1.3.0

Needs PHP 8.3 or newer and OpenSSH 8.1 or newer. Download both assets,
keep the binary named devnull-1.3.0 so the checksum matches,
and verify with sha256sum --ignore-missing -c SHA256SUMS before installing it.

Added

• login: approve this machine as a device on /dev/null, the way the site's phone app signs in,
  for the signed API. It makes its own key in ~/.config/devnull/, apart from the keys in
  ~/.ssh, and takes the code back by paste, since nothing here opens the devnull:// link it
  arrives in.
• me, log and replies commands, reading as the signed-in user: who that is and their unread
  count, the following, latest and trending logs, and a commit's replies, with --json for a
  script.
• me, log and replies MCP tools for the same reads. The server is still read-only, and has no
  notifications tool, because listing notifications marks them all read.