E-2d teardown complete: drill customer + host removed from the hub

The delete was correctly refused at four successive gates while the host still
read ONLINE (acknowledgements -> typed confirm_id -> expect_hosts stale-preview
-> "host is ONLINE"). Rather than force it, the run waited for the destroyed
host to age to DOWN; delete-impact then reported deletable:true and the
documented cascade ran:

  host deleted (escrow demoted to retained custody), tenantsync deprovisioned,
  PBS tenancy deprovisioned, claim reset to unclaimed, residue purged
  (reports=5 app_telemetry=5 notif_prefs=1 appliance_registrations=1)

Verified after: 0 occurrences of "e2d" anywhere on the hosts page; demo-felhom
and demo-hp ONLINE on agent 0.113.0; drill-r50 and peti-felhom unchanged;
demo-hp carries only guest 9201 and VM 300.

Scoping checked rather than assumed: the single purged appliance_registration
was this run's own appliance (810d10c5, bound to e2d-fresh). The unrelated stale
2026-07-25 appliance (206c8838 / QWA-WJE) was NOT touched by the cascade — the
operator removed it separately.

- OPEN-ITEMS.md: the drill-cleanup WATCHING row is removed (done, not open).
- audits/E2D-fresh-vm-2026-07-29.md §8 + REPORT-e2d.md: teardown recorded as
  complete, with the cascade output and the appliance-scoping note.

documentation/backlog/OPEN-ITEMS.md

@@ -18,7 +18,6 @@ State: `BLOCKED` · `READY` · `WAITING-ON-OPERATOR` · `WATCHING`. Every row ha
 | **R-113** | **The drive-absent gate CANNOT FIRE on device loss — E-2b's alarm is wired to an unreachable condition.** `planDriveGates` (`intermediary.go:216-262`) computes presence by OR-ing `d.BoundUnderParent` into `present[GuestPath]`, and the agent derives `BoundUnderParent` from `GuestSeesMount()` — *"is this path a mount target in the guest's `/proc/<pid>/mountinfo`"* (`localapi/disks.go:210`). The raw drive mount is a **device-bound systemd unit** and dies with the device; **the agent's own bind under the shared parent is NOT device-bound, so its mountinfo entry outlives the device**. The gate reads the surviving bind as "present" ⇒ no `Stop` action ⇒ `notifyDriveAbsent` never called | **READY (M) — P1** | — | **PROVEN LIVE 2026-07-29 on a fresh box.** Target drive hot-detached under a running agent; over 4½ min (budget was 60 s): the **agent** said `enrolled drive absent by UUID` every 20 s, the controller logged **0** `[gate]` lines, and the hub received **zero** events — no `backup_target_absent` **and no generic `storage_disconnected`**. Measured with the device gone: `/mnt/mentes2` NOT mounted, `/mnt/felhom-drives/mentes2` still `/dev/sdb[/felhom-data]`. **Not a virtualisation artefact** — the asymmetry is device-bound-mount vs manual-bind, identical on metal (caveat: proven on SCSI hot-detach; physical unplug not staged). **Mirror scenario reasoned, not observed:** both the specific and generic events come from the same `a.Stop` branch, so the generic one is equally unreachable. **Sixth instance of seam-built-but-never-wired** — E-2b wired the seam, to a condition that cannot occur. Evidence: `audits/E2D-fresh-vm-2026-07-29.md` §5.2 | CC |
 | **R-112** | **E-2's degraded banner and offer have NO UI CONSUMER — the endpoint is correct and the customer never sees it.** `GET /api/storage/backup-target` returns byte-exact copy (proven live), and **nothing fetches it**: `grep 'backup-target'` across all `*.html`/`*.js`/`*.css` → **0 hits**; no template references `OfferPath`/`Degraded`/the copy; `resolveBackupTargetState` + `degradedMessageFor` are consumed **only** by the JSON handler — **no page handler injects the state** | **READY (S) — P1** | — | **The decisive contrast: templates fetch 18 distinct `/api/storage/*` endpoints; `backup-target` and `backup-target/assign` are the only two with zero references.** The handler's own comment calls itself *"the dashboard's source for the degraded banner and the offer"* — an invariant comment asserting a consumer that does not exist (7th instance of that class). v0.185.1 shipped as *"the offer endpoints were mounted where nothing routed to them"* — it fixed the **router mount** and stopped one layer short of the **render**; its test `TestBackupTargetRoutesLiveUnderTheStorageAPIMount` pins dispatch, not reachability, which is exactly what `CLAUDE.md`'s seam rule warns about. **Fifth instance of seam-built-but-never-wired.** **Fix R-114 FIRST** — wiring this alone would start showing customers the wrong message. Evidence: `audits/E2D-fresh-vm-2026-07-29.md` §5.1 | CC |
 | **R-114** | **On target-drive loss the customer is told the wrong story and offered the drive that just vanished.** With the assigned target absent, the endpoint returned `degraded:true, target:"felhom-backup"` **plus** the *"a rendszermentés ugyanazon a lemezen van, mint a rendszer"* message — false, the target is a drive that has disappeared, not the system disk — **and** `offer_path` pointing at the missing drive as the remedy | **READY (S)** | — | `resolveBackupTargetState` falls through to the generic degraded branch whenever no disk satisfies `d.BackupTarget && d.MountPath != ""`, never distinguishing **never configured** from **configured and now missing**. Shares R-113's root cause — two disagreeing presence signals — but is a different code path with a different fix. **Currently invisible ONLY because of R-112; fix this before wiring that.** Also seen: after reattach the drive returned as `/dev/sdc` while the stable bind still recorded `/dev/sdb`, and the state read healthy. Evidence: `audits/E2D-fresh-vm-2026-07-29.md` §5.3 | CC |
-| — | **Drill cleanup: hub records for `e2d-fresh` + host `e2d-fresh-ac9f09` still present** | WATCHING | the host aging OK → WARN (30 m) → DOWN (>1 h); the VM is already destroyed so no further reports come | Delete was attempted and **correctly refused** at four gates, finally `host … is ONLINE`. Once it reads DOWN: `POST /configs/e2d-fresh/delete ack_hosts=1 ack_reset=1 ack_purge=1 confirm_id=e2d-fresh expect_hosts=1`. Deleting rather than keeping is deliberate — R-93 records what a half-real fixture costs. Also still present: the **stale 2026-07-25 unclaimed appliance** `206c8838…` (code `QWA-WJE`), not mine, not discarded | CC |
 | **R-29** | **The green gates are not enforced anywhere — one was RED for 16 releases before anyone ran it.** This is the **class**, not an instance: a gate that exists, asserts something true, is red, and is invoked by nothing reads as coverage it is not providing. `controller/scripts/docker_run_volume_path_gate.py` failed continuously from **2026-07-14 (v0.129.0)** until R-7b's close-out ran it by hand at v0.145.0 — sixteen releases in which every REPORT said "green" | **READY (S for (a) / M for (b))** | — | **This item has existed at `ROADMAP.md:158` since before the register was rebuilt (2026-07-27) and was never carried across — that omission is itself part of the finding**, because it is an open item *about work not getting done* that then went missing from the page that decides what gets done. Two separable parts, per R-29's own analysis: **(a)** the `docker_run_volume_path_gate` finding is benign and the fix is a 3-line ALLOWLIST addition with its why — **not** a rewrite of the flagged call — and it gets its own reviewed diff, never bundled into a feature commit; **(b)** the systemic half, the real item: decide where gates run (pre-push hook, `build.sh` step, or CI) and make a red gate block the train the way the Go green gate does. **Two further orphans confirmed 2026-07-29** by repo-wide grep across all file types + sibling repos + `~/.claude` settings/skills/hooks + `.git/hooks` (none non-sample) + Makefile/justfile/Taskfile find (only `hub/Makefile`, zero `gate` occurrences) + CI-directory find (**this repo has no CI at all**) — every one of the 19 hits is a docstring, a code comment or prose, and **not one is an invocation**: `scripts/hostinstall_gates.py` — **RED today** (`hub Setup-tab hostInstallVersion=1.19.0 != SCRIPT_VERSION=1.22.0`, exit 1), the same finding as **R-94 leg (b)** — and `scripts/hub_confirm_gate.py`. Of the four gates in `scripts/`, only `site_gates.py` is mandated anywhere (`CLAUDE.md:153`) and `manifest_bearer_gate.py` is named in `runbooks/secrets.md:76`. **In R-29's own words, carried forward deliberately: do not mint a new ID for a new instance** — the 2026-07-18 rehearsal independently re-raised this item and no second ID was minted then either | CC |
 | **R-95** | restic offsite credential **can delete** (`readonly=False`, `forget --prune` runs from the box); SFTP cannot express append-only | **READY** | — | Root exposure still open. Mitigation now ARMED — split prune off-box or move to REST `--append-only` | CC |
 | **R-86** | Restore-tests are interval-scheduled, not backup-aligned | **READY** | R-90 (ep0 headroom) informs cadence | Trigger a tier ~24 h after **its own** newest archive | CC |