docs(release): finalize demo-productization acceptance evidence

Records the clean-checkout drill result (127 backend tests, 56
Playwright tests, all green on an isolated fresh clone), final live
Unraid verification, and the complete required evidence summary for
the demo-productization work on this branch.

PROJECT_STATE.md

@@ -784,3 +784,37 @@ scenarios, demo manifest, About page). Gap audit: `docs/demo-release/current-dem
   demo-scenarios/demo-data/demo-guide/demo-runbook, README, .env.example), final Unraid
   deploy + live evidence with screenshots, `artifacts/demo-release/final-summary.md` —
   task #36 (final).
+
+### Batch 7 (final) — clean-checkout drill, docs, final Unraid evidence (complete)
+
+- **Clean-checkout drill**: fresh `git clone` into an isolated scratch directory,
+  isolated Compose project (`mobilityops-cleandrill`) + remapped ports via
+  `compose.override.yaml`, `up --build -d` from empty volumes. Migrations ran
+  automatically to `e7b08389f47f (head)`; seeded; full backend gate **127 passed**,
+  ruff/mypy clean; `npm ci` clean (same pre-existing advisories as before, unchanged);
+  `tsc -b`/`vite build` clean; full Playwright suite **56 passed** against the isolated
+  stack; reseeded and confirmed all 5 scenarios `ready: true` via the manifest; torn down
+  (`down -v` on the isolated project only — the working dev stack was untouched
+  throughout).
+- Added the full demo-release documentation set: `docs/demo-release/demo-concept.md`,
+  `demo-scenarios.md`, `demo-data.md`, `demo-guide.md`, `demo-runbook.md`; updated
+  `README.md` (current test counts, links to the new docs, a "Demo" section) and
+  `docs/17-runbook.md` (cross-reference to the demo-specific runbook).
+- Added `frontend/e2e/_capture-demo-screenshots.spec.ts` (tooling, excluded from the
+  regular suite) and captured 17 evidence screenshots live against
+  `http://192.168.10.150:1236` into `artifacts/demo-release/screenshots/`.
+- Final live acceptance: full Playwright suite re-run against the live server —
+  **56 passed**; `docker compose ps` on the server shows `api`/`db`/`web` all healthy;
+  `docker logs` for `api`/`web` show no errors; reseeded to leave the server
+  demo-ready after evidence capture.
+- Wrote `artifacts/demo-release/final-summary.md` with the full required evidence
+  (branches/commits, org/roles/guide/scenarios, seed/date-anchor/reset strategy, real vs.
+  synthetic vs. not-connected, all test results, clean-checkout result, deployment/
+  health/console/log results, responsive/accessibility results including the two real
+  layout bugs found and fixed this work (mobile topbar overflow in Batch 3, desktop
+  guide-panel overlap in Batch 6), known limitations, 5-/10-minute demo flows, redeploy/
+  rollback commands, and the screenshot list).
+- Demo-productization work on this branch is complete. Every task (#29–#36) is done;
+  every batch was tested locally, deployed to Unraid, and re-verified live before moving
+  to the next. See `artifacts/demo-release/final-summary.md` for the definitive
+  acceptance evidence.