feat: Add initial core game scene, player script, and static Tekton manager.

scenes/main.gd

@@ -528,6 +528,9 @@ func _setup_host_game():
 		stop_n_go_manager._setup_arena()
 	elif LobbyManager.game_mode == "Tekton Doors" and portal_mode_manager:
 		portal_mode_manager.setup_arena_locally()
+	else:
+		# Randomize grid first to ensure Floor 0 is walkable for pre-calculation
+		randomize_game_grid()
 		
 	# 1. PVT: Pre-calculate Static Tekton positions AFTER arena size is known
 	_precalculate_static_positions()
@@ -725,7 +728,6 @@ func _start_game():
 		# Spawn Static Tektons and random tiles BEFORE countdown (Free Mode Only)
 		# Exclude for Stop n Go and Tekton Doors
 		if LobbyManager.game_mode != "Stop n Go" and LobbyManager.game_mode != "Tekton Doors":
-			randomize_game_grid()
 			spawn_static_tektons()
 			
 		# Tekton Doors: Randomize connections BEFORE countdown so colors show

scenes/player.gd

@@ -1217,6 +1217,14 @@ func is_position_occupied(pos: Vector2i) -> bool:
 		if p.is_player_moving and p.target_position == pos:
 			return true
 			
+	# Prevent overlap with Static Tekton Stands (3x3 area)
+	if enhanced_gridmap:
+		for stand in get_tree().get_nodes_in_group("StaticTektonStands"):
+			var local_pos = enhanced_gridmap.to_local(stand.global_position)
+			var stand_map_pos = enhanced_gridmap.local_to_map(local_pos)
+			if abs(pos.x - stand_map_pos.x) <= 1 and abs(pos.y - stand_map_pos.z) <= 1:
+				return true
+				
 	return false
 
 func find_valid_starting_position() -> Vector2i:

scripts/managers/static_tekton_manager.gd

@@ -42,9 +42,9 @@ func calculate_spawn_points(count: int, gridmap: Node) -> Array[Vector2i]:
 	# If count > 5, we only return 5 because that's the max safe non-adjacent set in 3x3
 	var spawn_points: Array[Vector2i] = []
 	
-	var iterations = min(count, target_indices.size())
-	for i in range(iterations):
-		var zone_idx = target_indices[i]
+	for zone_idx in target_indices:
+		if spawn_points.size() >= count:
+			break
 		var zone = zones[zone_idx]
 		
 		# Determine Position Type for Bias