feat: Implement initial main scene, player scripts, and core game manager systems for input, actions, playerboard, special tiles, and UI.

scripts/managers/special_tiles_manager.gd

@@ -64,10 +64,6 @@ func execute_targeted_effect(effect: int, target_pos: Vector2i):
 	if player.is_multiplayer_authority():
 		player.rpc("trigger_screen_shake", "light")
 		# Also reset action loop? (ONLY for human players)
-		if not (player.is_bot or player.is_in_group("Bots")):
-			var main = player.get_tree().get_root().get_node_or_null("Main")
-			if main and main.ui_manager:
-				main.ui_manager.current_action_state = main.ui_manager.ActionState.NONE
 
 # Random shape patterns for 3x3 area (relative offsets from center)