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  "notes": "Coarse pass: max 15.8% over 200 m (Terrain 50), gain 291.6 m over 8493 m way. EXTENDED by graph walk: +2 segment(s) at base, +1 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 2 overlapping proposal(s): discovered-lane-53-1490-3-4587, discovered-lane-53-1599-3-4558 ADOPTED (notable slice 2026-08-11): big-gain. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (53.1336, -3.4736)'.",
  "naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (53.1336, -3.4736)'"
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  "county": "Sir Ddinbych - Denbighshire"
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 "reported_claims": [],
 "confidence": "A",
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  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 576.0,
  "shape_class": "sustained"
 }
}