/* Agent Engine — stack & structure page deltas, on top of the swl-* kit.
   Backend lane + a thin-client Frontend lane (module has no own UI). Fills the
   kit's .swl-defer callout twice — the deferred external-orchestration decision
   (n8n) and the shared tool-calling harness pointer — with no bespoke callout
   CSS (the shape comes from modules/swimlane.css). The only local delta is a
   gap above the second column head.
   Loaded by _workzone/stack.html on top of ../../swimlane.css.
   Placement convention: docs/architecture/README.md §Styling. */

/* Second column head (API routes follows the structure tree + its note) needs
   a clear gap so it reads as a new block, not a continuation of the one above. */
.swl-col__head:not(:first-child) {
  margin-top: 1.5rem;
}