77718a5239
Moves the OUI mapping from an inline dict in fingerprint.py into data/oui_database.json grouped by vendor, matching the service_signatures data-file pattern. Adds ~100 curated OUIs covering MikroTik, Ubiquiti, Synology, QNAP, Cisco, Aruba, Juniper, Hikvision, Dahua, Reolink, Axis, Raspberry Pi, Dell, Supermicro, and others. Existing IoT vendors and hypervisor OUIs are preserved. For multi-product vendors the OUI is tagged with the most common homelab category (e.g. Ubiquiti -> ap) and port hints in suggest_node_type continue to upgrade ambiguous matches (Ubiquiti + BGP -> router).