instance.sh: the staff's log may hold acts that name nobody

Since R6 an act on one of the acting login's own personas is logged without its name, and every persona of the pasture
is the root's, so the scenario's log check takes an entry with no name too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WpVCoDeM1qUTRp4fXQdfof

tools/pasture/scenarios/instance.sh

@@ -207,9 +207,10 @@ missing=$(echo "$log" | j "
 seen={i['action'] for i in d['items']}
 print(' '.join(sorted({'root.promote','settings.update','rule.insert','rule.update','rule.delete','domain_block.insert','domain_block.delete','report.resolve','announcement.insert','announcement.update','announcement.delete','settings.thumbnail','relay.insert','relay.delete'} - seen)))")
 [ -z "$missing" ] && [ -n "$log" ] && ok "it lists every act of the scenario" || ko "the log misses: $missing"
-[ "$(echo "$log" | j "print(all(i.get('by') in ('$ROOT_USER', 'cli') for i in d['items']))")" = True ] \
+# an act on one of the acting login's own personas names nobody (R6), and the pasture's personas are all the root's
+[ "$(echo "$log" | j "print(all(i.get('by') in ('$ROOT_USER', 'cli', None) for i in d['items']))")" = True ] \
 	&& [ "$(echo "$log" | j "print(any(i['action'] == 'root.promote' and i.get('by') == 'cli' for i in d['items']))")" = True ] \
-	&& ok "each by the administrator's login, or the command line's" || ko "the log names someone else"
+	&& ok "each by the administrator's login, the command line's, or nobody's" || ko "the log names someone else: $(echo "$log" | j "print(sorted({str(i.get('by')) for i in d['items']}))")"
 echo "$log" | grep -qE '127\.0\.0\.1|11\.42\.|::1' && ko "the log holds an address" || ok "and holds no address"
 page=$(api "$ADMIN" GET "/clientapi/moderator/log?limit=2")
 next=$(echo "$page" | j "print(d['next'])")