Fix code width to 80

And verify with a ruler

_common.R

@@ -16,7 +16,8 @@ options(
   stringr.view_n = 10,
   # Activate crayon output - temporarily disabled for quarto
   # crayon.enabled = TRUE,
-  pillar.bold = TRUE
+  pillar.bold = TRUE,
+  width = 80
 )
 
 ggplot2::theme_set(ggplot2::theme_gray(12))

intro.qmd

@@ -341,4 +341,5 @@ This book was built with:
 
 ```{r}
 sessioninfo::session_info(c("tidyverse"))
+cli:::ruler()
 ```