Changes in version 0.0.0.9000                      

  - Add write_uncompressed index generation and a validated end-to-end
    mmap_reference workflow, with an explicit disk-space tradeoff and a
    clear error when required uncompressed tables are absent.

  - Unmap each memory-mapped index file using its validated extent,
    preventing a teardown crash exposed by the package's small real mmap
    workflow.

  - Create static archives with portable ar options accepted by GNU and
    Darwin toolchains.

  - Use a pthread mutex-and-condition counter for the hash compressor on
    Darwin instead of deprecated unnamed POSIX semaphores.

  - Stop forcing the POSIX limits header into every imported C source
    because its Darwin NZERO macro conflicts with the hash generator
    under -Werror.

  - Probe GCC-only C tuning and warning flags separately from C++ tuning
    flags so Apple Clang can compile imported hash-generation sources
    under -Werror.

  - Use the portable POSIX limits header for imported metrics
    compilation on macOS.

  - Fix Apple Clang compilation for imported alignment extent and
    iterator initialization.

  - Build against the R-universe macOS Boost bundle and use POSIX and
    Darwin facilities where the imported Linux implementation was not
    portable.

  - Add a source-built R wrapper that owns and resolves dragen-os
    without searching PATH.

  - Add typed S7 results, operational error values, and contract
    conditions for reference generation and FASTQ to SAM alignment.

  - Add a reproducible native source archive, configure-time build,
    tinytest coverage, and tarball-based package Makefile workflow.