diff --git a/src/gateway/agent_md_template.md b/src/gateway/agent_md_template.md
index e69de29..cae1413 100644
--- a/src/gateway/agent_md_template.md
+++ b/src/gateway/agent_md_template.md
@@ -0,0 +1,6 @@
+<!-- # 自定义 Agent 配置 -->
+<!--
+在此处添加你的自定义指令。
+此文件的内容将注入到 agent 的 system prompt 中。
+支持 Markdown 语法。
+-->
diff --git a/src/providers/openai.rs b/src/providers/openai.rs
index a066d8b..e411aa4 100644
--- a/src/providers/openai.rs
+++ b/src/providers/openai.rs
@@ -3,6 +3,7 @@ use futures_util::StreamExt;
 use reqwest::Client;
 use serde::Deserialize;
 use serde_json::{Value, json};
+use std::collections::BTreeMap;
 use std::collections::HashMap;
 use std::time::Duration;
 
@@ -25,7 +26,7 @@ struct StreamingToolCall {
 struct StreamingAccumulator {
     content: String,
     reasoning_content: Option<String>,
-    tool_calls: HashMap<usize, StreamingToolCall>,
+    tool_calls: BTreeMap<usize, StreamingToolCall>,
     response_id: String,
 }
 
diff --git a/src/skills/mod.rs b/src/skills/mod.rs
index ef1e57a..2d7ddaa 100644
--- a/src/skills/mod.rs
+++ b/src/skills/mod.rs
@@ -1232,6 +1232,7 @@ mod tests {
                 SkillSource::Project,
                 SkillSource::ProjectAgent,
                 SkillSource::ProjectOpenclaw,
+                SkillSource::Custom("unknown".to_string()),
             ]
         );
     }