feat: implement weapon framework, hitscan logic, and player movement controller with state management

movement/player_movement_controller.gd

@@ -146,9 +146,9 @@ func apply_impulse(force: Vector3) -> void:
 		# Tiny upward bump helps move_and_slide detach from the floor
 		global_position.y += 0.1
 
-func take_damage(amount: float, hit_pos: Vector3, source: Node = null) -> void:
+func take_damage(amount: float, _hit_pos: Vector3, _source: Node3D = null) -> void:
 	# Show damage number for self-damage
-	spawn_damage_number(amount, hit_pos)
+	spawn_damage_number(amount, _hit_pos)
 
 func _ensure_machine() -> MovementStateMachine:
 	if is_instance_valid(_machine):

movement/states/state_wall_run.gd

@@ -6,7 +6,6 @@ var params: MovementParams:
 	get: return machine.params
 
 var elapsed: float = 0.0
-var _initial_y_vel: float = 0.0
 var _run_speed: float = 0.0
 var _last_vel: Vector3 = Vector3.ZERO