nav: 统一 NavNode schema + runtime/roadmap 分离 + 城市补父级

- navigation/nav-schema.js: 统一 NavNode schema 定义
- navigation/runtime-nav.js: MVP runtime（仅 6 城市 active）
- navigation/future-catalog.js: 路线图数据（不进 runtime）
- 旧索引文件标注 @deprecated，重定向到新路径
- 6 城市补 countryId/regionId
- game-design 明确 MVP vs V1.1+ 导航边界

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

js/content/regions/china.js

@@ -1,73 +1,5 @@
-// 中国地区列表 — 8 个地区，1 页
-
-export const chinaRegions = [
-  {
-    id: 'north_china',
-    name: '华北',
-    nameEn: 'North China',
-    sortOrder: 1,
-    themeColor: '#CC2936',
-    cityIds: ['beijing', 'tianjin', 'shijiazhuang', 'taiyuan', 'hohhot'],
-  },
-  {
-    id: 'northeast',
-    name: '东北',
-    nameEn: 'Northeast',
-    sortOrder: 2,
-    themeColor: '#5DADE2',
-    cityIds: ['shenyang', 'changchun', 'harbin', 'dalian'],
-  },
-  {
-    id: 'east_china',
-    name: '华东',
-    nameEn: 'East China',
-    sortOrder: 3,
-    themeColor: '#2ECC71',
-    cityIds: ['shanghai', 'nanjing', 'hangzhou', 'hefei', 'fuzhou', 'nanchang', 'jinan', 'suzhou', 'xiamen', 'qingdao', 'ningbo'],
-  },
-  {
-    id: 'central_china',
-    name: '华中',
-    nameEn: 'Central China',
-    sortOrder: 4,
-    themeColor: '#E67E22',
-    cityIds: ['zhengzhou', 'wuhan', 'changsha'],
-  },
-  {
-    id: 'south_china',
-    name: '华南',
-    nameEn: 'South China',
-    sortOrder: 5,
-    themeColor: '#FF6B6B',
-    cityIds: ['guangzhou', 'shenzhen', 'nanning', 'haikou', 'sanya'],
-  },
-  {
-    id: 'southwest',
-    name: '西南',
-    nameEn: 'Southwest',
-    sortOrder: 6,
-    themeColor: '#9B59B6',
-    cityIds: ['chengdu', 'chongqing', 'guiyang', 'kunming', 'lhasa'],
-  },
-  {
-    id: 'northwest',
-    name: '西北',
-    nameEn: 'Northwest',
-    sortOrder: 7,
-    themeColor: '#F4D03F',
-    cityIds: ['xian', 'lanzhou', 'xining', 'yinchuan', 'urumqi'],
-  },
-  {
-    id: 'hk_macao_tw',
-    name: '港澳台',
-    nameEn: 'HK, Macao & Taiwan',
-    sortOrder: 8,
-    themeColor: '#E74C3C',
-    cityIds: ['hongkong', 'macao', 'taipei'],
-  },
-]
-
-// 分页：1 页（8 项 ≤ 9）
-export const chinaRegionPages = [chinaRegions]
-
-export default chinaRegions
+/**
+ * @deprecated 中国地区数据已移入 navigation/future-catalog.js
+ * 仅在 V1.1+ 启用国家→地区导航后使用。
+ */
+export { chinaRegionPlan as chinaRegions } from '../navigation/future-catalog.js'