The code was formatted by hand, and `cargo fmt --check` differed in 866
places. rustfmt.toml keeps the house's long lines (120) and short
expressions on one line, which halves what changes; this commit is only
what rustfmt does with it, and is named in .git-blame-ignore-revs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The exporter setup and the traceparent parser move from ipx into ipx_directory::otel, which ipx
already depends on, so both binaries share them. The directory makes a span a request, a child of
the caller's traceparent, and a trace a refresher round with a span a feed; ipx sends the current
span's traceparent on every call to the directory and wraps each share in a span. The dashboard's
Traces row and the prod-check skill cover all three services.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
