chore: remove stale TODO in stats.rs (ReminderRollup RPC already implemented)

hive-ag3nt/src/stats.rs

@@ -275,7 +275,7 @@ fn snapshot(path: &Path, window: Window) -> Result<Snapshot> {
         result_mix: top_n(result_totals, 20),
         models,
         duration_summary,
-        reminder_stats: None, // TODO: fetch via ReminderRollup RPC
+        reminder_stats: None, // filled in by api_stats in web_ui.rs via fetch_reminder_stats RPC
     })
 }