feat: reply editor follow-up (#13106)

Co-authored-by: aakashb95 <aakashbakhle@gmail.com>

app/javascript/dashboard/api/captain/tasks.js

@@ -108,6 +108,27 @@ class TasksAPI extends ApiClient {
       { signal }
     );
   }
+
+  /**
+   * Sends a follow-up message to continue refining a previous task result.
+   * @param {Object} options - The follow-up options.
+   * @param {Object} options.followUpContext - The follow-up context from a previous task.
+   * @param {string} options.message - The follow-up message/request from the user.
+   * @param {string} [options.conversationId] - The conversation ID for Langfuse session tracking.
+   * @param {AbortSignal} [signal] - AbortSignal to cancel the request.
+   * @returns {Promise} A promise that resolves with the follow-up response and updated follow-up context.
+   */
+  followUp({ followUpContext, message, conversationId }, signal) {
+    return axios.post(
+      `${this.url}/follow_up`,
+      {
+        follow_up_context: followUpContext,
+        message,
+        conversation_display_id: conversationId,
+      },
+      { signal }
+    );
+  }
 }
 
 export default new TasksAPI();