Recipe add function

Recipe: Add a Function

1. Find the target file by purpose: grep -in '<topic>' readmenator-agent/INDEX*.md
2. Reuse before writing: grep -in '<verb or noun>' readmenator-agent/SYMBOLS*.md
3. Read the subsystem context: cat readmenator-agent/KB_<subsystem>.md
4. Check dependencies: grep -n '<filename>' readmenator-agent/ARCHITECTURE*.md
5. Edit the file
6. Regenerate: readmenator .