feat: Add initial player scene with character models and effects, implement core lobby UI and functionality, and introduce a 3D outline shader.

scenes/player.gd

@@ -438,6 +438,26 @@ func set_character(character_name: String) -> void:
 		anim_player.root_node = anim_player.get_path_to(active_character)
 		# Start with idle animation
 		play_idle_animation()
+		
+	# Apply outline shader to the active character
+	if active_character:
+		_apply_outline_recursive(active_character)
+
+func _apply_outline_recursive(node: Node):
+	if node is MeshInstance3D and node.mesh:
+		for i in range(node.mesh.get_surface_count()):
+			var mat = node.get_active_material(i)
+			if mat:
+				# Only apply if it doesn't already have a next pass
+				if not mat.next_pass:
+					var unique_mat = mat.duplicate()
+					var outline_mat = ShaderMaterial.new()
+					outline_mat.shader = load("res://assets/shaders/outline3d.gdshader")
+					unique_mat.next_pass = outline_mat
+					node.set_surface_override_material(i, unique_mat)
+	
+	for child in node.get_children():
+		_apply_outline_recursive(child)
 
 @rpc("any_peer", "call_local", "reliable")
 func sync_character(character_name: String) -> void: