Unify pod steering on lateral X tilt for flat and frontal holds.

Replace facing-only roll detection with atan2(x, yz) so left/right works in both orientations without a face gate.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/space_shooter.gd

@@ -250,7 +250,7 @@ func _on_client_selection_changed(_idx: int) -> void:
 		setup_hint_label.text = "Links und rechts müssen verschiedene Pods sein."
 	else:
 		setup_hint_label.text = (
-			"Pod #%d links · Pod #%d rechts · frontal halten, Lenkrad drehen"
+			"Pod #%d links · Pod #%d rechts · kippen oder Lenkrad drehen"
 			% [_left_client_id, _right_client_id]
 		)
 
@@ -284,7 +284,7 @@ func _begin_playing() -> void:
 	_enable_both_streams()
 	_update_score_labels()
 	status_label.text = (
-		"Pod frontal halten · wie Lenkrad drehen  ·  Tap = Boost (%ds)"
+		"Pod halten · links/rechts kippen oder Lenkrad  ·  Tap = Boost (%ds)"
 		% int(BOOST_DURATION_SEC)
 	)
 
@@ -694,10 +694,9 @@ func _update_stars(delta: float) -> void:
 
 
 func _effective_accel(side: int) -> float:
-	# Frontal halten, Lenkrad-Roll: links positiv → Schiff nach links (negativ).
+	# Lateral +X → Schiff nach rechts (flach kippen und frontal Lenkrad).
 	var a := _accel_for_side(side)
-	var roll := OrientationGizmo.steer_roll(Vector3(a))
-	return -roll * STEER_GAIN
+	return OrientationGizmo.steer_roll(Vector3(a)) * STEER_GAIN
 
 
 func _velocity_scale(side: int) -> float:
@@ -734,7 +733,7 @@ func _update_connection_status() -> void:
 			match _socket.get_ready_state():
 				WebSocketPeer.STATE_OPEN:
 					status_label.text = (
-						"Frontal halten · Lenkrad drehen  ·  Tap = Boost (%ds) · ♥×%d · CD %ds"
+						"Kippen / Lenkrad  ·  Tap = Boost (%ds) · ♥×%d · CD %ds"
 						% [int(BOOST_DURATION_SEC), MAX_LIVES, int(BOOST_COOLDOWN_SEC)]
 					)
 				WebSocketPeer.STATE_CONNECTING: