wifi up does nothing without a wifi-iface section in UCI (common on fresh flash). Instead, create a temporary managed interface directly on phy0 via nl80211 (iw phy phy0 interface add scan0 type managed), scan on it, then delete it. No netifd/UCI involvement needed for scanning. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>