feat: 新增键盘快捷键设置

- 设置页新增「键盘快捷键」分类，可自定义快捷键绑定
- 支持快速滚动（Home/End/PageUp/PageDown）与导航跳转（Ctrl/Cmd+数字）
- 快捷键绑定与开关按动作独立持久化，默认关闭
- 新增 ui 包 keybinding 组件与工具（KeybindingModal/KeybindingChips 等）

apps/app-frontend/src/components/ui/settings/settings-registry.ts

@@ -7,6 +7,7 @@ import {
 	GameIcon,
 	GaugeIcon,
 	InfoIcon,
+	KeyboardIcon,
 	LanguagesIcon,
 	LayoutTemplateIcon,
 	PaintbrushIcon,
@@ -49,6 +50,10 @@ const categoryContent: Record<SettingsCategoryId, Pick<SettingsCategory, 'icon'
 		icon: LayoutTemplateIcon,
 		content: defineAsyncComponent(() => import('./HomeNavigationSettings.vue')),
 	},
+	'shortcut-settings': {
+		icon: KeyboardIcon,
+		content: defineAsyncComponent(() => import('./KeybindSettings.vue')),
+	},
 	'language-translation': {
 		icon: LanguagesIcon,
 		content: defineAsyncComponent(() => import('./LanguageTranslationSettings.vue')),