feat: refactored docs structure

docs/progress.mdx

@@ -0,0 +1,15 @@
+---
+title: Progress
+description: Live campaign progress — solved by difficulty, recent attempts, the year by difficulty, topic coverage, and the most recently solved problems, fetched from the SRS Worker.
+icon: loader
+---
+
+<div className="not-prose flex flex-col gap-6">
+  <SolvedRing />
+  <div className="grid gap-6 md:grid-cols-2">
+    <SubmissionHeatmap />
+    <SubmissionChart />
+  </div>
+  <TopicBubbles />
+  <RecentSolves />
+</div>