feat: Add initial main scene with grid map, UI, touch controls, and core game logic scripts.

scripts/static_tekton_stand.gd

@@ -32,8 +32,7 @@ func _update_mesh_from_index():
 	
 	var shapes = [
 		_create_cylinder(),
-		_create_box(),
-		_create_sphere()
+		_create_box()
 	]
 	
 	var idx = shape_index % shapes.size()

scripts/tekton.gd

@@ -42,7 +42,12 @@ func update_visual_position():
 		
 	# Side offset: place it near the edge
 	# Using NW corner (+0.2, +0.2) instead of center (+0.5, +0.5)
-	position = Vector3(current_position.x + 0.2, floor_y, current_position.y + 0.2)
+	var offset = 0.2
+	if is_static_turret:
+		offset = 0.5
+		floor_y = 0.6
+		
+	position = Vector3(current_position.x + offset, floor_y, current_position.y + offset)
 
 func move_to(target_pos: Vector2i):
 	if is_moving or is_carried or is_thrown: return