feat: expand instructions to ensure unique selectors are used

src/prompt.ts

@@ -9,7 +9,8 @@ import { TaskMessage } from "./types";
 export const prompt = (message: TaskMessage) => {
   return `This is your task: ${message.task}
 
-* Must always use locateElement function to find the element and reference it by elementId.
+* When creating CSS selectors, ensure they are unique and specific enough to select only one element, even if there are multiple elements of the same type (like multiple h1 elements).
+* Avoid using generic tags like 'h1' alone. Instead, combine them with other attributes or structural relationships to form a unique selector.
 
 Webpage snapshot: