feat: 提交流程中心前端代码

Vue3 + Vite + view-ui-plus 前端源码，含流程工作台、实例详情、
任务处理、管理端（定义/实例/映射/回调）等页面。
保留远程 .gitea/workflows/build.yml CI 配置。

src/main.ts

@@ -0,0 +1,41 @@
+import { createApp } from "vue";
+
+import App from "./App.vue";
+import router from "@/router";
+
+import utils from "@/utils";
+import { createPinia } from "pinia";
+
+// @ts-ignore
+import ViewUIPlus from "view-ui-plus";
+import mittBus from "@/utils/mitt";
+
+import "view-ui-plus/dist/styles/viewuiplus.css";
+
+import "@/assets/styles/main.scss";
+// 本地化的布局/主题样式（原远程 base.layout.beta / _iview_override / default-theme 合并）
+import "@/assets/styles/layout.css";
+// 规范 iconfont 图标本地实现（icon-browse / icon-edit / icon-ashbin 等，平台主题不含字体）
+import "@/assets/styles/icons.css";
+//导入自定义指令
+import directive from "@/utils/directive/index";
+
+import "virtual:uno.css";
+
+const app = createApp(App);
+
+app.use(createPinia());
+app.use(router);
+app.use(ViewUIPlus);
+
+import config from "@/assets/config/host.config";
+app.config.globalProperties.$conf = config;
+app.config.globalProperties.$utils = utils;
+app.config.globalProperties.$bus = mittBus;
+
+// direct(app);
+directive(app);
+
+import "virtual:svg-icons-register";
+
+app.mount("#app");