Update chat template

chat_template.jinja

@@ -60,6 +60,16 @@
     {%- endif -%}
 {%- endfor -%}
 
+{%- if tools -%}
+    {%- set anchor_ns = namespace(found=false) -%}
+    {%- for m in mns.list -%}
+        {%- if m.role == "system" or m.role == "developer" -%}{%- set anchor_ns.found = true -%}{%- endif -%}
+    {%- endfor -%}
+    {%- if not anchor_ns.found -%}
+        {%- set mns.list = [{"role": "system", "content": ""}] + mns.list -%}
+    {%- endif -%}
+{%- endif -%}
+
 {%- set lu = namespace(idx=-1) -%}
 {%- for m in mns.list -%}
     {%- if m.role == "user" or m.role == "developer" -%}