swarmexec v1.22.2

The docs in the landing page's design. All five languages of the
documentation now share the look of the new landing page: the same fonts and
colours, light and dark mode (it was dark only), commands in terminal blocks, and
the same top bar with the language switch. The colours the docs use to show what
the TUI displays — a yellow "starting", a red "unhealthy" — were picked for a
dark page; they are now readable in both modes. The text itself is unchanged.

The docs are easy to find from the landing page: in the top bar next to
Install, on a phone too, and in the footer with the release notes. The install
section is headed "Setting it up".

Release logs say why a publish failed. When pushing the Homebrew formula or
the Scoop manifest fails, the release log now shows git's own reason — such as
GitHub answering "Internal Server Error" — with the token masked.

No agent update needed.

Apache-2.0, self-hosted, no telemetry.