feat: 跨实例同步移植第8轮（前端 helpers + 同步设置 UI）

新增同步 helpers（synced-options / synced-packs / game-options），在 instance helper 中补充同步类型与 API。新增实例设置「同步」标签页（SyncSettings）及 SyncSource / SyncedPacks / servers / command-history 四个弹窗，并把 CheckCircleButton、TeleportOverflowMenu 从 ui 包导出。同步相关的 en-US / zh-CN 文案已补齐（各 62 条）。game-settings-modal 留待下一轮。

packages/ui/src/components/base/index.ts

@@ -11,6 +11,7 @@ export { default as BulletDivider } from './BulletDivider.vue'
 export { default as Button } from './Button.vue'
 export { default as NewButton } from './buttons/Button.vue'
 export { default as IconButton } from './buttons/IconButton.vue'
+export { default as CheckCircleButton } from './buttons/CheckCircleButton.vue'
 export type {
 	ButtonColor,
 	ButtonElementHandle,
@@ -78,6 +79,7 @@ export { default as NavTabs } from './NavTabs.vue'
 export { default as OptionGroup } from './OptionGroup.vue'
 export type { Option as OverflowMenuOption } from './OverflowMenu.vue'
 export { default as OverflowMenu } from './OverflowMenu.vue'
+export { default as TeleportOverflowMenu } from './TeleportOverflowMenu.vue'
 export { default as Page } from './Page.vue'
 export { default as Pagination } from './Pagination.vue'
 export { default as PopoutMenu } from './PopoutMenu.vue'