feat(ui): implement dynamic dropdown navigation and refactor project cards

Replaced the static navigation with a dynamic, internationalized dropdown menu powered by a new `useNavLinks` composable. The
navigation items are now sourced from i18n files. The featured project cards on the homepage have been refactored to use the
`<UPageCard>` component, and the content schema is updated with `spotlight` and `highlight` options for enhanced display.

i18n/locales/zh-CN/common.json

@@ -0,0 +1,57 @@
+{
+  "common": {
+    "header": {
+      "services": {
+        "label": "服务",
+        "children": {
+          "softwareDev": {
+            "label": "软件开发",
+            "description": "软件和工具/自动化开发"
+          },
+          "eventVisual": {
+            "label": "活动大屏可视化",
+            "description": "在您的活动大屏幕上显示您想要的内容！"
+          },
+          "lab": {
+            "label": "实验室和测试",
+            "description": "还无法使用..."
+          },
+          "webDev": {
+            "label": "网站开发",
+            "description": "定制网页设计 + CMS"
+          }
+        }
+      },
+      "projects": {
+        "label": "案例",
+        "children": {
+          "commercialWebsite": {
+            "label": "商业网站",
+            "description": "完全定制网站展示。"
+          },
+          "tools": {
+            "label": "工具和软件",
+            "description": "我们开发的一些生活质量工具"
+          },
+          "special": {
+            "label": "特别项目",
+            "description": "特殊项目满足客户需求"
+          },
+          "gameDev": {
+            "label": "独立游戏",
+            "description": "看看我们的独立游戏！"
+          }
+        }
+      },
+      "insights": {
+        "label": "博客",
+        "children": {
+          "xiaomaiBlog": {
+            "label": "创始人博客",
+            "description": "我们工作室创始人小麦的博客网站。"
+          }
+        }
+      }
+    }
+  }
+}