Show OpenVPN OIDC prerequisites and exposed management port

backend/internal/api/api.go

@@ -285,6 +285,7 @@ func (s *Server) RegisterRoutes(r *gin.Engine) {
 		ops.POST("/binaries/install/:name", s.installBinary)
 		ops.GET("/binaries/install-hint/:name", s.binaryInstallHint)
 		ops.PUT("/tunnels/:id/policy", s.saveTrafficPolicy)
+		ops.GET("/tunnels/openvpn/oidc-readiness", s.openvpnOIDCReadiness)
 
 		// 批量操作 & 任务管理
 		ops.POST("/tunnels/batch/start", s.batchTunnels(taskmgr.ActionStart))