Merge pull request #416 from znygugeyx-ctrl/feat/subagent-fork-render

feat: 参考 claude code 官方实现，改进 sub agent 以及 fork agent 的渲染方式

src/components/messages/UserTextMessage.tsx

@@ -4,6 +4,7 @@ import * as React from 'react';
 import { NO_CONTENT_MESSAGE } from '../../constants/messages.js';
 import {
   COMMAND_MESSAGE_TAG,
+  FORK_BOILERPLATE_TAG,
   LOCAL_COMMAND_CAVEAT_TAG,
   TASK_NOTIFICATION_TAG,
   TEAMMATE_MESSAGE_TAG,
@@ -124,16 +125,21 @@ export function UserTextMessage({
   }
 
   // Fork child's first message: collapse the rules/format boilerplate, show
-  // only the directive. FORK_BOILERPLATE_TAG is inlined so the import doesn't
-  // ship in external builds where feature('FORK_SUBAGENT') is false.
-  if (feature('FORK_SUBAGENT')) {
-    if (param.text.includes('<fork-boilerplate>')) {
-      /* eslint-disable @typescript-eslint/no-require-imports */
-      const { UserForkBoilerplateMessage } =
-        require('./UserForkBoilerplateMessage.js') as typeof import('./UserForkBoilerplateMessage.js');
-      /* eslint-enable @typescript-eslint/no-require-imports */
-      return <UserForkBoilerplateMessage addMargin={addMargin} param={param} />;
-    }
+  // only the user prompt. Independent of FORK_SUBAGENT flag — the fork agent
+  // transcript always needs to render the prompt as a normal user bubble.
+  if (param.text.includes(`<${FORK_BOILERPLATE_TAG}>`)) {
+    /* eslint-disable @typescript-eslint/no-require-imports */
+    const { UserForkBoilerplateMessage } =
+      require('./UserForkBoilerplateMessage.js') as typeof import('./UserForkBoilerplateMessage.js');
+    /* eslint-enable @typescript-eslint/no-require-imports */
+    return (
+      <UserForkBoilerplateMessage
+        addMargin={addMargin}
+        param={param}
+        isTranscriptMode={isTranscriptMode}
+        timestamp={timestamp}
+      />
+    );
   }
 
   // Cross-session UDS message (from another Claude session's SendMessage).