feat(#117): agent-count toasts and persistent error toast dismiss

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/pages/Admin/AppConfigDetailPage.tsx

@@ -6,7 +6,7 @@ import {
 } from '@cameleer/design-system';
 import type { Column } from '@cameleer/design-system';
 import { useApplicationConfig, useUpdateApplicationConfig } from '../../api/queries/commands';
-import type { ApplicationConfig, TapDefinition } from '../../api/queries/commands';
+import type { ApplicationConfig, TapDefinition, ConfigUpdateResponse } from '../../api/queries/commands';
 import { useRouteCatalog } from '../../api/queries/catalog';
 import type { AppCatalogEntry, RouteSummary } from '../../api/types';
 import styles from './AppConfigDetailPage.module.css';
@@ -153,12 +153,17 @@ export default function AppConfigDetailPage() {
       routeRecording: routeRecordingDraft,
     } as ApplicationConfig;
     updateConfig.mutate(updated, {
-      onSuccess: (saved) => {
+      onSuccess: (saved: ConfigUpdateResponse) => {
         setEditing(false);
-        toast({ title: 'Config saved', description: `${appId} updated to v${saved.config.version}`, variant: 'success' });
+        if (saved.pushResult.success) {
+          toast({ title: 'Config saved', description: `${appId} updated to v${saved.config.version} — pushed to ${saved.pushResult.total}/${saved.pushResult.total} agents`, variant: 'success' });
+        } else {
+          const failed = [...saved.pushResult.responses.filter(r => r.status !== 'SUCCESS').map(r => r.agentId), ...saved.pushResult.timedOut];
+          toast({ title: 'Config saved — partial push failure', description: `${saved.pushResult.responded}/${saved.pushResult.total} responded. Failed: ${failed.join(', ')}`, variant: 'warning', duration: 86_400_000 });
+        }
       },
       onError: () => {
-        toast({ title: 'Save failed', description: 'Could not update configuration', variant: 'error' });
+        toast({ title: 'Save failed', description: 'Could not update configuration', variant: 'error', duration: 86_400_000 });
       },
     });
   }