feat: improve agent management and speed up tests

web/admin/vite.config.ts

@@ -12,7 +12,9 @@ export default defineConfig(({ mode }) => {
     plugins: [react()],
     resolve: { alias: { '@shared': fileURLToPath(new URL('../shared', import.meta.url)) } },
     server: {
-      port: 5174,
+      // 5174 常被 Docker Desktop 占用，管理端用 5175；端口被占时直接报错，不悄悄换到别的端口
+      port: 5175,
+      strictPort: true,
       fs: { allow: ['..'] },
       proxy: {
         '/api': { target: backend, changeOrigin: true, secure: true, cookieDomainRewrite: '' },