R-106 + R-109: the DR recipe records the resolved namespace and names the backup target (v0.118.0)

Both defects were live on both demo boxes: the recipe said namespace "root" while
storage.cfg said demo-felhom/demo-hp, and it never named which of two content=backup
dir storages holds the local archives.

R-106: the namespace came from the listed snapshot, but PBS omits `ns` per item once
the list is namespace-scoped, so it was always empty and normalised to "root". It now
resolves from the pbs STORAGE (storage.cfg's `namespace`) — the same field vzdump makes
PVE read, so the recipe cannot disagree with the backup.

R-109: backup_target resolves from the primary tier of cfg.Backup.BackupTiers(), the
function the scheduler consults, and carries the mountpoint that separates /mnt/hdd_1
from /var/lib/vz. The resolver reports the tier IN EFFECT (daemon-start config), not
agent.json on disk — a target move rewrites the file and deliberately does not restart.

Unresolvable is recorded as unresolvable: resolved|unknown plus a distinct reason,
never a default, an empty string, or a placeholder.

Needs hub v0.83.0 — AssembleDRRecipe allow-lists top-level keys, so backup_target
would otherwise be stored intact and dropped before any operator saw it.

9 tests, 4 red-proofs (each mutation asserted to have landed). Suite rc=0, 29 ok.

REUSE.md

@@ -174,6 +174,14 @@
 - **New privileged host op**: validate args (internal/storage/validate.go style) → exec via `Runner` → add a `Cmnd_Alias` to configs/felhom-agent.sudoers → add a probe vector to internal/capability/manifest.go (so degradation is visible) → ship sudoers with the binary.
 - **New reconcile action**: `ActionKind` + `classOfAction` (internal/reconcile/classify.go), plan emission in internal/reconcile/plan.go; destructive ⇒ gate handles it automatically.
 - **Hub-report field**: extend `hub.HostReport` (internal/hub/report.go) + `Collector` — hub side must mirror + allowlist it (cross-repo).
+- **DR-recipe section (host-half)**: add the field to `DRRecipeHostHalf` (internal/hub/dr_recipe.go) **AND** to
+  the hub's `hostHalfShape` + `AssembledRecipe` (felhom.eu `hub/internal/store/dr_recipe.go`). Those two
+  hub structs are **ALLOW-LISTS**: a section only the agent knows about is stored intact and silently
+  dropped before any operator sees it — that is R-122, which cost `offsite_restic` its entire existence.
+  Then update BOTH copies of `testdata/host-report.golden.json` (byte-identical, cross-repo) and extend
+  `TestAssembleDRRecipe_CarriesEveryEmittedSection`. **A recipe field that cannot be resolved records an
+  explicit unknown with a reason — never a default, an empty string, or a placeholder** (`DRState*` /
+  `DRReason*`); a recipe read during a rebuild must not present a guess as a fact.
 - **Envelope-driven behavior**: implement `hub.EnvelopeObserver`, add to the `MultiObserver` in cmd/felhom-agent/main.go.
 - **Selftest mode**: `selftestFlag` + `runSelftest*` in cmd/felhom-agent/main.go.
 - **Config**: internal/config/config.go (`Load` + `applyEnv` `FELHOM_AGENT_*` overlay; keep secrets out of `Redacted()` output).