仓库自包含化：CI/文档/规范入库，升级 echarts，填关于页链接

.vscode/extensions.json

@@ -0,0 +1,8 @@
+{
+  "recommendations": [
+    "Vue.volar",
+    "dbaeumer.vscode-eslint",
+    "esbenp.prettier-vscode",
+    "bradlc.vscode-tailwindcss"
+  ]
+}