Update app.js

app.js

@@ -1008,6 +1008,7 @@ STRICT REQUIREMENTS:
 8. Include at least one multi-scope (hierarchical) AXL program per batch.
 9. Include at least one search/iterative problem using STEP and CANDIDATE.
 10. Do NOT repeat domains recently used: {recent_domains}
+11. The axl_source should be as expressive as it can be. 
 
 JSON SCHEMA (output an array of these):
 {