parallelizing extraction, fix tcx files

bincio/extract/dedup.py

@@ -108,6 +108,8 @@ class DedupIndex:
             if distance_m is None or r.distance_m is None:
                 continue
             ref = max(distance_m, r.distance_m)
+            if ref < 1.0:
+                continue  # both near-zero (indoor/manual) — skip distance check
             if abs(distance_m - r.distance_m) / ref < 0.05:
                 return r.id
         return None