feat: Implement the new Stop N Go game mode with dedicated managers, models, and UI.

scripts/managers/camera_context_manager.gd

@@ -70,6 +70,8 @@ func _update_camera_target():
 	
 	if LobbyManager.game_mode == "Stop n Go":
 		_update_stop_n_go_camera(current_row, current_col)
+	elif LobbyManager.game_mode == "Tekton Doors":
+		_update_tekton_doors_camera()
 	else:
 		_update_freemode_camera(current_row, current_col)
 
@@ -122,6 +124,12 @@ func _update_stop_n_go_camera(current_row: int, current_col: int):
 
 	_apply_camera_tween(Vector3(target_x, target_y, target_z))
 
+func _update_tekton_doors_camera():
+	# --- TEKTON DOORS: Static Overlook ---
+	# Grid is 14x14, center is approx (7, 7)
+	# User requested position: Vector3(7.0, 31.0, 25.5)
+	_apply_camera_tween(Vector3(7.0, 32.3, 25.8))
+
 func _update_freemode_camera(current_row: int, current_col: int):
 	# --- FREEMODE: 3x3 Grid ---
 	# Zone thresholds 4, 9

scripts/managers/player_input_manager.gd

@@ -90,22 +90,22 @@ func handle_unhandled_input(event):
 	if event is InputEventKey and event.pressed and not event.echo:
 		match event.keycode:
 			KEY_KP_1, KEY_1, KEY_KP_2, KEY_2, KEY_KP_3, KEY_3, KEY_KP_4, KEY_4:
-				var is_sng = LobbyManager.game_mode == "Stop n Go"
+				var is_restricted = LobbyManager.game_mode == "Stop n Go" or LobbyManager.game_mode == "Tekton Doors"
 				match event.keycode:
 					KEY_KP_1, KEY_1:
 						player.activate_powerup(0) # FASTER_SPEED
 					KEY_KP_2, KEY_2:
-						if is_sng:
-							player.activate_powerup(1) # AREA_FREEZE (StopNGo)
+						if is_restricted:
+							player.activate_powerup(1) # AREA_FREEZE (Restricted)
 						else:
 							player.activate_powerup(2) # BLOCK_FLOOR (Free)
 					KEY_KP_3, KEY_3:
-						if is_sng:
-							player.activate_powerup(3) # INVISIBLE_MODE (StopNGo)
+						if is_restricted:
+							player.activate_powerup(3) # INVISIBLE_MODE (Restricted)
 						else:
 							player.activate_powerup(1) # AREA_FREEZE (Free)
 					KEY_KP_4, KEY_4:
-						if not is_sng:
+						if not is_restricted:
 							player.activate_powerup(3) # INVISIBLE_MODE (Free)
 			# KEY_R:
 			# 	player.auto_put_item()

scripts/managers/special_tiles_manager.gd

@@ -461,8 +461,9 @@ func spawn_powerups_around(center: Vector2i, force_powerups: bool = true):
 				if rng.randf() < 0.7:
 					item_id = rng.randi_range(7, 10)
 				else:
-					# 30% Chance for PowerUp (Exclude Wall 13 only in Stop n Go)
-					if LobbyManager.game_mode == "Stop n Go":
+					# 30% Chance for PowerUp (Speed 11, Freeze 12, Ghost 14 - Exclude Wall 13 in restricted modes)
+					var is_restricted = LobbyManager.game_mode == "Stop n Go" or LobbyManager.game_mode == "Tekton Doors"
+					if is_restricted:
 						item_id = [11, 12, 14].pick_random()
 					else:
 						item_id = rng.randi_range(11, 14)

scripts/managers/stop_n_go_manager.gd

@@ -11,7 +11,7 @@ enum Phase {GO, STOP}
 
 const GO_DURATION: float = 8.0
 const STOP_DURATION: float = 4.0
-const REQUIRED_GOALS: int = 1
+const REQUIRED_GOALS: int = 8
 
 var current_phase: Phase = Phase.GO
 var phase_timer: float = GO_DURATION