refactor: 统一代码风格并迁移至 ESLint 新配置

style(backend): 格式化模型文件代码
style(frontend): 调整组件代码格式
chore: 删除旧 ESLint 配置并添加新配置
refactor(backend): 重构模型定义语法
style: 统一箭头函数和对象属性简写

frontend/src/components/dashboard/NavigationGrid.jsx

@@ -72,7 +72,7 @@ const createNavButtonStyle = (color, isHovered) => ({
   minWidth: 0,
 });
 
-const createNavIconContainer = (color) => ({
+const createNavIconContainer = color => ({
   width: 'clamp(44px, 10vw, 60px)',
   height: 'clamp(44px, 10vw, 60px)',
   borderRadius: designTokens.borderRadius.medium,
@@ -117,7 +117,7 @@ const NavigationGrid = ({ hoveredCard, onHover }) => {
             className="nav-button"
             style={{
               ...createNavButtonStyle(color, isHovered),
-              animationDelay: `${NAV_BUTTONS_DATA.findIndex((b) => b.key === key) * 0.1}s`,
+              animationDelay: `${NAV_BUTTONS_DATA.findIndex(b => b.key === key) * 0.1}s`,
             }}
             onMouseEnter={() => onHover(`nav-${key}`)}
             onMouseLeave={() => onHover(null)}