Give explicit instructions on reading and updating anchor comemnts

.cursor/rules/alexandria.mdc

@@ -54,6 +54,8 @@ NEVER assume developer intent. If you are unsure about something, ALWAYS stop an
 
 ### General Guidance
 
+- Before writing any code, ALWAYS search the codebase for relevant anchor comments.
+- Whenever updating code, ALWAYS update relevant anchor comments.
 - Prefer to use Deno to manage dependencies, build the project, and run tests.
 - Use snake_case names for plain TypeScript files.
 - Use comments sparingly; aim to make code readable and self-documenting.