Agregar endpoints proxy para evitar CORS entre subdominios

- /api/streams/list: proxy a streams.nucleoriofrio.com/api/streams
- /api/frigate/event: proxy a camaras.nucleoriofrio.com/api/events
- Actualizar composables para usar los proxies del backend
- Los iframes de streaming siguen usando URLs directas (sesion propia)

nuxt4/app/composables/useStreams.ts

@@ -1,6 +1,8 @@
 /**
  * Composable para gestionar streams de video desde go2rtc
- * API: https://streams.nucleoriofrio.com/api/streams
+ * Usa proxy backend para evitar problemas de CORS/cookies entre subdominios
+ * API Proxy: /api/streams/list
+ * Streaming: https://streams.nucleoriofrio.com (iframe con sesion propia)
  */
 
 export type StreamType = 'webrtc' | 'mse' | 'mp4' | 'hls' | 'mjpeg'
@@ -56,16 +58,15 @@ export const useStreams = () => {
   const error = useState<string | null>('streams_error', () => null)
 
   /**
-   * Obtiene la lista de streams disponibles desde la API
+   * Obtiene la lista de streams disponibles via proxy backend
    */
   const fetchStreams = async (): Promise<void> => {
     isLoading.value = true
     error.value = null
 
     try {
-      const response = await $fetch<Record<string, unknown>>(`${BASE_URL}/api/streams`, {
-        credentials: 'include'
-      })
+      // Usar proxy backend para evitar CORS/cookies issues
+      const response = await $fetch<Record<string, unknown>>('/api/streams/list')
 
       // Extraer nombres de streams del objeto
       streams.value = Object.keys(response).sort()