fix(lobby): restore mobile scrolling outside matches

web/player.css

@@ -252,8 +252,9 @@ input:focus { border-color: var(--aqua); box-shadow: 0 0 0 3px #43ead229; }
 
 @media (max-width: 720px) {
   :root { --cell: 46px; }
-  html, body { height: 100%; overflow: hidden; }
-  #app { height: 100dvh; min-height: 0; overflow: hidden; padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left)); }
+  body.match-active { height: 100%; overflow: hidden; }
+  #app { padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left)); }
+  body.match-active #app { height: 100dvh; min-height: 0; overflow: hidden; }
   .welcome-screen { grid-template-columns: 1fr; padding: 28px 2px; }
   .hero-art { display: none; }
   .welcome-panel { padding: 22px 18px; }

web/player.js

@@ -417,6 +417,7 @@
       byId("lobby-screen").hidden = name !== "lobby";
       byId("match-screen").hidden = name !== "match";
       byId("observer-screen").hidden = name !== "observer";
+      documentObject.body.classList.toggle("match-active", name === "match");
     }
 
     function renderWelcomeHeadline(headline) {
@@ -661,10 +662,7 @@
       }
       if (snapshot.phase === "paused") { resetPlayerControls(); showModal("Пауза", "Один герой потерялся между Wi‑Fi пакетами. Ждём возвращения.", "ПЕРЕРЫВ", false); }
       else if (snapshot.phase === "finished" || snapshot.result && snapshot.result !== "none") renderResult(snapshot.result);
-      else {
-        hideModal();
-        if (!state.onboardingSeen) showOnboarding(0);
-      }
+      else hideModal();
     }
 
     function applyObserverTransform() {