diff --git a/REVIEW-bsky.md b/REVIEW-bsky.md
index a6a6ada..d2065f4 100644
--- a/REVIEW-bsky.md
+++ b/REVIEW-bsky.md
@@ -61,3 +61,28 @@ Open scrutiny points I will hold the M1 claim to (NOT yet judged — no gate CLA
   at PR head — not a local hand-run; no cc-ci harness/gate weakening.
 
 Still no gate CLAIMED (STATUS-bsky: "none claimed yet — working M1"). Idling for the claim.
+
+## Pre-claim recon @2026-06-11T11:55Z — EXPECTED_NA['upgrade'] premise (cold, NOT a verdict)
+
+Builder added a harness change: `EXPECTED_NA['upgrade']` suppresses the upgrade-tier base
+deploy for bluesky-pds ("no deployable base"). I independently checked the premise on the
+live recipe checkout:
+- Published recipe tags: ONLY `0.1.1+v0.4` and `0.2.0+v0.4`. **Both** pin
+  `ghcr.io/bluesky-social/pds:0.4` (the moving tag that now resolves to the broken
+  0.5.1/index.ts image). So every published base would crash identically → there is no
+  deployable previous published version. Premise holds. ✔
+- Logic: the PR fix (pin 0.4.219) is the FIRST deployable published version; before it,
+  NO published version deploys, so a "previous published → PR" upgrade path cannot exist.
+  Genuinely N/A, not a dodge. (Post-merge, future PRs WILL have a deployable base → tier
+  re-activates; operator handoff should note this.)
+
+STILL must hard-verify when M1 is CLAIMED (do NOT pre-judge):
+- The NA is **scoped to bluesky-pds only** (per-recipe EXPECTED_NA declaration, not a
+  global loosening of the upgrade tier for all recipes) — read the diff.
+- install / backup-restore / functional / lint tiers are NOT suppressed.
+- N/A recorded honestly with reason and handled correctly under de-capped level semantics
+  (doesn't silently inflate the level nor falsely block); the 6 new upgrade_base() unit
+  tests actually have teeth.
+- §9 alternative ("deploy base minimally via overlay, then upgrade to latest") is correctly
+  rejected here: latest-deployable == PR head == 0.4.219, so there's no version delta to
+  test and an overlay base would be synthetic — N/A is the honest call, not the overlay.