refactor(layout, i18n, admin): 优化布局结构与多语言支持

调整 AdminShell 组件的子组件顺序，提升代码可读性。更新 admin-breadcrumb 组件，简化导航标签翻译逻辑，确保多语言支持的一致性。重构 admin-language-switcher 组件，优化语言切换的用户体验，增强界面交互性。更新多语言配置，新增登录界面的副标题，提升用户体验。

src/i18n/locales/en/config.json

@@ -353,6 +353,26 @@
   },
   "odds": {
     "sectionHint": "Pick a version to edit prize-tier odds; publishing applies to new tickets immediately.",
+    "sections": {
+      "playScope": "Play scope",
+      "oddsConfig": "Odds"
+    },
+    "currentSelection": "Selection: {{category}} / {{play}}",
+    "playGroups": {
+      "bigSmall": "Big / small",
+      "combo4": "4D position",
+      "number3": "3D position",
+      "number2": "2D position",
+      "other": "Other"
+    },
+    "summary": {
+      "title": "Summary",
+      "version": "Version",
+      "statusLabel": "Status",
+      "readOnlyTag": "Read-only",
+      "readOnlyHint": "This version is read-only. Create a draft to make changes.",
+      "activeHint": "This version is active; new tickets use these settings."
+    },
     "tabs": {
       "all": "All"
     },