feat(agent): add visual event range picker

web/src/app/home/agents/components/AgentEventPatternPicker.tsx

@@ -0,0 +1,195 @@
+import { useMemo, useState } from 'react';
+import { Check, ChevronsUpDown } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
+import { Badge } from '@/components/ui/badge';
+import { Button } from '@/components/ui/button';
+import {
+  Command,
+  CommandEmpty,
+  CommandGroup,
+  CommandInput,
+  CommandItem,
+  CommandList,
+} from '@/components/ui/command';
+import {
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
+} from '@/components/ui/popover';
+import { cn } from '@/lib/utils';
+
+const FALLBACK_EVENTS = ['message.received'];
+
+interface AgentEventPatternPickerProps {
+  events: string[];
+  value: string[];
+  onChange: (patterns: string[]) => void;
+}
+
+function eventNamespaces(events: string[]) {
+  const counts = new Map<string, number>();
+  events.forEach((event) => {
+    if (event === '*' || event.endsWith('.*')) return;
+    const namespace = event.split('.')[0];
+    if (namespace) counts.set(namespace, (counts.get(namespace) ?? 0) + 1);
+  });
+  return Array.from(counts.entries())
+    .filter(([, count]) => count >= 2)
+    .map(([namespace]) => `${namespace}.*`)
+    .sort();
+}
+
+export default function AgentEventPatternPicker({
+  events,
+  value,
+  onChange,
+}: AgentEventPatternPickerProps) {
+  const { t } = useTranslation();
+  const [open, setOpen] = useState(false);
+  const selectedPatterns = useMemo(
+    () => (value.length > 0 ? value : ['*']),
+    [value],
+  );
+  const options = useMemo(() => {
+    const concreteEvents = Array.from(
+      new Set([
+        ...(events.length > 0 ? events : FALLBACK_EVENTS),
+        ...selectedPatterns.filter(
+          (pattern) => pattern !== '*' && !pattern.endsWith('.*'),
+        ),
+      ]),
+    ).sort();
+    const namespaces = Array.from(
+      new Set([
+        ...eventNamespaces(concreteEvents),
+        ...selectedPatterns.filter((pattern) => pattern.endsWith('.*')),
+      ]),
+    ).sort();
+    return ['*', ...namespaces, ...concreteEvents];
+  }, [events, selectedPatterns]);
+
+  function eventLabel(pattern: string) {
+    if (pattern === '*') return t('bots.eventWildcard');
+    if (pattern.endsWith('.*')) {
+      return t('bots.eventNamespaceWildcard', {
+        namespace: pattern.replace('.*', ''),
+      });
+    }
+    const key = `bots.eventNames.${pattern.replace(/\./g, '_')}`;
+    const label = t(key);
+    return label === key ? pattern : label;
+  }
+
+  function eventDescription(pattern: string) {
+    if (pattern === '*') return t('bots.eventDescriptions.all');
+    if (pattern.endsWith('.*')) {
+      return t('bots.eventDescriptions.namespace');
+    }
+    const key = `bots.eventDescriptions.${pattern.replace(/\./g, '_')}`;
+    const description = t(key);
+    return description === key
+      ? t('bots.eventDescriptions.custom')
+      : description;
+  }
+
+  function togglePattern(pattern: string) {
+    if (pattern === '*') {
+      onChange(['*']);
+      return;
+    }
+
+    if (selectedPatterns.includes(pattern)) {
+      const next = selectedPatterns.filter((item) => item !== pattern);
+      onChange(next.length > 0 ? next : ['*']);
+      return;
+    }
+
+    let next = selectedPatterns.filter((item) => item !== '*');
+    const namespace = pattern.split('.')[0];
+    if (pattern.endsWith('.*')) {
+      next = next.filter(
+        (item) => item.split('.')[0] !== namespace || item.endsWith('.*'),
+      );
+    } else {
+      next = next.filter((item) => item !== `${namespace}.*`);
+    }
+    onChange(Array.from(new Set([...next, pattern])));
+  }
+
+  return (
+    <Popover open={open} onOpenChange={setOpen}>
+      <PopoverTrigger asChild>
+        <Button
+          type="button"
+          variant="outline"
+          role="combobox"
+          aria-expanded={open}
+          aria-label={t('agents.supportedEvents')}
+          className="h-auto min-h-10 w-full min-w-0 justify-between gap-2 px-3 py-2 font-normal"
+        >
+          <span className="flex min-w-0 flex-1 flex-wrap gap-1.5">
+            {selectedPatterns.slice(0, 3).map((pattern) => (
+              <Badge
+                key={pattern}
+                variant="secondary"
+                className="max-w-full rounded-md font-normal"
+              >
+                <span className="truncate">{eventLabel(pattern)}</span>
+              </Badge>
+            ))}
+            {selectedPatterns.length > 3 && (
+              <Badge variant="outline" className="rounded-md font-normal">
+                +{selectedPatterns.length - 3}
+              </Badge>
+            )}
+          </span>
+          <ChevronsUpDown className="size-4 shrink-0 text-muted-foreground" />
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent
+        align="start"
+        className="w-[var(--radix-popover-trigger-width)] p-0"
+      >
+        <Command>
+          <CommandInput placeholder={t('agents.searchEvents')} />
+          <CommandList>
+            <CommandEmpty>{t('agents.noEventsFound')}</CommandEmpty>
+            <CommandGroup heading={t('agents.supportedEvents')}>
+              {options.map((pattern) => {
+                const selected = selectedPatterns.includes(pattern);
+                return (
+                  <CommandItem
+                    key={pattern}
+                    value={`${eventLabel(pattern)} ${pattern}`}
+                    onSelect={() => togglePattern(pattern)}
+                    className="items-start gap-2 py-2"
+                  >
+                    <Check
+                      className={cn(
+                        'mt-0.5 size-4 shrink-0',
+                        selected ? 'opacity-100' : 'opacity-0',
+                      )}
+                    />
+                    <span className="min-w-0 flex-1">
+                      <span className="flex min-w-0 items-center gap-2">
+                        <span className="truncate font-medium">
+                          {eventLabel(pattern)}
+                        </span>
+                        <code className="shrink-0 text-[10px] text-muted-foreground">
+                          {pattern}
+                        </code>
+                      </span>
+                      <span className="mt-0.5 block text-xs text-muted-foreground">
+                        {eventDescription(pattern)}
+                      </span>
+                    </span>
+                  </CommandItem>
+                );
+              })}
+            </CommandGroup>
+          </CommandList>
+        </Command>
+      </PopoverContent>
+    </Popover>
+  );
+}

web/src/app/home/agents/components/AgentFormComponent.tsx

@@ -23,7 +23,6 @@ import {
 import DynamicFormComponent from '@/app/home/components/dynamic-form/DynamicFormComponent';
 import { extractI18nObject } from '@/i18n/I18nProvider';
 import { Tabs, TabsList, TabsTrigger } from '@/components/ui/tabs';
-import { Textarea } from '@/components/ui/textarea';
 import {
   Card,
   CardContent,
@@ -33,13 +32,12 @@ import {
 } from '@/components/ui/card';
 import {
   Form,
-  FormControl,
   FormDescription,
   FormField,
   FormItem,
-  FormLabel,
   FormMessage,
 } from '@/components/ui/form';
+import AgentEventPatternPicker from './AgentEventPatternPicker';
 
 export interface AgentRunnerStatus {
   label: string;
@@ -114,8 +112,11 @@ function AgentFormComponent(
     useState<ApiRespPluginSystemStatus | null>(null);
   const [pluginStatusLoading, setPluginStatusLoading] = useState(true);
   const [pluginStatusError, setPluginStatusError] = useState(false);
+  const [availableEventTypes, setAvailableEventTypes] = useState<string[]>([
+    'message.received',
+  ]);
   const [activeSection, setActiveSection] =
-    useState<AgentConfigSection>('events');
+    useState<AgentConfigSection>('runner');
   const isSavingRef = useRef(false);
   const hasUnsavedChangesRef = useRef(false);
 
@@ -127,7 +128,7 @@ function AgentFormComponent(
     }),
     runner: z.record(z.string(), z.any()),
     runner_config: z.record(z.string(), z.any()),
-    supported_event_patterns_text: z.string(),
+    supported_event_patterns: z.array(z.string()).min(1),
   });
   type FormValues = z.infer<typeof formSchema>;
 
@@ -141,7 +142,7 @@ function AgentFormComponent(
       },
       runner: {},
       runner_config: {},
-      supported_event_patterns_text: '*',
+      supported_event_patterns: ['*'],
     },
   });
 
@@ -160,10 +161,22 @@ function AgentFormComponent(
 
   useEffect(() => {
     let cancelled = false;
-    Promise.all([httpClient.getAgentMetadata(), httpClient.getAgent(agentId)])
+    Promise.all([
-      .then(([metadata, resp]) => {
+      httpClient.getAgentMetadata(),
+      httpClient.getAgent(agentId),
+      httpClient.getAdapters().catch(() => ({ adapters: [] })),
+    ])
+      .then(([metadata, resp, adaptersResp]) => {
         if (cancelled) return;
         setRunnerConfigSchema(metadata.runner_config ?? null);
+        const adapterEvents = adaptersResp.adapters.flatMap(
+          (adapter) => adapter.spec.supported_events ?? [],
+        );
+        setAvailableEventTypes(
+          adapterEvents.length > 0
+            ? Array.from(new Set(adapterEvents)).sort()
+            : ['message.received'],
+        );
         const agent = resp.agent;
         const config = (agent.config ?? {}) as Record<string, any>;
         const loadedValues: FormValues = {
@@ -175,10 +188,8 @@ function AgentFormComponent(
           runner: (config.runner as Record<string, unknown>) ?? {},
           runner_config:
             (config.runner_config as Record<string, unknown>) ?? {},
-          supported_event_patterns_text: (
+          supported_event_patterns: agent.supported_event_patterns ??
-            agent.supported_event_patterns ??
+            agent.capability?.supported_event_patterns ?? ['*'],
-            agent.capability?.supported_event_patterns ?? ['*']
-          ).join('\n'),
         };
         form.reset(loadedValues);
         savedSnapshotRef.current = JSON.stringify(loadedValues);
@@ -250,11 +261,6 @@ function AgentFormComponent(
     label: string;
     icon: React.ElementType;
   }> = [
-    {
-      name: 'events',
-      label: t('agents.bindableEvents'),
-      icon: Zap,
-    },
     {
       name: 'runner',
       label: t('agents.runnerSettings'),
@@ -267,6 +273,11 @@ function AgentFormComponent(
         : t('pipelines.configuration'),
       icon: SlidersHorizontal,
     },
+    {
+      name: 'events',
+      label: t('agents.bindableEvents'),
+      icon: Zap,
+    },
   ];
 
   const runnerStatus = useMemo<AgentRunnerStatus>(() => {
@@ -423,14 +434,6 @@ function AgentFormComponent(
     );
   }
 
-  function normalizeEventPatterns(value: string): string[] {
-    const patterns = value
-      .split(/[\n,]/)
-      .map((item) => item.trim())
-      .filter(Boolean);
-    return patterns.length > 0 ? patterns : ['*'];
-  }
-
   const saveValues = useCallback(
     async (values: FormValues) => {
       if (isSavingRef.current) return false;
@@ -441,9 +444,7 @@ function AgentFormComponent(
         description: values.basic.description ?? '',
         emoji: values.basic.emoji,
         component_ref: (runner.id as string) || null,
-        supported_event_patterns: normalizeEventPatterns(
+        supported_event_patterns: values.supported_event_patterns,
-          values.supported_event_patterns_text,
-        ),
         config: {
           runner,
           runner_config: values.runner_config ?? {},
@@ -525,14 +526,18 @@ function AgentFormComponent(
                 setActiveSection(value as AgentConfigSection)
               }
             >
-              <div className="overflow-x-auto">
+              <div className="min-w-0">
-                <TabsList className="grid min-w-[34rem] w-full grid-cols-3">
+                <TabsList className="grid h-auto w-full min-w-0 grid-cols-3">
                   {primarySections.map((section) => {
                     const Icon = section.icon;
                     return (
-                      <TabsTrigger key={section.name} value={section.name}>
+                      <TabsTrigger
-                        <Icon />
+                        key={section.name}
-                        {section.label}
+                        value={section.name}
+                        className="min-w-0 gap-1.5 px-2"
+                      >
+                        <Icon className="size-4 shrink-0" />
+                        <span className="truncate">{section.label}</span>
                       </TabsTrigger>
                     );
                   })}
@@ -588,17 +593,14 @@ function AgentFormComponent(
                   <CardContent>
                     <FormField
                       control={form.control}
-                      name="supported_event_patterns_text"
+                      name="supported_event_patterns"
                       render={({ field }) => (
                         <FormItem>
-                          <FormLabel>{t('agents.supportedEvents')}</FormLabel>
+                          <AgentEventPatternPicker
-                          <FormControl>
+                            events={availableEventTypes}
-                            <Textarea
+                            value={field.value}
-                              {...field}
+                            onChange={field.onChange}
-                              className="min-h-32 font-mono text-sm"
+                          />
-                              placeholder={'*\nmessage.received\ngroup.*'}
-                            />
-                          </FormControl>
                           <FormDescription>
                             {t('agents.supportedEventsDescription')}
                           </FormDescription>

web/src/i18n/locales/en-US.ts

@@ -698,7 +698,9 @@ const enUS = {
       'Limit which bot event routes can select this Agent. The default is suitable for most cases.',
     supportedEvents: 'Event Range',
     supportedEventsDescription:
-      'Use one event pattern per line, for example *, message.received, group.*. Pipelines are fixed to message.*.',
+      'Choose all events, an event group, or individual events. Bot routes will only list this Agent for matching events.',
+    searchEvents: 'Search events…',
+    noEventsFound: 'No matching events found',
     nameRequired: 'Name cannot be empty',
     createSuccess: 'Created successfully',
     createError: 'Creation failed: ',

web/src/i18n/locales/es-ES.ts

@@ -533,7 +533,9 @@ const esES = {
       'Limita qué rutas de eventos del bot pueden seleccionar este Agent. El valor predeterminado sirve para la mayoría de los casos.',
     supportedEvents: 'Rango de eventos',
     supportedEventsDescription:
-      'Usa un patrón de evento por línea, por ejemplo *, message.received, group.*. Los Pipelines están fijos en message.*.',
+      'Elige todos los eventos, un grupo o eventos concretos. Las rutas del bot solo mostrarán este Agent para los eventos compatibles.',
+    searchEvents: 'Buscar eventos…',
+    noEventsFound: 'No se encontraron eventos',
     nameRequired: 'El nombre no puede estar vacío',
     createSuccess: 'Creado correctamente',
     createError: 'Error al crear: ',

web/src/i18n/locales/ja-JP.ts

@@ -713,7 +713,9 @@ const jaJP = {
       'この Agent を選択できるボットイベントルートの範囲を制限します。通常は既定値のままで問題ありません。',
     supportedEvents: 'イベント範囲',
     supportedEventsDescription:
-      '1 行に 1 つのイベントパターンを指定します。例: *、message.received、group.*。Pipeline は message.* 固定です。',
+      'すべてのイベント、イベントグループ、または個別のイベントを選択します。ボットルートでは一致するイベントにのみこの Agent が表示されます。',
+    searchEvents: 'イベントを検索…',
+    noEventsFound: '一致するイベントがありません',
     nameRequired: '名前は必須です',
     createSuccess: '作成に成功しました',
     createError: '作成に失敗しました：',

web/src/i18n/locales/ru-RU.ts

@@ -530,7 +530,9 @@ const ruRU = {
       'Ограничьте, какие маршруты событий бота могут выбирать этот Agent. Обычно достаточно значения по умолчанию.',
     supportedEvents: 'Диапазон событий',
     supportedEventsDescription:
-      'Один шаблон события в строке, например *, message.received, group.*. Pipeline фиксирован на message.*.',
+      'Выберите все события, группу или отдельные события. В маршрутах бота этот Agent будет доступен только для подходящих событий.',
+    searchEvents: 'Поиск событий…',
+    noEventsFound: 'Подходящие события не найдены',
     nameRequired: 'Имя не может быть пустым',
     createSuccess: 'Успешно создано',
     createError: 'Ошибка создания: ',

web/src/i18n/locales/th-TH.ts

@@ -516,7 +516,9 @@ const thTH = {
       'จำกัดว่าเส้นทางเหตุการณ์ของบอทใดสามารถเลือก Agent นี้ได้ ค่าเริ่มต้นเหมาะกับกรณีส่วนใหญ่',
     supportedEvents: 'ช่วงเหตุการณ์',
     supportedEventsDescription:
-      'หนึ่งรูปแบบเหตุการณ์ต่อบรรทัด เช่น *, message.received, group.* Pipeline ถูกกำหนดไว้ที่ message.*',
+      'เลือกเหตุการณ์ทั้งหมด กลุ่มเหตุการณ์ หรือเหตุการณ์ที่ต้องการ เส้นทางบอทจะแสดง Agent นี้เฉพาะเหตุการณ์ที่ตรงกัน',
+    searchEvents: 'ค้นหาเหตุการณ์…',
+    noEventsFound: 'ไม่พบเหตุการณ์ที่ตรงกัน',
     nameRequired: 'ชื่อต้องไม่ว่างเปล่า',
     createSuccess: 'สร้างสำเร็จ',
     createError: 'สร้างล้มเหลว: ',

web/src/i18n/locales/vi-VN.ts

@@ -526,7 +526,9 @@ const viVN = {
       'Giới hạn những tuyến sự kiện bot có thể chọn Agent này. Mặc định phù hợp với hầu hết trường hợp.',
     supportedEvents: 'Phạm vi sự kiện',
     supportedEventsDescription:
-      'Mỗi dòng một mẫu sự kiện, ví dụ *, message.received, group.*. Pipeline cố định ở message.*.',
+      'Chọn tất cả sự kiện, một nhóm hoặc từng sự kiện. Tuyến bot chỉ hiển thị Agent này cho các sự kiện phù hợp.',
+    searchEvents: 'Tìm sự kiện…',
+    noEventsFound: 'Không tìm thấy sự kiện phù hợp',
     nameRequired: 'Tên không được để trống',
     createSuccess: 'Tạo thành công',
     createError: 'Tạo thất bại: ',

web/src/i18n/locales/zh-Hans.ts

@@ -668,7 +668,9 @@ const zhHans = {
       '限制此 Agent 可被机器人事件路由选择的事件范围。通常保持默认即可。',
     supportedEvents: '事件范围',
     supportedEventsDescription:
-      '每行一个事件模式，例如 *、message.received、group.*。Pipeline 固定仅支持 message.*。',
+      '选择全部事件、事件组或具体事件。机器人路由只会在匹配的事件中显示此 Agent。',
+    searchEvents: '搜索事件…',
+    noEventsFound: '没有匹配的事件',
     nameRequired: '名称不能为空',
     createSuccess: '创建成功',
     createError: '创建失败：',

web/src/i18n/locales/zh-Hant.ts

@@ -499,7 +499,9 @@ const zhHant = {
       '限制此 Agent 可被機器人事件路由選擇的事件範圍。通常保持預設即可。',
     supportedEvents: '事件範圍',
     supportedEventsDescription:
-      '每行一個事件模式，例如 *、message.received、group.*。Pipeline 固定僅支援 message.*。',
+      '選擇全部事件、事件群組或具體事件。機器人路由只會在符合的事件中顯示此 Agent。',
+    searchEvents: '搜尋事件…',
+    noEventsFound: '沒有符合的事件',
     nameRequired: '名稱不能為空',
     createSuccess: '建立成功',
     createError: '建立失敗：',

web/tests/e2e/crud-smoke.spec.ts

@@ -758,7 +758,10 @@ test.describe('agent and pipeline save concurrency', () => {
   test('agent save freezes its payload and keeps later edits dirty', async ({
     page,
   }) => {
-    await installLangBotApiMocks(page, { authenticated: true });
+    await installLangBotApiMocks(page, {
+      authenticated: true,
+      withAdapterEvents: true,
+    });
     const delayedSave = await installDelayedFirstSave(
       page,
       '/api/v1/agents/agent-save-race',
@@ -770,12 +773,23 @@ test.describe('agent and pipeline save concurrency', () => {
     const eventPatterns = page.getByLabel('Event Range');
     await expect(eventPatterns).toBeVisible();
 
-    await eventPatterns.fill('message.received');
+    await eventPatterns.click();
+    await page
+      .getByRole('option')
+      .filter({ hasText: 'message.received' })
+      .click();
+    await page.keyboard.press('Escape');
     await saveButton.click();
     await expect.poll(() => delayedSave.payloads.length).toBe(1);
     await expect(saveButton).toBeDisabled();
 
-    await eventPatterns.fill('group.*');
+    await eventPatterns.click();
+    await page.getByRole('option').filter({ hasText: 'group.*' }).click();
+    await page
+      .getByRole('option')
+      .filter({ hasText: 'message.received' })
+      .click();
+    await page.keyboard.press('Escape');
     await forceFormSubmit(page, '#agent-form');
     expect(delayedSave.payloads).toHaveLength(1);
     await expect(saveButton).toBeDisabled();

web/tests/e2e/fixtures/langbot-api.ts

@@ -106,6 +106,7 @@ interface LangBotApiMockState {
   sessionAnalyses: Record<string, unknown>;
   sessionMessages: Record<string, unknown[]>;
   skills: SkillMock[];
+  withAdapterEvents: boolean;
   withRunnerToolSelector: boolean;
   workspaces: WorkspaceEntryMock[];
 }
@@ -514,7 +515,7 @@ function makeBot(
   };
 }
 
-function mockAdapters() {
+function mockAdapters(withAdapterEvents = false) {
   return [
     {
       name: 'playwright-adapter',
@@ -528,6 +529,17 @@ function mockAdapters() {
       },
       spec: {
         categories: ['testing'],
+        ...(withAdapterEvents
+          ? {
+              supported_events: [
+                'message.received',
+                'message.edited',
+                'group.member_joined',
+                'group.member_left',
+                'feedback.received',
+              ],
+            }
+          : {}),
         config: [],
       },
     },
@@ -621,7 +633,9 @@ async function handleBackendApi(route: Route, state: LangBotApiMockState) {
   }
 
   if (path === '/api/v1/platform/adapters') {
-    return fulfillJson(route, { adapters: mockAdapters() });
+    return fulfillJson(route, {
+      adapters: mockAdapters(state.withAdapterEvents),
+    });
   }
 
   if (path === '/api/v1/platform/bots') {
@@ -1230,6 +1244,7 @@ export async function installLangBotApiMocks(
     sessionAnalyses?: Record<string, unknown>;
     sessionMessages?: Record<string, unknown[]>;
     storage?: JsonRecord;
+    withAdapterEvents?: boolean;
     withRunnerToolSelector?: boolean;
     workspaces?: WorkspaceEntryMock[];
   } = {},
@@ -1241,6 +1256,7 @@ export async function installLangBotApiMocks(
     sessionAnalyses,
     sessionMessages,
     storage = {},
+    withAdapterEvents = false,
     withRunnerToolSelector = false,
     workspaces = [defaultWorkspaceEntry()],
   } = options;
@@ -1256,6 +1272,7 @@ export async function installLangBotApiMocks(
     sessionAnalyses: sessionAnalyses || {},
     sessionMessages: sessionMessages || {},
     skills: [],
+    withAdapterEvents,
     withRunnerToolSelector,
     workspaces,
   };

web/tests/e2e/processor-detail-workbench.spec.ts

@@ -10,6 +10,7 @@ test.describe('processor detail workbench', () => {
   }) => {
     await installLangBotApiMocks(page, {
       authenticated: true,
+      withAdapterEvents: true,
       withRunnerToolSelector: true,
     });
 
@@ -45,14 +46,23 @@ test.describe('processor detail workbench', () => {
     expect(debugBox!.y).toBeGreaterThanOrEqual(0);
 
     const flow = configPanel.getByRole('tablist');
-    await expect(flow.getByRole('tab').nth(0)).toContainText(
+    await expect(flow.getByRole('tab').nth(0)).toContainText('Runner');
+    await expect(flow.getByRole('tab').nth(1)).toContainText('Local Agent');
+    await expect(flow.getByRole('tab').nth(2)).toContainText(
       'Bindable Event Range',
     );
-    await expect(flow.getByRole('tab').nth(1)).toContainText('Runner');
-    await expect(flow.getByRole('tab').nth(2)).toContainText('Local Agent');
     await expect(flow.getByRole('tab')).toHaveCount(3);
     await expect(flow.getByText('Management')).toHaveCount(0);
 
+    await page.setViewportSize({ width: 1024, height: 900 });
+    const tabListMetrics = await flow.evaluate((element) => ({
+      clientWidth: element.clientWidth,
+      scrollWidth: element.scrollWidth,
+    }));
+    expect(tabListMetrics.scrollWidth).toBeLessThanOrEqual(
+      tabListMetrics.clientWidth,
+    );
+
     await expect(
       page.getByRole('heading', { name: /agent-workbench/ }),
     ).toBeVisible();
@@ -83,11 +93,22 @@ test.describe('processor detail workbench', () => {
         .last(),
     ).toBeVisible();
 
-    await flow.getByRole('tab').nth(0).click();
+    await flow.getByRole('tab').nth(2).click();
     await expect(
       configPanel.getByText('Bindable Event Range', { exact: true }).last(),
     ).toBeVisible();
-    await flow.getByRole('tab').nth(2).click();
+    const eventPicker = configPanel.getByRole('combobox', {
+      name: 'Event Range',
+    });
+    await expect(eventPicker).toBeVisible();
+    await expect(configPanel.getByRole('textbox')).toHaveCount(0);
+    await eventPicker.click();
+    await expect(
+      page.getByRole('option').filter({ hasText: 'message.received' }),
+    ).toBeVisible();
+    await page.keyboard.press('Escape');
+
+    await flow.getByRole('tab').nth(1).click();
     await expect(
       configPanel.getByText('Local Agent', { exact: true }).last(),
     ).toBeVisible();