Add --ip filter to welcomebot-logs for signup-scrutiny decisions

bin/welcomebot-logs

@@ -24,6 +24,7 @@ Options:
       --since WHEN     Only logs newer than WHEN (e.g. 1h, 30m, 2026-06-17, 2026-06-17T20:00).
       --abuse          Only abuse-handler lines (reports, silences, dry-run, tiers).
       --welcome        Only welcome lines.
+      --ip             Only IP-scrutiny lines (classifications, ip_block writes, RDAP errors).
   -g, --grep PATTERN   Only lines matching PATTERN (extended regex).
   -h, --help           Show this help.
 
@@ -32,6 +33,7 @@ Examples:
   welcomebot-logs -f --abuse       # follow live abuse activity only
   welcomebot-logs -n 1000 --since 24h
   welcomebot-logs -g 'acct=spammer'
+  welcomebot-logs --ip --since 24h # recent signup-IP classification decisions
 EOF
 }
 
@@ -42,6 +44,7 @@ while [ $# -gt 0 ]; do
     --since)     shift; since="${1:?--since needs a value}" ;;
     --abuse)     pattern='welcomebot (report |auto-|\[DRY-RUN\]|tier=|silenc|holds a staff|allowlisted)' ;;
     --welcome)   pattern='welcomebot (welcomed|already welcomed|skipping non-local|queued)' ;;
+    --ip)        pattern='welcomebot (flagged signup|RDAP lookup failed|ip_block|unparseable ip)' ;;
     -g|--grep)   shift; pattern="${1:?--grep needs a value}" ;;
     -h|--help)   usage; exit 0 ;;
     *) echo "welcomebot-logs: unknown option: $1" >&2; usage >&2; exit 2 ;;