v0.13.1

[0.13.1] — 2026-07-29

Fixed — 0.13.0 shipped unformatted

One Attr::Bucket call in the new copy-out instrumentation exceeded the line
width, so cargo fmt --check failed on the release commit. The tag built and
released green — Release and CI are separate workflows, and formatting has
no bearing on a binary — but main was red from the moment 0.13.0 landed.

The gap was procedural: the branch was rebased onto a main that had moved, and
the merge was verified with clippy and the test suite but not with
cargo fmt --check. Rebasing reflows nothing by itself; the offending line was
inside a hunk the rebase carried across, and only the formatter's line-width
rule noticed.