersion.cmake

…the -od flag nukes all these files, then only repopulates with the bundled dependency dylibs (boost, hdf5, fftw, etc).

Evidence from the v3.2.3 release CI logs:

* Erasing old output directory .../libcvc-3.2.1-macos-arm64-release/lib/
    rm -r ".../libcvc-3.2.1-macos-arm64-release/lib/"
* Creating output directory .../libcvc-3.2.1-macos-arm64-release/lib/
    mkdir -p ".../libcvc-3.2.1-macos-arm64-release/lib/"

Fix

• Remove -od flag from dylibbundler invocation. The -of (overwrite files) flag already handles the case where a dependency file pre-exists in the output dir.
• Add zstd to brew install and apt-get install lines (matching the CI fix from PR feat: distributed state gap closure — 14 items #89).

Testing

After merge, tag v3.2.4 to produce corrected release archives. The macOS archives should then contain:

• lib/libcvc.3.0.dylib (the actual library)
• lib/libcvc.3.dylib → symlink
• lib/libcvc.dylib → symlink
• lib/cmake/cvc/cvcConfig.cmake
• lib/cmake/cvc/cvcTargets.cmake
• All bundled dependency dylibs (unchanged)