Allow posture warnings before Borg

ops/borg-ui/scripts/pre-borg.sh

@@ -8,6 +8,7 @@ FRESHNESS_CHECK="${FRESHNESS_CHECK:-$REPO_ROOT/ops/restore-tests/check-restore-f
 PRE_BACKUP_DUMPS="${PRE_BACKUP_DUMPS:-$SCRIPT_DIR/pre-backup-dumps.sh}"
 NTFY_SCRIPT="${NTFY_SCRIPT:-$REPO_ROOT/ops/restore-tests/send-ntfy.sh}"
 NTFY_TOPIC="${NTFY_TOPIC:-kallilab-critical}"
+ALLOW_POSTURE_WARNING="${ALLOW_POSTURE_WARNING:-1}"
 
 notify_failure() {
   local step="$1"
@@ -31,7 +32,18 @@ run_step() {
   fi
 }
 
-run_step "posture-check" "$POSTURE_CHECK"
+echo "[pre-borg] Running posture-check"
+if "$POSTURE_CHECK"; then
+  echo "[pre-borg] OK: posture-check"
+else
+  rc=$?
+  if [ "$rc" -eq 1 ] && [ "$ALLOW_POSTURE_WARNING" = "1" ]; then
+    echo "[pre-borg] WARNING: posture-check returned warnings; continuing because ALLOW_POSTURE_WARNING=1"
+  else
+    notify_failure "posture-check" "Command failed with exit code $rc: $POSTURE_CHECK"
+    exit "$rc"
+  fi
+fi
 run_step "pre-backup-dumps" "$PRE_BACKUP_DUMPS"
 run_step "restore-freshness" "$FRESHNESS_CHECK"