JLR Retailer Coverage — Review Needed

JLR retailer collection (ai_public_api/jlr/retailerlocator.py) fans out over the shared ai_core.geo.US_NATIONAL_ZIP_SWEEP constant — the same hardcoded 58-zip list used by GM and Honda — at 500-mile radius, deduped by ciCode.

A hands-on review of GM's use of this same sweep (at 100mi) found major coverage gaps — only 62.4% of continental-US ZIP centroids within radius, plus three invalid/hallucinated zips that silently returned nothing. See GM Dealer Source for the full analysis and the general Verification procedure.

The three fake zips have been corrected in ai_core.geo (they affected JLR too). At 500mi, 58 anchors almost certainly blanket the continental US, so JLR is the least exposed of the three — but this has not been measured.