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).
The file was in /app/data/ which gets overwritten by the Docker volume
mount (backend_data:/app/data), making it invisible at runtime and
causing scan failures on fresh installs. Moved to /app/app/data/ so
it stays baked into the image.
Ryan Tregea