Reviewed `6a9b6a95`.

| Round 6 finding | Disposition | Assessment against rev 7 |
|---|---|---|
| P1 — an unshared thread’s descriptor can pass as the replicator’s | Resolved | Kernel checks establish shared tables and open file descriptions; unavailable comparisons fail closed. Tests cover copied and independently reopened descriptors. |

The six earlier findings marked resolved in round 6 remain resolved.

**New finding:**

1. **P2 — Task 7, Step 4: retrying an interrupted release repeats flushes after producers have closed.**

   [Release reads the durable positions](/home/paulca/amadan.net/carlos/platform/.claude/worktrees/region-ha-1b-next/docs/superpowers/plans/2026-10-07-region-ha-1b-next-relocation.md:8556), but a retry under the same controller constructs a fresh drain. That drain [unconditionally repeats both flushes](/home/paulca/amadan.net/carlos/platform/.claude/worktrees/region-ha-1b-next/docs/superpowers/plans/2026-10-07-region-ha-1b-next-relocation.md:8613).

   Root can fail **after producers close but before its receipt is durable**: [kernel verification and receipt persistence follow the drain acknowledgement](/home/paulca/amadan.net/carlos/platform/.claude/worktrees/region-ha-1b-next/internal/host/claimstop.go:219). The retry therefore flushes an already closed replicator instead of resuming the completed work. This can prevent release completion despite valid recorded positions. The existing lost-response test covers only failure after root completed its receipt.

   **Fix:** when the same stop already has durable positions, reuse them and resume at the idempotent producer drain, then let root verify and persist the receipt. Add a test that closes producers, fails before receipt persistence, and retries without restarting; neither flush callback should run again.

I accept rulings 1–24. Stage B’s contracts retain the earlier review obligations.

All 12 embedded patches pass `git apply --check`; all 39 complete Go blocks parse with `gofmt`. Compilation and tests were not reproduced in this read-only sandbox. No files changed.

**Verdict: not ready — Stage A needs the release-retry fix; Stage B contracts are complete.**