Stop as soon as materials run out

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

game.py

@@ -2040,6 +2040,13 @@ def process_player(world: dict, player: dict, now: float, rng: random.Random | N
                     summary["resumed"] = back
                 else:
                     stop(player)
+        if player["action"] is current and "enemy" not in action and not current.get("plot2"):
+            # Out of materials: stop now, not once the next bar has filled.
+            reason = can_start(world, player, growing(player))
+            if reason:
+                stop(player, reason)
+                summary["stopped"] = reason
+                break
     if player["action"] and limit < now and current["start"] < now:
         current["start"] = now
     return summary