Coordinator::transient_snapshot builds a fresh HashMap on every call, so
each /api/state render iterates it under a different hash seed and the
dashboard's transient rows reorder while an operator watches an operation
run. Nothing downstream sorts them.
build_port_conflicts, three functions up the same file, already sorts both
its levels. This is the asymmetry, not a new convention.
Sorted by (name, kind, secs) so ties cannot drift either, plus five tests
on a builder that had none. The clamp one is the reason to bother: `since`
in the future yields a negative duration, and cast_unsigned would render
that as an age near u64::MAX rather than zero.
cd687fdb2b