feat: Introduce an EnhancedGridMap with advanced grid generation, randomization, and data serialization features, along with a default MeshLibrary and a new main scene script.

scenes/main.gd

@@ -463,6 +463,10 @@ func _setup_client_game():
 	# Wait shorter time for host to be ready, then request full sync to correct positions/state
 	await get_tree().create_timer(1.0).timeout
 	rpc_id(1, "request_full_player_sync", my_id)
+	
+	# Only request grid if we remain connected
+	if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+		rpc_id(1, "request_full_grid_sync")
 
 func _auto_start_from_lobby():
 	"""Called when main.tscn is loaded from lobby - game is already connected."""
@@ -1032,6 +1036,32 @@ func randomize_game_grid():
 		# For now, let's assume server authority + sync on connect handles it, or add sync loop if critical.
 		pass
 
+@rpc("any_peer")
+func request_full_grid_sync():
+	if multiplayer.is_server():
+		var sender_id = multiplayer.get_remote_sender_id()
+		print("[Main] Grid sync requested by %d" % sender_id)
+		var enhanced_gridmap = $EnhancedGridMap
+		if enhanced_gridmap:
+			var grid_data = enhanced_gridmap.get_floor_data(1) # Sync Floor 1 (Items)
+			print("[Main] Server: Prepared grid data. Size: %d. Sending to %d..." % [grid_data.size(), sender_id])
+			
+			# Force send (Server is usually always connected)
+			rpc_id(sender_id, "sync_full_grid_data", grid_data)
+			print("[Main] Server: Sent rpc_id to %d" % sender_id)
+
+@rpc("authority", "call_local", "reliable")
+func sync_full_grid_data(data: PackedInt32Array):
+	print("[Main] sync_full_grid_data received. Items: %d" % (data.size() / 3))
+	var enhanced_gridmap = $EnhancedGridMap
+	if not enhanced_gridmap: 
+		print("[Main] Error: EnhancedGridMap not found!")
+		return
+	
+	# Apply the synced data to Floor 1
+	enhanced_gridmap.set_floor_data(1, data)
+	print("[Main] Grid sync complete.")
+
 
 # =============================================================================
 # Goals Cycle & Leaderboard UI