That is a repo-specific "concurrency-analysis" skill
Bo
Structured analysis framework for `trio`-based async races: inventories
shared mutable state, maps checkpoint boundaries, traces interleaved
task schedules, and proposes fixes. Includes tractor-specific patterns
for `_Cache` lock vs `run_ctx` lifetime, the `values`/`resources`
atomicity gap, and `Event.set()` scheduling semantics.
(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code