Agregar proxy para clips y snapshots de Frigate

- Crear /api/frigate/events/:eventId/clip con soporte de range requests
- Crear /api/frigate/events/:eventId/snapshot
- Usar IP interna 192.168.87.29:5000 para evitar autenticacion Authentik
- Actualizar URLs en useFrigateEvents para usar proxies internos

nuxt4/server/api/frigate/events/[eventId]/snapshot.get.ts

@@ -0,0 +1,73 @@
+/**
+ * Proxy endpoint para obtener snapshots de eventos de Frigate
+ * GET /api/frigate/events/:eventId/snapshot
+ */
+
+export default defineEventHandler(async (event) => {
+  // Verificar autenticación via headers de Authentik
+  const headers = getRequestHeaders(event)
+  const username = headers['x-authentik-username']
+
+  if (!username) {
+    throw createError({
+      statusCode: 401,
+      message: 'No autenticado'
+    })
+  }
+
+  const eventId = getRouterParam(event, 'eventId')
+
+  if (!eventId) {
+    throw createError({
+      statusCode: 400,
+      message: 'Se requiere eventId'
+    })
+  }
+
+  // URL interna de Frigate
+  const FRIGATE_URL = process.env.FRIGATE_URL || 'http://192.168.87.29:5000'
+
+  try {
+    const response = await fetch(
+      `${FRIGATE_URL}/api/events/${eventId}/snapshot.jpg`,
+      {
+        method: 'GET',
+        headers: {
+          'Accept': 'image/jpeg'
+        }
+      }
+    )
+
+    if (!response.ok) {
+      throw createError({
+        statusCode: response.status,
+        message: `Error al obtener snapshot: ${response.statusText}`
+      })
+    }
+
+    // Configurar headers de respuesta
+    setResponseHeader(event, 'Content-Type', 'image/jpeg')
+
+    const contentLength = response.headers.get('content-length')
+    if (contentLength) {
+      setResponseHeader(event, 'Content-Length', contentLength)
+    }
+
+    // Cache por 5 minutos (los snapshots no cambian)
+    setResponseHeader(event, 'Cache-Control', 'public, max-age=300')
+
+    // Retornar el stream de la imagen
+    return response.body
+  } catch (error: unknown) {
+    console.error('[Frigate Snapshot Proxy] Error:', error)
+
+    if ((error as any).statusCode) {
+      throw error
+    }
+
+    throw createError({
+      statusCode: 500,
+      message: (error as Error)?.message || 'Error al obtener snapshot'
+    })
+  }
+})