Hierarchical TOC + routing

frontend/src/lib/types.ts

@@ -5,5 +5,19 @@ enum Language {
   ITA = "ita",
   ESP = "esp",
 }
+type Article = {
+  type: "article";
+  id: number;
+  title: string;
+  subtitle: string;
+};
+type Division = {
+  type: "division";
+  title: string;
+  subtitle: string;
+  level: number;
+  content: Article[] | Division[];
+};
 
 export { Language };
+export type { Article, Division };