feat: 提交多个新UI组件模块spec和相关属性设定，包括卡片封装、渐变卡片、列式布局组件等，重写了readme.md，用于AI Coding

AI-Coding/openspec-lite/modules/vab-language.yaml

@@ -0,0 +1,28 @@
+# Module Spec：vab-language（语言切换）
+
+module:
+  id: vab-language
+  name: VabLanguage（语言切换）
+  type: ui
+  entrypoints:
+    - library/components/VabLanguage/index.vue
+
+public_api:
+  concept:
+    - "通过下拉菜单切换语言：更新 settings.language + i18n locale + document.title"
+
+dependency_closure:
+  runtime:
+    - "store-settings：theme.showLanguage / changeLanguage(language)"
+    - "vue-i18n：useI18n().locale"
+    - "vue-router：useRoute（读取 route.meta.title）"
+    - "utils/pageTitle：getPageTitle"
+    - "Element Plus：el-dropdown/el-dropdown-menu/el-dropdown-item"
+    - "VabIcon"
+
+acceptance:
+  - "theme.showLanguage=true 时显示入口"
+  - "切换后 settings.language 与 i18n locale 同步更新"
+
+pitfalls:
+  - "document.title 依赖 route.meta.title；目标项目若 meta.title 缺失需适配"