ops: add toc on side

site/calepin.toml

@@ -22,6 +22,11 @@ include = [
 ]
 exclude = ["drafts/**"]
 
+[toc]
+enabled = true
+depth = 2
+floating = true
+
 [menus]
 main = [
     { label = "Home", target = "home/index.typ" },