Point gains names, one per bus object as Aside's (required, at least one), regenerated with seatgen; the kept-points
fixture names its point's bus name, so the fixture test fails without the field.
Builds: design 47 G A-230, §554, §565
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h