The readings a trace collects arrive where every other class keeps its
relay hashes, so `path` was exactly the wrong place to keep them — and
keeping them there fed the topology graph links nobody observed. They get
`observations.trace_snrs` instead, written and read like the crypto trio
and the addressing columns before them, so a replayed frame shows the same
links a live one does rather than a blank lane.
The 1606 rows already stored were migrated in place: 2454 readings
recovered, every one of them at the 1-byte width the wire uses, and every
fabricated path cleared. The pairs read as what they always were — one
trace heard twice, once a hop out (+13.25 dB) and once on the way home
(+13.25, -5.0, -4.25), the return legs weaker exactly as a longer walk
should be.
Jean-Pierre Martineau
c246fb8080