Reviewed `e764b20c`, Round 5. No files modified; no tests run.

**No P1 or P2 findings.**

- **R4-1 is closed by qualification.** §7.2 now limits directory-store G2 to writers sharing one handle, matching the mutex and comparison/rename implementation. §14 explicitly separates the cross-handle defect. The S3 condition matches [AWS’s documented conditional-write semantics](https://docs.aws.amazon.com/AmazonS3/latest/userguide/conditional-writes.html).
- **R4-2 is closed.** §12’s oracle checks the pipeline actually returned by the authorization read. Installing a pipeline before the pointer read, then removing it before authorization, no longer produces a false failure.
- **Both mutants violate the revised oracle.** Moving authoritative authorization before the pointer read violates G1. Making the write unconditional violates G2 on a schedule where another writer changes the pointer between its read and replacement. Printed, replayable failing schedules are explicitly required.
- I found no new regression or incorrect citation in the revision. §16 remains Paul’s decision; this review does not resolve it.

**Verdict: accept.**