diff --git a/dev-docs/BACKLOG.md b/dev-docs/BACKLOG.md
index fd86c8da..e3688f18 100644
--- a/dev-docs/BACKLOG.md
+++ b/dev-docs/BACKLOG.md
@@ -966,6 +966,7 @@ ARCH-discussie en RFC.
 
 - ~~**WS-TOOLING-001**: Claude Code deterministic guard-rail layer (5 hooks, `crewli-reviewer` subagent op Opus 4.7, 3 slash commands `/sprint-status` `/review-multitenancy` `/sync-docs`, `dev-docs/CLAUDE_CODE_TOOLING.md`). 8/8 smoke tests groen, live integratie geverifieerd. Merge `ad36c06` op 2026-05-05. Follow-ups: TECH-HOOK-001, TECH-CMD-001, TECH-STYLE-001.~~ ✅
 - ~~**TECH-DOCS-APPS-PORTAL-PURGE**: per-file DELETE/REWRITE/KEEP_AND_PURGE matrix uitgevoerd op alle 9 docs uit de oorspronkelijke entry, plus de `post-edit-eslint.sh` hook (out-of-scope vondst uit Phase A). Vijf obsolete docs verwijderd (`.cursor/instructions.md`, `.cursor/ARCHITECTURE.md`, `dev-docs/MASTER_PROMPT_CC.md`, `dev-docs/MASTER_PROMPT_CURSOR.md`, `dev-docs/dev-guide.md` — totaal ~80 KB). Drie herschreven (`SETUP.md`, `101_vue.mdc`, hook-script). Twee chirurgisch gepurgeerd (`102_multi_tenancy.mdc`, `CLAUDE_CODE_TOOLING.md`). Externe verwijzingen in README.md, CLAUDE_DESKTOP_SETUP.md, ARCH-CONSOLIDATION-2026-04.md en VIBE_CODING_CHECKLIST.md mee bijgewerkt. WS-3 PR-C op 2026-05-06. Single SPA, single cookie, single deploy host. WS-3 compleet.~~ ✅
+- ~~**WS-7 Observability — closure (mei 2026)**: 4 PRs gemerged op `feat/ws-7-observability` (infra `5f6fc07`, backend SDK `bdb89a2..0379016`, frontend SDK `bc47783..5c42f27`, docs `754222f..e9da01f`). 1551 backend + 252 frontend tests groen. Acceptance criteria 1-14 voldaan; observability volledig operationeel op `monitoring.hausdesign.nl`. Implementation criteria 3, 4, 5, 6, 8, 11, 12, 13, 14 via PRs; operationele criteria 1, 2, 7, 9, 10 via deploy-checklist (DNS, TLS, superuser+2FA, prod DSNs, email-alerting, retention 90d, cron backup). Architecturale patronen vastgelegd in `dev-docs/ARCH-OBSERVABILITY.md` (730 regels) + 2 runbooks (`observability-triage.md`, `observability-erasure.md`). Twee GlitchTip projecten (`crewli-api` + `crewli-app`), één DSN per project, runtime context-split via `actor_scope` tag. Patronen: explicit > implicit listener registration, default-in-listener / override-in-middleware voor binary tags, tenant resolution chain (route-param → portal-token → super_admin platform → user fallback). Volgsporen: OBS-1, OBS-4, OBS-6, OBS-7, OBS-9 (zie "Observability follow-ups" sectie hieronder).~~ ✅
 
 ---
 
@@ -1643,7 +1644,7 @@ _Voeg nieuwe items toe met prefix: ARCH-, COMM-, OPS-, VOL-, ART-, FORM-, SUP-,
 
 ---
 
-## Observability follow-ups (post WS-7)
+## Observability follow-ups (post WS-7 closure)
 
 > **Status overzicht (mei 2026, na WS-7 closure):**
 >