v7: clear stale route cache on seed version change; DELETE+INSERT seeds

Fix NH-44 south coords: road goes via Kovilpatti, not Rajapalayam

Fix pass logic: always merge Pass1+Pass2; fix Madurai-south coords

Fix stale routes, fill south India gaps, extend cache to 90 days

Add full India highway coverage — 67 new seed plazas across 9 highways

Add Chennai→Madurai plazas and fix corridor matching

Fix 400: remove geometry_format param, restore geometry:true

Fix 406: revert to /json, add geometry_format=geojson in body

Fix wrong map routes and restore reliable rate fallback

Always fetch live NHAI TIS rates — remove hardcoded seed rate table

Fix inaccurate map plazas and improve NHAI TIS API

Add US toll plaza seeds and fix 0-plaza bug for United States routes

Fix 0 toll plazas: three-pass spatial strategy with 2000m seed buffer

Fix ORS 'no route' error — handle both GeoJSON and JSON response shapes

Fix 0 toll plazas and improve routing

Fix ORS geocode URL — remove /v2/ prefix (geocoding endpoint is /geocode/search not /v2/geocode/search)

Add complete Highway Toll Calculator — India & US