feat: metaset proxy com kernel discovery

- Adiciona função discoverMetasetEndpoint() que consulta o Kernel Registry
- Prioridade 1: Registry global (mesmo processo)
- Prioridade 2: HTTP request para porta 5001
- Fallback para configuração padrão se discovery falhar
- setupMetasetProxy agora é async e usa endpoint descoberto

server/bi/metaset-proxy.ts

@@ -5,8 +5,53 @@ const METASET_HOST = process.env.METASET_HOST || "metaset";
 const METASET_PORT = parseInt(process.env.METASET_PORT || "8100", 10);
 const METASET_TIMEOUT = 60000;
 
-export function setupMetasetProxy(app: Express): void {
-  const target = `http://${METASET_HOST}:${METASET_PORT}`;
+// Consulta o Kernel Registry para descobrir onde o Metaset está rodando
+async function discoverMetasetEndpoint(): Promise<string | null> {
+  try {
+    // PRIORIDADE 1: Registry global (mesmo processo)
+    const globalRegistry = (global as any).arcadiaKernelRegistry;
+    if (globalRegistry) {
+      const services = globalRegistry.getServices();
+      const metasetService = services.find((s: any) => 
+        s.id === 'metaset' || 
+        s.name?.toLowerCase().includes('metaset') ||
+        s.displayName?.toLowerCase().includes('metaset')
+      );
+      
+      if (metasetService?.endpoint) {
+        console.log(`[Metaset Proxy] Discovery via Kernel Registry: ${metasetService.endpoint}`);
+        return metasetService.endpoint;
+      }
+    }
+
+    // PRIORIDADE 2: HTTP request para porta 5001
+    const response = await fetch('http://127.0.0.1:5001/api/services');
+    if (response.ok) {
+      const services = await response.json();
+      const metasetService = services.find((s: any) => 
+        s.id === 'metaset' || 
+        s.name?.toLowerCase().includes('metaset')
+      );
+      
+      if (metasetService?.endpoint) {
+        console.log(`[Metaset Proxy] Discovery via HTTP: ${metasetService.endpoint}`);
+        return metasetService.endpoint;
+      }
+    }
+  } catch (error) {
+    console.log('[Metaset Proxy] Discovery falhou, usando fallback:', error);
+  }
+
+  // FALLBACK: Configuração padrão
+  return null;
+}
+
+export async function setupMetasetProxy(app: Express): Promise<void> {
+  // Tenta descobrir endpoint via Kernel Discovery
+  const discoveredEndpoint = await discoverMetasetEndpoint();
+  const target = discoveredEndpoint || `http://${METASET_HOST}:${METASET_PORT}`;
+
+  console.log(`[Metaset Proxy] Configurando proxy -> ${target}`);
 
   const metasetProxy = createProxyMiddleware({
     target,
@@ -35,5 +80,5 @@ export function setupMetasetProxy(app: Express): void {
   });
 
   app.use("/metaset", metasetProxy);
-  console.log(`[Metaset Proxy] Configurado -> /metaset/* => ${target}`);
+  console.log(`[Metaset Proxy] Ativo em /metaset -> ${target}`);
 }

server/routes.ts

@@ -90,8 +90,8 @@ export async function registerRoutes(
   setupSupersetProxy(app);
   registerSupersetRoutes(app);
 
-  // MetaSet - BI alternativo (porta 8100)
-  setupMetasetProxy(app);
+  // MetaSet - BI alternativo (porta 8100) - com Kernel Discovery
+  await setupMetasetProxy(app);
 
   // ERPNext container proxy (ativo apenas em DOCKER_MODE ou ERPNEXT_PROXY_ENABLED=true)
   setupErpNextProxy(app);