Sol review sys1-review-r1 (changes 3): - P1: project_system_types joins stack-release.sh COUNTED and the T45 LISTED pin; the post-backup refusal and in-run recount tests now cover it. - P2: the CLI channel admits project.system-types and project.system-types.set; a new test drives both through run() and the real channel module (1/1 red without the fix). - P2: the #811 migration-reader pin moves to 19 steps ending 3t-3u.