diff --git a/PROJECT_STATE.md b/PROJECT_STATE.md
index e214c1c..23f6025 100644
--- a/PROJECT_STATE.md
+++ b/PROJECT_STATE.md
@@ -1808,3 +1808,35 @@ deployed line — `master` is stale, 19 commits behind). Full audit at
 - **Exact next action**: commit and deploy Batch 4; Batch 5 (AI Operations Brief using the
   demo knowledge provider since RAGcore stays off; GUI activity showcase optional-after-
   demo-complete; final regression across all gates; `artifacts/final-integrations/final-summary.md`).
+
+## Batch 5 — AI Operations Brief and final regression (2026-08-05)
+
+- Ran a real AI Operations Brief through the live ITWorx MCP Hub connector's own
+  `MobilityOpsClient` class against production Fleet Ops (no mocks, no chatbot): real
+  operations summary, real most-pressing vehicle (`MO-031`), real grounded English
+  knowledge answer with 2 citations, real correlation IDs verified end-to-end in Fleet
+  Ops's own audit log. Dutch/French question variants honestly returned `insufficient`
+  (the live Hub connector doesn't yet send the new `locale` field — a Hub-side follow-up,
+  not silently worked around). Full runbook and live output:
+  `docs/final-integrations/ai-operations-brief-runbook.md`.
+- Ran the full Playwright e2e suite against the live deployed instance (not just
+  localhost) — every spec file, ~200 tests across responsiveness/i18n/accessibility/
+  guided-demo/interactive-elements/audit/data-quality/route-matrix. Found and fixed two
+  pre-existing fragile locators (both broke because Automation legitimately has two
+  `.data-table`-classed tables now, exposed only by running the full suite together
+  rather than individual files — unrelated to this session's feature changes) and one
+  pre-existing untranslated-loanword false positive ("Workflow" is spelled identically in
+  nl-BE/fr-BE). All specs pass after the fixes.
+- Wrote `artifacts/final-integrations/final-summary.md` — the complete evidence write-up
+  per the task's own section-15 requirements: repo/deployment state, what was fixed vs.
+  handed off (RAGcore reranker → `docs/ai/BACKLOG.yaml` task `M8-01`), test results,
+  known limitations stated plainly, rollback per project.
+- Committed `57992bf`, pushed to `origin/feat/fleet-ops-final-integrations`. No redeploy
+  needed for this commit (only e2e tests and docs changed); the live instance at
+  `727c19a` already reflects every functional change.
+- **Definition of done for this task**: Batches 1-5 all have real, live, verified
+  evidence. The two items genuinely not closed — RAGcore's reranker gap and n8n workflow
+  3's publication — are deliberate, documented decisions (owner-approved hand-off /
+  separate go-live choice), not gaps hidden from this summary. No PR was opened to
+  `master`; this branch is ready for review at
+  `feat/fleet-ops-final-integrations` (`57992bf`).