fetchVehicleList fell back to /extern/vehicle/modelfamilies for any backend
not in BACKEND_MODEL_PATH; p5fiat (Fiat) isn't mapped, so it returned 0
models and Fiat seeded nothing (0 catalog_vehicles on dev+prod). When the
primary path yields nothing, try the other known P5 listing endpoints and
use the first that returns models, logging which one worked so it can be
pinned. Only runs on the empty path → mapped backends unaffected.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Semih Yesilyurt
d918869742