D5 SHIPPED: Tier-1/2 restore no longer depends on the whole-guest tier

Records controller v0.188.0 across the four coupled artifacts.

07-backup-architecture.md is the owning doc:
- new 7.4 = the recovery chain AFTER D5 (7.1 leg 1 superseded; leg 2,
  the living-app dependency, explicitly unchanged so this is not read
  as more than it is)
- 7.3 collapsed to history, with the correction that the target as
  written (data_key-only) was tested in Part 0 and rejected
- 3 records that the two-lane split is now real, not just intended
- matrix rows 3 / 3c (new) / 13; 10.1 D5 itself shipped

Also: new capability-map row, D5 collapsed in ROADMAP + OPEN-ITEMS,
and R-127 filed in both (data_key flag unreliable; O4 can regenerate a
DB password that no longer matches the restored data directory).

The audit is named D5-drive-alone-restore rather than "...secrets..."
because .gitignore blocks *secret* -- a guard worth respecting, not
forcing past.

documentation/architecture/00-capability-map.md

@@ -96,6 +96,7 @@
 | Data migration between drives (all / per-app), crash-safe | controller | **PROVEN-LIVE** | `CAMPAIGN-6C` 4P-5 (scope=app round-trip, byte-identical); `storage-lifecycle-acceptance-2026-06-15` (two migrate-all runs via dashboard UI, sha256 byte-identical) | (Cited `CAMPAIGN-2` T-STG-MIGRATE-* were auth-hollow.) "crash-safe" is design-level (copy→verify→remove) — no clean live crash-during-migration PASS |
 | NAS (NFS/SMB-client) verify-before-commit, uid-1000 probe, categorized Hungarian errors, DSM-validated | controller v0.113–117, agent v0.81/84/85 | **PROVEN-LIVE** | `SPIKE-nas-verify-2026-07-11`, `SPIKE-nas-dsm-2026-07-11`, `CAMPAIGN-3-2026-07-11` (boot/reassert fixes) | |
 | **Network storage (NAS) is browse + bulk-media only — it may NOT host an app's data namespace** | controller v0.187.0 | **PROVEN-LIVE** (2026-07-30) | `audits/R108-network-app-namespace-2026-07-30.md`. Same-box before/after on demo-felhom through the exact endpoint the UI invokes (`POST /api/storage/migrate-app`, authenticated + CSRF): **pre-fix v0.186.0** the target was never examined — both a NAS-shaped and an unregistered path passed straight into `MigrateApp` and failed only on the app name (409); **post-fix v0.187.0** both are refused 400 with a Hungarian reason, while a real local drive still reaches `MigrateApp` (409) proving the guard is not over-broad. On demo-hp (the box with a REGISTERED share) the network-specific refusal fires. Non-effect verified in the registry: no `migrated_to`, nothing decommissioned, app `HDD_PATH` unchanged, no `backups/` on the share | **Closes R-108 and UNBLOCKS D5** (`07-backup-architecture.md` §7.3, §10.1). The share-root `:rslave` FileBrowser bind is deliberately UNCHANGED — load-bearing for automount wake, and unscopable — verified byte-identical by diffing demo-hp's generated compose before/after. Fails closed: `/mnt/felhom-drives` holds both kinds, so an unregistered path under it is un-classifiable and refused. **Not exercised:** the deploy POST and decommission-migrate refusals are unit-tested (non-effect, nil `stackMgr`) but were NOT live-fired — only migrate-app was. `.fab`-export-onto-NAS remains open (→ R-126) |
+| **A Tier-1/Tier-2 app restore works from the DRIVE ALONE — the recovery unit carries the app's secrets (D5)** | controller v0.188.0 | **PROVEN-LIVE** (2026-07-30) | `audits/D5-drive-alone-restore-2026-07-30.md`, `07-backup-architecture.md` §7.4. On a scratch drill guest on felhom-pve, through the real endpoints (`POST /api/stacks/{app}/deploy` → `POST /api/backup/run` → `POST /backup/restore`): AdventureLog (`SECRET_KEY` **data_key** + `DB_PASSWORD`) restored with the guest's `app.yaml` **moved aside** → `secrets recovered=2/2`, **27.6 s**, `Restore-from-unit completed`. **The observable is the DATA, not the exit code:** the app itself then read the seeded customer row **over TCP with its own credential** (`connected_as=adventurelog over_TCP=True`), 51 Django tables intact, and the discriminator held — the pre-backup row returned while a row added AFTER the backup was gone, so the volume tar was genuinely restored. The unit held **no `.sql` dump**, so the DB came back from the volume tar, which is exactly the case a regenerated password would have broken. **The withheld half is proven too:** Grafana's `type: password` admin login was live in its container and `ENC:` in the guest, yet appeared in **0 files** anywhere under the backup namespace, and the unit's app.yaml header names it as withheld | **Ruling (operator, 2026-07-30): `type: secret` travels, `type: password` NEVER does, minus the `nonPortableSecrets` code register (`vaultwarden/ADMIN_TOKEN`).** Plaintext on the drive, like the data — defensible **only because** the internet-reachable class is withheld; the two are coupled and must not be relaxed independently. **The brief's own proposal (data_key-only) was tested and rejected:** the flag is unreliable (4 encryption keys the catalog itself labels as such are unflagged → **R-127**) and a DB password is not resettable in practice (`POSTGRES_PASSWORD` is ignored once PGDATA is non-empty). Precedence: **the unit wins** over the guest, because the unit's secrets match the data being restored. The fail-closed data-key gate is UNCHANGED. **Not exercised live:** the withheld-class O4 regeneration on restore, and Tier-2's own cross-drive copy of a secret-bearing unit (both unit-tested only). Venue was a **fixture-class scratch guest**, correct per `runbooks/target-selection.md` since D5's claim is about restore CODE, not the install path |
 | USB drive enrollment + unplug detection + recommission | controller, agent | **PROVEN-LIVE** | `storage-lifecycle-acceptance-2026-06-15` E4 (yanked-while-running → agent auto-rebind) + E10 (re-enroll, data intact); `CAMPAIGN-4`/`6A` (3 USB re-establish across device-letter reshuffle) | (Cited `RUNBOOK-usb` could NOT complete a wizard enrollment; `CAMPAIGN-2` legs were auth-hollow.) Fresh-USB **wizard enrollment** specifically still unproven |
 | Decommission (migrate-first and anyway-paths), eject | agent, controller | **PROVEN-LIVE** | `storage-lifecycle-acceptance-2026-06-15` E9 (decommission-anyway → bind detached, parent mp untouched, reboot-safe) + E12 (eject drive holding all apps) | (Cited `CAMPAIGN-2` T-STG-DECOM-* were auth-hollow; `SPIKE-decommission` was report-only, button still vestigial.) |
 | Boot ordering: automount + networking survive reboot; appliance self-heal watchdog | agent v0.85 | **PROVEN-LIVE** | `CAMPAIGN-4-2026-07-13` (F12 fix HOLDS: demo-host reboot + 5-boot storm, 0 ordering cycles, caps 63/63, WG re-handshake) + `CAMPAIGN-6A-2026-07-14` 1D (re-arm reboot-survival across 9 guest + 1 host reboots) | (`CAMPAIGN-3` F10/F11/F12 were the CRITICAL/HIGH *failures*; fixes shipped in agent v0.85 and were re-validated live in 4/6A — cite the validation, not the finding.) Residual: `skip-active` on `pct reboot` carried by the heal path; a NAS outage spanning a guest reboot can strand the share until agent restart (6A) |