DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
On Linux systems, Claude Code now reads /etc/os-release to capture linuxDistroId, linuxDistroVersion, and linuxKernel for improved platform-specific diagnostics.
Evidence
Distro detection (search for "linuxDistroId")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.