feat(n8n-webhook): add compact approval history views

skills/n8n-webhook/scripts/validate-workflow.py

@@ -34,6 +34,8 @@ SAMPLE_FILES = [
     'test-list-upcoming-events.json',
     'test-update-calendar-event.json',
     'test-delete-calendar-event.json',
+    'test-verify-email-draft-cycle.json',
+    'test-verify-calendar-event-cycle.json',
     'test-fetch-and-normalize-url.json',
     'test-approval-queue-list.json',
     'test-inbound-event-filter.json',
@@ -71,6 +73,11 @@ ROUTER_SNIPPETS = [
     'calendar_event_update',
     'calendar_event_delete',
     'makeApprovalPolicy',
+    'pending_compact',
+    'history_compact',
+    'summary_line',
+    'result_refs',
+    'default_mode',
     'inboundEvents',
     'eventDedup',
     'notify_text',