**Phase 20 final verification pass — all four tasks already complete; verified in full.**
- Verified: three-row masthead CSS (`.masthead` flex-wrap + two `flex-basis: 100%`, `min-height`, no `margin-inline-start`), un-sticky `position: relative` + `z-index: 40`, 180 ms `visibility/opacity/transform` slide (closed `nav.tabs` / open `.is-open`, both states in the file's single reduced-motion block), both admin links on all 8 signed-in pages, `/login` neither.
- `uv run pytest` → **1464 passed, 15 skipped** · `uv run pytest --cov --cov-fail-under=94` → **98.94%** (floor 94, unchanged) · `ruff check src tests agent` clean · `pyright` 0 errors · **`bash .agents/validate.sh` EXIT=0** (incl. `node --check` + repo hygiene) · `uv run pytest -m live --live` → **11 passed**.
- Browser (live dev server, invariant 10): `20-task01-rows.cjs` 121 PASS/0 FAIL · `20-task02-unsticky.cjs` 81/0 · `20-task03-slide.cjs` 32/0 · `20-task04-admin-links.cjs` 87/0 · phase-18 `nav-final-pass.cjs` 45/45, `nav-task03-verify` 77, `nav-task04-verify` 24/24 · phase-19 scripts 11/22/24/29 all pass. Screenshots refreshed in `data/logs/` (`masthead-rows*`, `masthead-unsticky*`, `slide-*`, `admin-links-*`). Dev server restarted; `/api/health` all nine sources `ok`.
- Completion criteria: 3-row bar @1280/360 ✓ · scroll leaves bar behind + dropdown under whole bar ✓ · slide out/in 180 ms, reduced-motion snap ✓ · `/certs`→`⚷ Certs`, `/settings`→`⚙ Account` before theme toggle, outside `.tabs` ✓ · pytest/coverage/ruff/pyright ✓ · validate ✓ · no regression in tab structure, token reveal, safe-area padding, four close paths, status dots, theme toggle ✓.
- Docs: **AGENTS.md** gap 12 still said phase 20 was "in `todo/`… admin-link half has landed" and attributed the wrap to the old fixed 58 px row — rewritten to the completed state (three rows/un-sticky/slide/both links; 24 still todo; 21's `/certs` `.scroll` noted as not reaching `/`'s table). **README.md** `web/` bullet enumerated the controls row without `⏸ Pause` and omitted `/login` from the two-row list — both fixed. Everything else (setup, commands, env table vs `config.py`, routes vs `api.py`, agent/installer flags, testing policy) verified consistent.
- Deviations: no dependency bump — `uv pip list --outdated` still reports the pre-existing advisory `fastapi 0.153.0 → 0.156.4` (deps untouched this phase, validate treats it as advisory); `NOTES.md` is empty in the working tree from an operator edit outside these tasks (both items live in phases 20/24) — left as-is; no live-infra changes made or needed.
- Next pending phase: `21_page_cleanups` (pause button removal, `/system` GPU values, `/certs` table scroll).
ducoterra
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