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Maurice
676c82a308
The vias already made the day follow the road; nothing said which road. After a reload the badge could only say "shaped by hand", and re-fitting after the stops changed meant finding the track again by eye. One row per day, written in the same transaction as the chain it describes: a day claiming to follow a road whose vias never landed would be worse than a day claiming nothing. Three states rather than two, which is why the field is an object and not an id — absent leaves whatever the day followed alone, null says it follows nothing, an object records the road it now takes. A bare nullable id could not tell "do not touch this" apart from "forget it", and a hand-dragged via on the same day must not wipe the label. The foreign key is the point: delete the imported track and the label cascades with it, so no day is left claiming to follow a line nobody can see. The vias stay, because they are the drive. Both write paths check that the place is a track of this trip before it becomes a label — permission alone would let another trip's place id, or an ordinary place, become a name that can never be drawn. Also clears three reliability findings the scanner raised on this branch: two default sorts given an explicit comparator, and a trailing-slash regex the scanner is right to call backtracking, walked instead.