useSelectedLayoutSegment(parallelRoutesKey) returned the first segment for every route key. That matches children routes, but it misreports nested named parallel routes such as a slot path with members/profile by returning members instead of the active leaf profile.
The root cause was treating the array returned by useSelectedLayoutSegments() as having the same reduction rule for children and named slots. Match Next.js by keeping first-segment behaviour for children and using the final segment for non-children parallel route keys.
Adds a nested @team fixture route that mirrors Next.js parallel-routes-use-selected-layout-segment coverage.
* add oxfmt formatter: config, scripts, CI, editor setup, docs
* rebuild lockfile
* fix: add Format to required checks list, remove dead ignore pattern
* run fmt
* add format to agents.md again
Nathan Nguyen