fix: Hex Wars - getGameForUser crash bei alten Spielen und finished-Branch

backend/src/tools/gebietseroberung/routes.js

@@ -173,7 +173,13 @@ function getGameForUser(id, requesterId) {
   const myScore  = requesterId === game.owner_id ? ownerScore : oppScore;
   const oppSc    = requesterId === game.owner_id ? oppScore   : ownerScore;
 
-  if (!terrain.length) return { ...game, myScore:0, oppScore:0 };
+  const myHead  = requesterId === game.owner_id ? game.owner_head : game.opp_head;
+  const oppHead = requesterId === game.owner_id ? game.opp_head  : game.owner_head;
+
+  // Altes Spiel ohne Terrain: direkt zurückgeben, kein Fog
+  if (!terrain.length) {
+    return { ...game, myScore:0, oppScore:0, myHead, oppHead };
+  }
 
   // Bei beendetem Spiel: vollständiges Grid ohne Fog
   let maskedGrid, maskedTerrain;
@@ -186,15 +192,10 @@ function getGameForUser(id, requesterId) {
     maskedTerrain = terrain.map((row,r) => row.map((cell,c) => visible[r][c] ? cell : -1));
   }
 
-  // Kopf des anfragenden Spielers mitliefern (für Frontend-Validierung)
-  const myHead  = requesterId === game.owner_id ? game.owner_head : game.opp_head;
-  const oppHead = requesterId === game.owner_id ? game.opp_head  : game.owner_head;
-
   return {
     ...game,
     grid:    JSON.stringify(maskedGrid),
     terrain: JSON.stringify(maskedTerrain),
-    fog:     JSON.stringify(visible),
     myScore,
     oppScore: oppSc,
     myHead,