adding back the text for tool use

Author: dileepyavan

src/extension/prompts/node/agent/openai/gpt51CodexPrompt.tsx

@@ -48,7 +48,9 @@ class Gpt51CodexPrompt extends PromptElement<DefaultAgentPromptProps> {
 				- Do not try to parallelize using scripting or anything else than `multi_tool_use.parallel`.<br />
 			</Tag>
 			<Tag name='tool_use'>
-				- {tools[ToolName.CoreManageTodoList] && <>
+				- You have access to many tools. If a tool exists to perform a specific task, you MUST use that tool instead of running a terminal command to perform that task.<br />
+				{tools[ToolName.CoreRunTest] && <>- Use the {ToolName.CoreRunTest} tool to run tests instead of running terminal commands.<br /></>}
+				{tools[ToolName.CoreManageTodoList] && <>
 					<br />
 					## {ToolName.CoreManageTodoList} tool<br />
 					<br />