Release 2.16.5

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Boost version to 2.16.4

Boost version to 2.16.3

Boost version to 2.16.2

Boost version to 2.16.1

Boost version to 2.16.0

Release v2.15.3

Boost version to 2.15.2

Fix use of unexported cl-selfupdate:safe-print-version

Use semver:print-version-to-string directly instead.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Add Linux standalone tarball to release workflow

This enables self-update on Linux by providing an asset named
ocicl-VERSION-linux-amd64.tar.gz that matches the platform detection
patterns in cl-selfupdate.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>