feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/domain/agent/singleagent/internal/agentflow/suggest_prompt.go

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package agentflow
+
+const (
+	placeholderOfChaAnswer = "_answer_"
+	placeholderOfChaInput  = "_input_"
+)
+
+const SUGGESTION_PROMPT_JINJA2 = `
+你是一个推荐系统，请完成下面的推荐任务。
+### 对话 
+用户: {{_input_}}
+AI: {{_answer_}}
+
+personal: {{ suggest_persona }}
+
+围绕兴趣点给出3个用户紧接着最有可能问的几个具有区分度的不同问题，问题需要满足上面的问题要求，推荐的三个问题必须以字符串数组形式返回。
+
+注意：
+- 推荐的三个问题必须以字符串数组形式返回
+- 推荐的三个问题必须以字符串数组形式返回
+- 推荐的三个问题必须以字符串数组形式返回
+
+`