refactor(*): Restructure game into reusable Arena/GameMode architecture with controller-driven ships, adding Free Play and Match modes

Game/scripts/player_ship_controller.gd

@@ -0,0 +1,49 @@
+class_name PlayerShipController
+extends ShipController
+
+# Drives a Ship from the local player's input actions (see project.godot
+# [input] and FLIGHT_MANUAL.md).
+
+
+func get_action() -> ShipAction:
+	var action := ShipAction.new()
+
+	# Forward/Backward thrust (main engines)
+	if Input.is_action_pressed("move_forward"):
+		action.thrust.z += 1.0
+	if Input.is_action_pressed("move_back"):
+		action.thrust.z -= 1.0
+
+	# Strafe thrusters (left/right)
+	if Input.is_action_pressed("move_left"):
+		action.thrust.x -= 1.0
+	if Input.is_action_pressed("move_right"):
+		action.thrust.x += 1.0
+
+	# Vertical thrusters (up/down)
+	if Input.is_action_pressed("move_up"):
+		action.thrust.y += 1.0
+	if Input.is_action_pressed("move_down"):
+		action.thrust.y -= 1.0
+
+	# Yaw (turn left/right around Y axis)
+	if Input.is_action_pressed("turn_left"):
+		action.rotation.y += 1.0
+	if Input.is_action_pressed("turn_right"):
+		action.rotation.y -= 1.0
+
+	# Pitch (nose up/down around X axis)
+	if Input.is_action_pressed("pitch_up"):
+		action.rotation.x -= 1.0
+	if Input.is_action_pressed("pitch_down"):
+		action.rotation.x += 1.0
+
+	# Roll (bank left/right around Z axis)
+	if Input.is_action_pressed("roll_left"):
+		action.rotation.z += 1.0
+	if Input.is_action_pressed("roll_right"):
+		action.rotation.z -= 1.0
+
+	action.turbo = Input.is_action_pressed("turbo")
+
+	return action