feat(statistics): добавить раздел статистики трафика

Куб IPFIX час+день с AND-слайсами и экраном отчётности /statistics, живой /traffic не меняем.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/auth.ts

@@ -233,7 +233,9 @@ export function permissionForPath(pathname: string): string | null {
   }
   if (pathname.startsWith("/bgp")) return "mm:bgp:read"
   if (pathname.startsWith("/uptime")) return "mm:uptime:read"
-  if (pathname.startsWith("/traffic")) return "mm:traffic:read"
+  if (pathname.startsWith("/traffic") || pathname.startsWith("/statistics")) {
+    return "mm:traffic:read"
+  }
   if (pathname.startsWith("/alerts")) return "mm:alerts:read"
   if (pathname.startsWith("/backups")) return "mm:backups:read"
   if (pathname.startsWith("/certificates")) return "mm:certificates:read"
@@ -257,6 +259,7 @@ export function firstAllowedPath(): string {
     "/filters",
     "/uptime",
     "/traffic",
+    "/statistics",
     "/alerts",
     "/backups",
     "/settings",