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agessaman 3a4d7aab33 feat(web-viewer): add flood-packet distance to the hops chart
Keeps the advert series — nodes by their closest observed path — and
adds arriving flood packets by how far they had already travelled.

The two answer different questions and, on the live mesh, disagree
usefully: nodes peak at 2-3 hops and fall away quickly, while flood
traffic peaks at 5 and holds a long tail past 16. A close-in
neighbourhood absorbing flood from well beyond it.

One series counts nodes (2.8k) and the other packets (156k), so raw
counts on a shared axis would flatten the node series into the baseline.
Both are drawn as a share of their own total, with absolute counts in
the tooltip, and padded onto one contiguous hop range so the bars line
up. They also cover different spans — 7 days of adverts against
whatever packet_stream retains — so each is labelled with its own
window instead of being presented as one period.

Watch the units. observed_paths.path_length is a BYTE count, so hops are
path_length / bytes_per_hop. packet_stream.path_len is already a HOP
count, with the byte length carried separately as path_byte_length. A
17-hop 3-byte path is path_length 51 in one table and path_len 17 in the
other. Applying either rule to the other silently rescales the axis and
the only symptom is a chart that looks a bit off, so both conventions
are now pinned by tests against the shapes real rows take.

Flood packets carry no sender identity and observed_paths holds only
adverts, so the flood series cannot be reduced to a shortest path per
node the way the advert series is. It is a per-packet distribution, and
the tooltip says so.
2026-07-29 22:45:21 -07:00
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