fix(cmdk): attribute clicks filter the exchange list via ?attr= instead of opening one exchange

ui/src/components/LayoutShell.tsx

@@ -111,7 +111,11 @@ function buildSearchData(
         id: `attr-key-${key}`,
         category: 'attribute',
         title: key,
-        meta: 'attribute key',
+        meta: 'attribute key — filter list',
+        // Path carries the facet in query-string form; handlePaletteSelect routes
+        // attribute results to the current scope, so the leading segment below is
+        // only used as a fallback when no scope is active.
+        path: `/exchanges?attr=${encodeURIComponent(key)}`,
       });
     }
   }
@@ -744,6 +748,32 @@ function LayoutContent() {
       setPaletteOpen(false);
       return;
     }
+
+    if (result.category === 'attribute') {
+      // Three sources feed 'attribute' results:
+      //   - buildSearchData → id `attr-key-<key>` (key-only)
+      //   - operationalSearchData per-exchange → id `<execId>-attr-<key>`, title `key = "value"`
+      //   - synthetic facet (Task 9) → id `facet-<serialized>` where <serialized> is already
+      //     the URL `attr=` form (`key` or `key:value`)
+      let attrParam: string | null = null;
+      if (typeof result.id === 'string' && result.id.startsWith('attr-key-')) {
+        attrParam = result.id.substring('attr-key-'.length);
+      } else if (typeof result.id === 'string' && result.id.startsWith('facet-')) {
+        attrParam = result.id.substring('facet-'.length);
+      } else if (typeof result.title === 'string') {
+        const m = /^([a-zA-Z0-9._-]+)\s*=\s*"([^"]*)"/.exec(result.title);
+        if (m) attrParam = `${m[1]}:${m[2]}`;
+      }
+      if (attrParam) {
+        const base = ['/exchanges'];
+        if (scope.appId) base.push(scope.appId);
+        if (scope.routeId) base.push(scope.routeId);
+        navigate(`${base.join('/')}?attr=${encodeURIComponent(attrParam)}`);
+      }
+      setPaletteOpen(false);
+      return;
+    }
+
     if (result.path) {
       if (ADMIN_CATEGORIES.has(result.category)) {
         const itemId = result.id.split(':').slice(1).join(':');
@@ -752,7 +782,7 @@ function LayoutContent() {
         });
       } else {
         const state: Record<string, unknown> = { sidebarReveal: result.path };
-        if (result.category === 'exchange' || result.category === 'attribute') {
+        if (result.category === 'exchange') {
           const parts = result.path.split('/').filter(Boolean);
           if (parts.length === 4 && parts[0] === 'exchanges') {
             state.selectedExchange = {
@@ -766,7 +796,7 @@ function LayoutContent() {
       }
     }
     setPaletteOpen(false);
-  }, [navigate, setPaletteOpen]);
+  }, [navigate, setPaletteOpen, scope.appId, scope.routeId]);
 
   const handlePaletteSubmit = useCallback((query: string) => {
     if (isAdminPage) {