fix rusenie hier ked vsetkych odpoji

api/__init__.py

@@ -1,3 +1,4 @@
+import asyncio
 import hmac
 import json
 import os
@@ -273,19 +274,37 @@ async def send_error(sid: str, message: str):
     await sio.emit("error", {"error": message}, to=sid)
 
 
+# Ako dlho prezije nezacata hra, ked su vsetci hraci naraz offline. Na mobile
+# sa socket bezne strati uz pri zamknuti obrazovky, takze okamzite zmazanie
+# hry rusilo lobby, v ktorom hraci len cakali so zhasnutym telefonom.
+LOBBY_ABANDON_GRACE_SECONDS = 10 * 60
+
+
+async def _cleanup_abandoned_lobby(gid: str):
+    """Po grace periode zmaz nezacatu hru, ak sa medzitym nikto nevratil.
+    Podmienka sa overuje az po uplynuti casu, takze pri navrate hraca je
+    task neskodny no-op (netreba nic rusit)."""
+    await asyncio.sleep(LOBBY_ABANDON_GRACE_SECONDS)
+    game = games.get(gid)
+    if game is not None and not game.started and not any(p.connected for p in game.players):
+        del games[gid]
+        await broadcast_lobby()
+
+
 async def _mark_player_offline(game: "Game", player: "Player"):
-    """Mark player disconnected. An unstarted game with nobody left is cleaned
-    up; a started game is kept in memory so it stays in the lobby and can be
-    resumed (it's torn down only by end_game)."""
+    """Mark player disconnected. An unstarted game with nobody left gets a
+    delayed cleanup (mobile sockets drop on screen lock, so an immediate
+    delete would kill lobbies where everyone is just waiting); a started game
+    is kept in memory so it stays in the lobby and can be resumed (it's torn
+    down only by end_game)."""
     player.connected = False
     if not any(p.connected for p in game.players) and not game.started:
-        del games[game.gid]
-    else:
-        await sio.emit(
-            "player_connection",
-            {"order": player.order, "connected": False},
-            room=game.gid,
-        )
+        asyncio.create_task(_cleanup_abandoned_lobby(game.gid))
+    await sio.emit(
+        "player_connection",
+        {"order": player.order, "connected": False},
+        room=game.gid,
+    )
 
 
 def _active_game(sid: str) -> "tuple[Game, dict] | None":