* fix: improved record txt record matching
matching txt records sometimes failed if they contained certain chars causing leftover challenges in dns zone
* fix(dns_poweradmin): use portable record and zone matching
grep -o and grep -F are not supported by Solaris /usr/bin/grep.
Split JSON objects with the core _egrep_o wrapper and match name,
type and content with case, which is literal by construction. Loop
over a here-doc since case inside $(...) breaks bash 3.2 and
Solaris sh. Apply the same to _get_root.
Drop _json_escape: hostnames and base64url challenge values cannot
contain quotes or backslashes, so escaping was a no-op.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: neil <github@neilpang.com>
Co-authored-by: Jakob Næss <jakob@itsjefen.no>
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
