refactor(openflare): migrate console APIs to v1 and centralize routing

Move OpenFlare management endpoints to /api/v1/custom/openflare with
Wavelet response envelopes and Abort* error handling. Keep agent, relay,
and flared protocol routes on /api/* with the legacy compat format.

- Add apiutil helpers and Swagger annotations for console handlers
- Register all OpenFlare routes in internal/router/openflare (not apps)
- Switch frontend services to OpenFlareBaseService and v1 paths
- Remove dead auth/compat code and legacy-base.service.ts
- Update integration tests and changelog

Wavelet/internal/router/v1/openflare/register_node.go

@@ -0,0 +1,29 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package openflare
+
+import (
+	"github.com/Rain-kl/Wavelet/internal/apps/openflare/apiutil"
+	"github.com/Rain-kl/Wavelet/internal/apps/openflare/node"
+	"github.com/gin-gonic/gin"
+)
+
+func registerNodeRoutes(apiGroup *gin.RouterGroup) {
+	nodeRoute := apiGroup.Group("/nodes")
+	nodeRoute.Use(apiutil.AdminRequired())
+	{
+		nodeRoute.GET("/bootstrap-token", node.GetBootstrapTokenHandler)
+		nodeRoute.POST("/bootstrap-token/rotate", node.RotateBootstrapTokenHandler)
+		apiutil.RegisterCollection(nodeRoute, "GET", node.ListNodesHandler)
+		apiutil.RegisterCollection(nodeRoute, "POST", node.CreateNodeHandler)
+		nodeRoute.GET("/:id/agent-release", node.GetAgentReleaseHandler)
+		nodeRoute.POST("/:id/update", node.UpdateNodeHandler)
+		nodeRoute.POST("/:id/delete", node.DeleteNodeHandler)
+		nodeRoute.POST("/:id/agent-update", node.RequestAgentUpdateHandler)
+		nodeRoute.POST("/:id/openresty-restart", node.RequestOpenrestyRestartHandler)
+		nodeRoute.POST("/:id/force-sync", node.RequestForceSyncHandler)
+		nodeRoute.GET("/:id/observability", node.GetObservabilityHandler)
+		nodeRoute.POST("/:id/observability/cleanup", node.CleanupHealthEventsHandler)
+	}
+}