=== 2.3 STALE SCRATCH MARKER (R-358) - retry, plant written from a file this time ===
planted:
{"schema":1,"snapshot_id":"deadbeef","full":true,"finished_at":"2020-01-01T00:00:00Z"}
--- POSITIVE CONTROL: the assertions must SEE the planted values ---
  control ok: grep finds the planted id
  control ok: grep finds full:true
--- run a UNIT restore (full=false) ---
after:
{"schema":1,"snapshot_id":"180c5933","full":false,"finished_at":"2026-08-31T20:58:24Z"}--- assertions ---
  PASS: stale id cleared
  PASS: full:false - a unit restore does not advertise a full scratch
  PASS: timestamp rewritten
