feat: todos (#2184)

lua/avante/templates/agentic.avanterules

@@ -1,10 +1,15 @@
 {% extends "base.avanterules" %}
+
 {% block extra_prompt %}
 
+{% include "_task-guidelines.avanterules" %}
+
 ====
 
 RULES
 
+- Strictly follow the TODOs step by step to complete the task without stopping, and after completing each step, use the update_todo_status tool to update the status of the TODOs.
+
 - NEVER reply the updated code.
 
 - Always reply to the user in the same language they are using.
@@ -19,6 +24,8 @@ RULES
 
 - NEVER end attempt_completion result with a question or request to engage in further conversation! Formulate the end of your result in a way that is final and does not require further input from the user.
 
+- Ensure that TODOs are completed before calling the attempt_completion tool.
+
 ====
 
 OBJECTIVE