docs: restructure problem paths, change section display to groups, and improve documentation content

apps/docs/content/(04-relational)/graph-bfs/meta.ts

@@ -1,3 +1,3 @@
 import { defineMeta } from "blume";
 
-export default defineMeta({ title: "Graph BFS", order: 17, icon: "radar", display: "page" });
+export default defineMeta({ title: "Graph BFS", order: 17, icon: "radar", display: "group" });

apps/docs/content/(04-relational)/graph-dfs/meta.ts

@@ -1,3 +1,3 @@
 import { defineMeta } from "blume";
 
-export default defineMeta({ title: "Graph DFS", order: 16, icon: "waypoints", display: "page" });
+export default defineMeta({ title: "Graph DFS", order: 16, icon: "waypoints", display: "group" });

apps/docs/content/(04-relational)/topological-sort/meta.ts

@@ -1,3 +1,3 @@
 import { defineMeta } from "blume";
 
-export default defineMeta({ title: "Topological Sort", order: 18, icon: "workflow", display: "page" });
+export default defineMeta({ title: "Topological Sort", order: 18, icon: "workflow", display: "group" });

apps/docs/content/(04-relational)/union-find/meta.ts

@@ -1,3 +1,3 @@
 import { defineMeta } from "blume";
 
-export default defineMeta({ title: "Union-Find", order: 19, icon: "merge", display: "page" });
+export default defineMeta({ title: "Union-Find", order: 19, icon: "merge", display: "group" });