All green. Final report:
**Verified (phase 22 final pass — both task files already in `complete/`)**
- `api._disk_visible` (`is not False`) is the single gate, applied to the assembled host list in `/api/disks/snapshot` **and** `/api/summary`'s disks block before the fleet sum and the rows; `sources/disks.py`, `page-disks.js`, `poller.py`, `store.py` and `alerts.py` are byte-unchanged (`git diff --stat`: only `api.py`, `test_api.py`, docs).
- Re-ran the live browser pass `data/logs/22-task02-disks-live.cjs` against the running dev server: **34/34 PASS** — no gateway card/why-line, `2/2 hosts answering`, fleet header reads the API's `2 of 2` / `17-17-0-1`, deskwork `nvme0n1` OK 47 °C/19 202 h/11 %, driveripper 16 live cards + `13 uncorrectable` chip, both aria-labelled plots, `/` still 3 fleet rows. Screenshots + `22-task02-api.json` refreshed.
- `./scripts/dev-server.sh status`: all **nine sources `ok`**, `disks:gateway` included; live `/api/events?source=disks` still carries gateway transitions (10 of 45), proving the README/AGENTS claim the gate hides a row and not the job's history.
**Completion criteria**
- `false` host absent from both endpoints, `None` + `unreachable` stub present, fleet ≡ row count: **PASS** (6 pins in `tests/test_api.py`, incl. the single-hidden-host = 200-with-empty-list leg).
- Live `/disks` = deskwork + driveripper, header 2 hosts, cards unchanged, screenshot in `data/logs/`: **PASS** (re-run above).
- `uv run pytest` → **1477 passed, 15 skipped**; `--cov --cov-fail-under=94` → **98.94 %** (`api.py` 100 %); `ruff check src tests agent` → all passed; `pyright` → 0 errors; `bash .agents/validate.sh` → **EXIT 0**. `uv run pytest -m live --live` → **11 passed**.
- No behaviour change in completed work: **PASS** (unchanged files above; live numbers match the pre-phase fleet record).
**Docs** — README: `/disks` page-table row + the agent SMART paragraph now distinguish "cannot read drives" (dimmed cards kept) from "no smartctl" (host absent from the page/API lists). AGENTS.md: hermetic tally 1471→**1477**, and the `collectors.py`/`api.py` passages now note the `false` arm never reaches the `/disks` why-line while an overview alert from a hidden host's `disks` job still names it. Everything else (routes vs served table, env table vs `config.py`, commands, scripts/fixtures/tests references, masthead/POLL_MS/threshold/retention claims) **verified consistent**.
**Deviations** — `NOTES.md` left empty by the task runs (both notes are tracked: mTLS → phase 24 `todo/`, the admin-links bug → fixed in phase 20 task 04); `/disks`' `#hosts-empty` copy left as pinned markup (it already names smartmontools + the disk group, so an all-hidden fleet is still told the fix); validate's advisory `fastapi 0.153.0 → 0.156.4` untouched (no dependency changed this phase). No live fleet writes of any kind.
**Next pending phase:** `23_llm_rate_responsiveness`.
ducoterra
895f309f8e