CLI: shorter, plainer output

Tables name a journal source by its first two units or identifiers;
guard test shows 20 matching lines and addresses (--all for all), no
/32; Housecarl connection errors without Go's request URL, said once by
guard check; status tells "not running" from "no permission"; bans says
when there are none; "1 ban lifted".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -36,3 +36,15 @@ All notable changes to Guard are documented here. The format follows
   `SupplementaryGroups`. `sudo -u guard guard test` and `guard check`
   could read neither `/var/log`'s files (`permission denied`) nor the
   journal. Upgrading adds the groups.
+- Shorter, plainer command output. Tables name a journal source by its
+  first two units or identifiers (`journal postfix/smtpd,
+  postfix/submission/smtpd +1`), so `presets`, `check` and `status`
+  fit a normal terminal. `guard test` prints the first 20 matching
+  lines (not 200) and the first 20 addresses it would ban (`--all` for
+  every one), single addresses without `/32`, and counts the matches
+  from `never_ban` addresses. When Housecarl doesn't answer, `guard check`
+  says so once ("Housecarl at URL doesn't answer: connection refused")
+  instead of once per ban list with the request's URL, and only asks for
+  `log:read` when Housecarl refused the log. `guard status` tells "not
+  running" from "no permission". `guard bans` says when there are none;
+  `guard unban` says "1 ban lifted".