Compare views: start with a view the zone is linked to

The tab picked the first other view in view order, so a zone linked with
one view opened compared with an unrelated one.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/web/static/assets/pages/zone.js

@@ -88,7 +88,10 @@ export async function render(el, params, query) {
 // the same. ?name= (and &type=) narrows it to one name.
 async function compareTab(el, zone, query) {
   const others = zone.other_views || [];
-  const withSel = select([...(others.length > 1 ? [["", "all other views"]] : []), ...others.map((v) => [v, v])], query.get("with") || others[0] || "");
+  // A linked zone starts with a view it is linked to: that is the
+  // comparison that matters (its differences are its own records).
+  const linked = (zone.linked_with || []).filter((v) => others.includes(v));
+  const withSel = select([...(others.length > 1 ? [["", "all other views"]] : []), ...others.map((v) => [v, v])], query.get("with") || linked[0] || others[0] || "");
   const nameIn = input({ value: query.get("name") || "", placeholder: "all names, or one: www, @", class: "mono", style: { width: "200px" } });
   const typeIn = input({ value: query.get("type") || "", placeholder: "any type", class: "mono", style: { width: "90px" } });
   let showSame = false;