Statistics with a chart at the end of a game, 64 achievements kept locally and on the server

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/siege.rs

@@ -48,6 +48,7 @@ impl Game {
             return;
         }
         self.gold -= gold;
+        self.count(crate::stats::SIEGE, 1.0);
         let id = self.spawn(kind, false, x as f32 + 0.5, y as f32 + 0.5, 1);
         if let Some(e) = self.ents.iter_mut().find(|e| e.id == id) {
             e.side = self.me_side;