feat(agent-platform): add scenario-based route creation

skills/scripts/e2e/bot-event-routing-product-flow.mjs

@@ -20,6 +20,10 @@ await loadEnvFiles();
 const paths = evidencePaths(caseId);
 await ensureEvidence(paths);
 const mobileScreenshot = paths.screenshot.replace(/\.png$/, "-mobile.png");
+const scenarioMenuScreenshot = paths.screenshot.replace(
+  /\.png$/,
+  "-scenario-menu.png",
+);
 
 const startedAt = new Date();
 const frontendUrl = process.env.LANGBOT_FRONTEND_URL || "";
@@ -50,6 +54,7 @@ const result = {
     network_log: paths.networkLog,
     screenshot: paths.screenshot,
     mobile_screenshot: mobileScreenshot,
+    scenario_menu_screenshot: scenarioMenuScreenshot,
     automation_result_json: paths.automationResultJson,
     result_json: paths.resultJson,
   },
@@ -93,10 +98,23 @@ try {
     .getByText(/Event Routing|事件路由|イベントルーティング/)
     .first()
     .waitFor();
+  const addBehavior = page.getByRole("button", {
+    name: /Add behavior|添加行为|動作を追加/,
+  });
+  await addBehavior.waitFor();
+  await addBehavior.click();
+  const messageBehavior = page.getByRole("menuitem", {
+    name: /Reply to messages|回复收到的消息|受信メッセージに返信/,
+  });
+  await messageBehavior.waitFor();
+  await page.waitForTimeout(250);
+  await safeScreenshot(page, scenarioMenuScreenshot);
+  await messageBehavior.click();
   await page
-    .getByRole("button", { name: /Add Route|添加路由|ルートを追加/ })
+    .getByText(/Message received|收到消息|メッセージを受信/)
+    .first()
     .waitFor();
-  result.visible_signals.push("create-mode-routing");
+  result.visible_signals.push("create-mode-routing", "scenario-route-added");
 
   const create = await apiJson(backendUrl, "/api/v1/platform/bots", {
     method: "POST",

skills/skills/langbot-testing/cases/bot-event-routing-product-flow.yaml

@@ -27,7 +27,7 @@ automation_env:
 preconditions:
   - "The target is a local test instance where a temporary HTTP Bot may be created and deleted."
 steps:
-  - "Open Create Bot, choose HTTP Bot, and confirm event routing can be configured before the first save."
+  - "Open Create Bot, choose HTTP Bot, and add a message-reply behavior before the first save."
   - "Create a temporary HTTP Bot with a saved message.received route to the discard processor."
   - "Open the Bot configuration in the WebUI."
   - "Confirm the adapter capability summary, friendly event name, target, and route status are visible."
@@ -36,7 +36,7 @@ steps:
   - "Run the saved runtime route with a synthetic event."
   - "Close the dialog and confirm the route card shows the latest discarded status."
 checks:
-  - "UI: A user can choose a channel and add event routes during initial Bot creation."
+  - "UI: A user can choose a channel and add a scenario-labeled behavior during initial Bot creation."
   - "UI: Event routing uses user-facing labels and does not require the raw event name in the primary route card."
   - "UI: Definite route shadowing and unmatched-event fallback behavior are visible without opening raw logs."
   - "UI: Dry-run visibly reports that the route matched the discard processor."

web/src/app/home/bots/components/bot-form/EventBindingsEditor.tsx

@@ -18,10 +18,15 @@ import {
   GripVertical,
   Info,
   ListChecks,
+  MessageSquare,
   Plus,
   Play,
   RefreshCw,
+  Shield,
   Trash2,
+  UserCheck,
+  UserMinus,
+  UserPlus,
   Workflow,
   XCircle,
 } from 'lucide-react';
@@ -56,6 +61,13 @@ import {
   DialogTitle,
 } from '@/components/ui/dialog';
 import { Alert, AlertDescription } from '@/components/ui/alert';
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu';
 import {
   DndContext,
   DragOverlay,
@@ -145,6 +157,39 @@ const ELEMENTS = [
 // only emit message.received, so that's the sole fallback option.
 const DEFAULT_EVENTS = ['message.received'];
 
+const BEHAVIOR_PRESETS = [
+  {
+    eventType: 'message.received',
+    labelKey: 'bots.behaviorReplyMessages',
+    descriptionKey: 'bots.behaviorReplyMessagesDescription',
+    icon: MessageSquare,
+  },
+  {
+    eventType: 'group.member_joined',
+    labelKey: 'bots.behaviorWelcomeMembers',
+    descriptionKey: 'bots.behaviorWelcomeMembersDescription',
+    icon: UserPlus,
+  },
+  {
+    eventType: 'group.member_left',
+    labelKey: 'bots.behaviorHandleDepartures',
+    descriptionKey: 'bots.behaviorHandleDeparturesDescription',
+    icon: UserMinus,
+  },
+  {
+    eventType: 'friend.request_received',
+    labelKey: 'bots.behaviorReviewFriendRequests',
+    descriptionKey: 'bots.behaviorReviewFriendRequestsDescription',
+    icon: UserCheck,
+  },
+  {
+    eventType: 'group.member_banned',
+    labelKey: 'bots.behaviorHandleModeration',
+    descriptionKey: 'bots.behaviorHandleModerationDescription',
+    icon: Shield,
+  },
+];
+
 // ── helpers ───────────────────────────────────────────────────────────────────
 
 function isMessageEventPattern(p: string) {
@@ -1451,6 +1496,13 @@ export default function EventBindingsEditor({
     () => findCatchAllRouteIndex(bindings),
     [bindings],
   );
+  const behaviorPresets = useMemo(
+    () =>
+      BEHAVIOR_PRESETS.filter((preset) =>
+        dryRunEventOptions.includes(preset.eventType),
+      ),
+    [dryRunEventOptions],
+  );
 
   const refreshRouteStatuses = useCallback(async () => {
     if (!botId) {
@@ -1479,11 +1531,11 @@ export default function EventBindingsEditor({
     form.setValue('event_bindings', next, { shouldDirty: true });
   }
 
-  function addBinding() {
+  function addBinding(eventPattern = 'message.received') {
     updateBindings([
       ...bindings,
       {
-        event_pattern: 'message.received',
+        event_pattern: eventPattern,
         target_type: 'agent',
         target_uuid: '',
         priority: 0,
@@ -1673,10 +1725,48 @@ export default function EventBindingsEditor({
       </DndContext>
 
       <div className="flex flex-wrap gap-2">
-        <Button type="button" variant="outline" size="sm" onClick={addBinding}>
+        <DropdownMenu>
-          <Plus className="h-4 w-4 mr-1" />
+          <DropdownMenuTrigger asChild>
-          {t('bots.addEventBinding')}
+            <Button type="button" variant="outline" size="sm">
-        </Button>
+              <Plus className="h-4 w-4 mr-1" />
+              {t('bots.addBehavior')}
+              <ChevronDown className="ml-1 h-3.5 w-3.5" />
+            </Button>
+          </DropdownMenuTrigger>
+          <DropdownMenuContent align="start" className="w-[300px] max-w-[90vw]">
+            {behaviorPresets.map((preset) => {
+              const Icon = preset.icon;
+              return (
+                <DropdownMenuItem
+                  key={preset.eventType}
+                  className="items-start gap-2 py-2"
+                  onClick={() => addBinding(preset.eventType)}
+                >
+                  <Icon className="mt-0.5 h-4 w-4 shrink-0" />
+                  <span className="flex min-w-0 flex-col gap-0.5">
+                    <span>{t(preset.labelKey)}</span>
+                    <span className="text-xs text-muted-foreground">
+                      {t(preset.descriptionKey)}
+                    </span>
+                  </span>
+                </DropdownMenuItem>
+              );
+            })}
+            <DropdownMenuSeparator />
+            <DropdownMenuItem
+              className="items-start gap-2 py-2"
+              onClick={() => addBinding(dryRunEventOptions[0])}
+            >
+              <Workflow className="mt-0.5 h-4 w-4 shrink-0" />
+              <span className="flex min-w-0 flex-col gap-0.5">
+                <span>{t('bots.behaviorCustom')}</span>
+                <span className="text-xs text-muted-foreground">
+                  {t('bots.behaviorCustomDescription')}
+                </span>
+              </span>
+            </DropdownMenuItem>
+          </DropdownMenuContent>
+        </DropdownMenu>
         <RouteDryRunDialog
           botId={botId}
           bindings={bindings}

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

@@ -367,6 +367,25 @@ const enUS = {
       'Choose which processor handles each event received by this bot. Edit the processing logic on the Agent page. Pipelines only support message events.',
     eventBindings: 'Event Routes',
     addEventBinding: 'Add Route',
+    addBehavior: 'Add behavior',
+    behaviorReplyMessages: 'Reply to messages',
+    behaviorReplyMessagesDescription:
+      'Send incoming messages to an Agent or Pipeline.',
+    behaviorWelcomeMembers: 'Welcome new members',
+    behaviorWelcomeMembersDescription:
+      'Run an Agent when someone joins a group.',
+    behaviorHandleDepartures: 'Handle member departures',
+    behaviorHandleDeparturesDescription:
+      'Run an Agent when someone leaves or is removed.',
+    behaviorReviewFriendRequests: 'Review friend requests',
+    behaviorReviewFriendRequestsDescription:
+      'Let an Agent decide how to handle a new request.',
+    behaviorHandleModeration: 'Handle moderation events',
+    behaviorHandleModerationDescription:
+      'Run an Agent when a group member is restricted.',
+    behaviorCustom: 'Configure another event',
+    behaviorCustomDescription:
+      'Add a route and choose from every event supported by this adapter.',
     eventPattern: 'Event',
     eventPatternPlaceholder: 'Select event',
     targetType: 'Target Type',

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

@@ -373,6 +373,25 @@ const jaJP = {
       'このボットが受信した各イベントをどのプロセッサーに渡すかを選択します。処理ロジックは Agent ページで編集します。Pipeline はメッセージイベントのみ対応します。',
     eventBindings: 'イベントルート',
     addEventBinding: 'ルートを追加',
+    addBehavior: '動作を追加',
+    behaviorReplyMessages: '受信メッセージに返信',
+    behaviorReplyMessagesDescription:
+      '受信メッセージを Agent または Pipeline で処理します。',
+    behaviorWelcomeMembers: '新しいメンバーを歓迎',
+    behaviorWelcomeMembersDescription:
+      'メンバーがグループに参加したときに Agent を実行します。',
+    behaviorHandleDepartures: 'メンバーの退出を処理',
+    behaviorHandleDeparturesDescription:
+      'メンバーが退出または削除されたときに Agent を実行します。',
+    behaviorReviewFriendRequests: '友だち申請を確認',
+    behaviorReviewFriendRequestsDescription:
+      '新しい申請の処理方法を Agent に判断させます。',
+    behaviorHandleModeration: 'モデレーションイベントを処理',
+    behaviorHandleModerationDescription:
+      'グループメンバーが制限されたときに Agent を実行します。',
+    behaviorCustom: '別のイベントを設定',
+    behaviorCustomDescription:
+      'ルートを追加し、このアダプターが対応する全イベントから選択します。',
     eventPattern: 'イベント',
     eventPatternPlaceholder: 'イベントを選択',
     targetType: 'ターゲットタイプ',

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

@@ -352,6 +352,21 @@ const zhHans = {
       '选择此机器人收到不同事件时交给哪个处理器。具体处理逻辑在 Agent 页面编辑，Pipeline 仅支持消息事件。',
     eventBindings: '事件路由',
     addEventBinding: '添加路由',
+    addBehavior: '添加行为',
+    behaviorReplyMessages: '回复收到的消息',
+    behaviorReplyMessagesDescription:
+      '把收到的消息交给 Agent 或 Pipeline 处理。',
+    behaviorWelcomeMembers: '欢迎新成员',
+    behaviorWelcomeMembersDescription: '有人加入群组时运行 Agent。',
+    behaviorHandleDepartures: '处理成员离群',
+    behaviorHandleDeparturesDescription: '有人离开或被移出群组时运行 Agent。',
+    behaviorReviewFriendRequests: '审核好友请求',
+    behaviorReviewFriendRequestsDescription:
+      '让 Agent 决定如何处理新的好友请求。',
+    behaviorHandleModeration: '处理群管理事件',
+    behaviorHandleModerationDescription: '群成员受到限制时运行 Agent。',
+    behaviorCustom: '配置其他事件',
+    behaviorCustomDescription: '添加路由，并从此适配器支持的全部事件中选择。',
     eventPattern: '事件',
     eventPatternPlaceholder: '选择事件',
     targetType: '目标类型',