perf(font): 优化字体渲染并添加抗锯齿设置

- 在所有字体文件中添加 keep_rounding_remainders 属性，提高字体渲染质量
- 更新项目设置，启用抗锯齿功能
- 调整场景文件中的资源引用，添加 UID 信息

engine/scenes/interface/dashboard/dashboard.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=94 format=3 uid="uid://mdc0m23n7dli"]
 
-[ext_resource type="Script" path="res://scripts/interface/dashboard/dashboard.gd" id="1_rpuli"]
+[ext_resource type="Script" uid="uid://4ydggwps351r" path="res://scripts/interface/dashboard/dashboard.gd" id="1_rpuli"]
 [ext_resource type="Texture2D" uid="uid://bhtkq2he8kflt" path="res://assets/interface/footer_header.png" id="2_ear8b"]
 [ext_resource type="Texture2D" uid="uid://cobfbremn7xlx" path="res://assets/interface/footer_bottom.png" id="3_5os3k"]
 [ext_resource type="Texture2D" uid="uid://crrecvf5mnlbr" path="res://assets/interface/footer_middle/left/time/001.png" id="4_skxru"]