Phase 3 - local book stats

src/activities/settings/ReadingStatsBookDetailActivity.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <string>
+
+#include "activities/Activity.h"
+
+// Phase-2 sub-screen: per-book reading stats with a 30-day sparkline keyed on
+// that book's own day buckets. Constructed with the docId of the book to
+// display; resolved against ReadingStatsStore on each render so a session
+// that finishes while this screen is open updates the next time we redraw.
+class ReadingStatsBookDetailActivity final : public Activity {
+ public:
+  ReadingStatsBookDetailActivity(GfxRenderer& renderer, MappedInputManager& mappedInput, std::string docId)
+      : Activity("ReadingStatsBookDetail", renderer, mappedInput), docId(std::move(docId)) {}
+
+  void onEnter() override;
+  void loop() override;
+  void render(RenderLock&&) override;
+
+ private:
+  std::string docId;
+};