diff --git a/docs/BACKLOG.md b/docs/BACKLOG.md
index 203a61143..fd7afcc56 100644
--- a/docs/BACKLOG.md
+++ b/docs/BACKLOG.md
@@ -329,6 +329,7 @@ are closed (status: closed in frontmatter)._
 - [ ] **[B-0549](backlog/P1/B-0549-riven-cursor-terminal-background-loop-ide-native-autonomous-gate-2026-05-15.md)** Riven Cursor Terminal background loop — IDE-native autonomous gate with manager contract
 - [ ] **[B-0550](backlog/P1/B-0550-docs-research-audit-2026-05-16.md)** Docs/research cross-reference audit
 - [ ] **[B-0554](backlog/P1/B-0554-riven-terminal-loop-graceful-shutdown-tombstone.md)** Riven Cursor Terminal loop graceful shutdown tombstone
+- [ ] **[B-0559](backlog/P1/B-0559-verify-before-state-claim-audit-lesson.md)** Class-level lesson encoded as a verify-before-state-claim audit (decomposed from B-0139)
 
 ## P2 — research-grade
 
@@ -569,7 +570,7 @@ are closed (status: closed in frontmatter)._
 - [x] **[B-0420](backlog/P2/B-0420-poll-pr-gate-thread-pagination-bug-2026-05-11.md)** poll-pr-gate.ts thread pagination drift — NOT A BUG (race condition)
 - [x] **[B-0421](backlog/P2/B-0421-grok-peer-call-failure-cursor-agent-exit-1-2026-05-11.md)** Grok peer-call failure — cursor-agent exit 1 during multi-agent review
 - [ ] **[B-0430](backlog/P2/B-0430-peer-call-wrappers-codeql-insecure-tmp-file-all-8-wrappers-substrate-consistent-fix-2026-05-13.md)** Peer-call wrappers — CodeQL insecure-temp-file alert on autogenOutputPath() across all 8 wrappers (substrate-consistent fix needed)
-- [ ] **[B-0443](backlog/P2/B-0443-launch-substrate-carve-out-for-persona-naming-in-docs-launch-2026-05-13.md)** Launch-substrate carve-out — persona naming allowed in docs/launch/** under existing closed-list pattern
+- [x] **[B-0443](backlog/P2/B-0443-launch-substrate-carve-out-for-persona-naming-in-docs-launch-2026-05-13.md)** Launch-substrate carve-out — persona naming allowed in docs/launch/** under existing closed-list pattern
 - [x] **[B-0444](backlog/P2/B-0444-bus-claim-envelope-worktree-field-multi-surface-disambiguation-2026-05-13.md)** Bus claim envelope — add `worktree` field for multi-surface disambiguation + worktree-aware claim semantics
 - [ ] **[B-0446](backlog/P2/B-0446-lean4-formal-proof-completion-dbsp-core-identities-pm2-2026-05-13.md)** Lean 4 formal proof completion — DBSP chain rule + core stream-calculus identities
 - [ ] **[B-0447](backlog/P2/B-0447-nuget-package-metadata-completeness-pm2-2026-05-13.md)** NuGet package metadata completeness — description, tags, SourceLink, semantic versioning
diff --git a/docs/backlog/P2/B-0443-launch-substrate-carve-out-for-persona-naming-in-docs-launch-2026-05-13.md b/docs/backlog/P2/B-0443-launch-substrate-carve-out-for-persona-naming-in-docs-launch-2026-05-13.md
index b9465b457..35d4b42c6 100644
--- a/docs/backlog/P2/B-0443-launch-substrate-carve-out-for-persona-naming-in-docs-launch-2026-05-13.md
+++ b/docs/backlog/P2/B-0443-launch-substrate-carve-out-for-persona-naming-in-docs-launch-2026-05-13.md
@@ -1,12 +1,12 @@
 ---
 id: B-0443
 priority: P2
-status: open
+status: closed
 title: "Launch-substrate carve-out — persona naming allowed in docs/launch/** under existing closed-list pattern"
 tier: governance
 effort: S
 created: 2026-05-13
-last_updated: 2026-05-13
+last_updated: 2026-05-16
 depends_on: []
 composes_with: [B-0429]
 tags: [governance, launch-substrate, persona-naming, agent-best-practices, copilot-recurring-finding]
@@ -159,3 +159,36 @@ The carve-out is the substrate-honest option.
 the amendment extends)
 
 PR #2997 + PR #3001 (the recurring policy-finding observations)
+
+## Resolution
+
+Closed 2026-05-16 via audit-triage discovery of substrate drift.
+
+**Deliverable shipped**: `docs/AGENT-BEST-PRACTICES.md` line 709
+contains the carve-out for `docs/launch/**` with the exact rationale
+proposed in this row:
+
+> `docs/launch/**` — launch substrate (public-facing positioning
+> artifacts; persona names + external creator attributions allowed
+> because the substrate's job is to preserve the multi-agent
+> factory's named-team positioning AND IP-respect attribution at a
+> specific date...)
+
+**Drift class**: #1 (pure drift) — the amendment is present in
+AGENT-BEST-PRACTICES.md but the row's `status: open` was never
+updated.
+
+**Acceptance verification** (zero gh):
+
+- ✅ Policy line added to AGENT-BEST-PRACTICES.md closed-list (line 709)
+- ✅ Rationale preserves multi-agent transparency value ("multi-agent factory's named-team positioning")
+- ✅ Cross-references IP-respect commitment ("IP-respect attribution")
+- ✅ Future PRs creating docs/launch/** files no longer trigger persona-naming policy findings (forward-going; observable as absence of recurring Copilot/Codex findings on launch substrate PRs)
+
+**Surfaced by**: `tools/hygiene/audit-backlog-status-drift.ts` candidate
+list + manual existence + content-coverage check (`grep -nE "docs/launch"
+docs/AGENT-BEST-PRACTICES.md`).
+
+**Composes with**: PR #2997 + PR #3001 (the recurring policy-finding
+observations that triggered the carve-out); PR #2980 (the launch thread
+already operating with persona naming throughout).