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  "road_source": "OpenStreetMap (local PBF extract)",
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  "osm_pbf_path": "data/cache/pbf/scotland-2026-08-14-roads.osm.pbf",
  "osm_snapshot": "2026-08-13T20:21:01Z",
  "elevation_provider": "Scottish Remote Sensing Portal (AWS Open Data, srsp-open-data)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Scottish Government, SEPA and partners; Crown copyright",
  "elevation_dataset": "Scottish Public Sector LiDAR Phase 6 50cm",
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  "notes": "Coarse pass: max 13.6% over 200 m (Terrain 50), gain 99.1 m over 2896 m way. EXTENDED by graph walk: +14 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 3 overlapping proposal(s): drumfrochar-road, murdieston-street, papermill-road ADOPTED (Scotland launch 2026-08-18): big-gain."
 },
 "area": {
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  "county": "Inverclyde"
 }
}