add: article link prepend

prepends/article_link.typ

@@ -0,0 +1,20 @@
+#let article_link(path) = {
+  let file-path = path + "index.typ"
+
+  let content = read(file-path)
+
+  let title = none
+  for line in content.split("\n") {
+    let trimmed = line.trim()
+    if trimmed.starts-with("= ") {
+      title = trimmed.slice(2).trim()
+      break
+    }
+  }
+
+  if title == none {
+    panic("No level-1 heading found in " + file-path)
+  }
+
+  link(path)[#title]
+}