Reviewed `4433a788..2fe0238c9a945e7ceb26235b82f2f7e755c305d1`.

| Finding / before-merge item | Status and evidence |
|---|---|
| **Finding 1:** stalled membership read | **ADDRESSED** — [membershipread.go:113](internal/hostactors/membershipread.go:113) applies the 15-second deadline and classifies cancellation as unknown. The attempt and backoff remain unchanged; subsequent boxes continue. Regression coverage: [autoenroll_test.go:256](internal/hostactors/autoenroll_test.go:256). |
| **Finding 2 / before-merge status mismatch** | **ADDRESSED** — all three status overrides are excluded from [hostenv.go:70](internal/hostenv/hostenv.go:70). [hostenv_test.go:398](internal/hostenv/hostenv_test.go:398) checks rejection through both assembly and seeding. |
| **Finding 3 / before-merge webhook exclusion** | **ADDRESSED** — `CARLOS_ALERT_WEBHOOK` is excluded from [hostenv.go:70](internal/hostenv/hostenv.go:70); the same regression checks refusal without exposing its value. |
| **Before merge:** obsolete DNSimple allowance | **ADDRESSED** — the plan’s [allowlist snippet:1152](docs/superpowers/plans/2026-10-17-region-ha-2b-joining.md:1152) excludes the token. |
| **Before merge:** `CheckConfirmed` references | **ADDRESSED** — [plan:2734](docs/superpowers/plans/2026-10-17-region-ha-2b-joining.md:2734) specifies unexported `checkConfirmed` and its internal confirmation. Remaining uppercase occurrences are historical census comments or the test rejecting that exported method. |
| **Before merge:** bootstrap binary placement | **ADDRESSED** — [plan:8456](docs/superpowers/plans/2026-10-17-region-ha-2b-joining.md:8456) explicitly requires a separate file outside both protected slots, with no link to either. |

The additional **2c notes are ADDRESSED**: explicit AWS region at [plan:8449](docs/superpowers/plans/2026-10-17-region-ha-2b-joining.md:8449), no launch lifecycle hook at [plan:8466](docs/superpowers/plans/2026-10-17-region-ha-2b-joining.md:8466), and obsolete evidence-prefix removal at [plan:8469](docs/superpowers/plans/2026-10-17-region-ha-2b-joining.md:8469).

The **activation-gate triage is ADDRESSED** at [plan:132](docs/superpowers/plans/2026-10-17-region-ha-2b-joining.md:132): stop/start versus reboot remains; the fresh-box guard-arm → recovery → guard-exec rehearsal and deployed allowlist audit are explicit gates. Their execution was not verified.

**New breakage in the fix range: none found.** Static review only; no builds or tests run, no files changed. The external #288 hold is excluded.

**Verdict: ready to merge**