Boot greeting (splash subtitle + TTS) already geolocates via /mnt/last-city.txt after the first wifi connect. Add a config.json "city" field, baked by `ac-inscribe --city <city>`, so a freshly-flashed device greets from wherever it's shipped (e.g. Ridgewood) on first boot, before any IP lookup. Falls back to that preset, then "Los Angeles", when the live cache is absent.