diff --git a/hub/CHANGELOG.md b/hub/CHANGELOG.md
index b85b018..e9d311b 100644
--- a/hub/CHANGELOG.md
+++ b/hub/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Felhom Hub — Changelog
 
+## v0.13.1 — DR recipe v1 drive-shape sync: test-data + regression guard only (2026-06-16)
+
+**No behavior change — redeploy optional.** Tracks the agent's v0.39.0 v1 host-half drive shape (which
+dropped `role` + `restic_repo_coord` from `drives[]`). Because the hub reads drives as `json.RawMessage`
+(verbatim passthrough), no store/handler/struct change was needed — only test-data + a regression guard.
+
+- `internal/store/testdata/dr-recipe.golden.json` + the `drHostHalf` test fixture: dropped the `role`
+  key from `drives[0]` to match the v1 shape the agent now emits.
+- `internal/api/testdata/host-report.golden.json`: re-synced to be **byte-identical** with the agent's
+  `internal/hub/testdata/host-report.golden.json` (sha256 `57f2a5e7…18b2f2b5`). The hub copy previously
+  lacked the `dr_recipe` section entirely; it is now a verbatim copy, so the cross-repo golden truly
+  matches and POSTing it through `/host-report` exercises the `SaveDRRecipeHostHalf` ingest path.
+- New `TestAssembleDRRecipe_V1DriveShape` — the regression guard: a stored host half whose `drives[]`
+  carry NEITHER dropped field but WHICH HAS a `pbs` block assembles cleanly (pbs carried through, drives
+  passed through verbatim, neither `role` nor `restic_repo_coord` present). Demonstrated to FAIL when the
+  fixture re-adds `role`, then reverted.
+
 ## v0.13.0 — DR recipe: assemble + store + view the secret-free reconstruction recipe (2026-06-16)
 
 **DR recipe slice (hub half)** — the assemble-store-view side of the secret-free reconstruction recipe
diff --git a/hub/internal/api/testdata/host-report.golden.json b/hub/internal/api/testdata/host-report.golden.json
index 7309266..16832c1 100644
--- a/hub/internal/api/testdata/host-report.golden.json
+++ b/hub/internal/api/testdata/host-report.golden.json
@@ -131,5 +131,28 @@
     }
   ],
   "cloudflared": { "status": "active" },
-  "audit_tail": []
+  "audit_tail": [],
+  "dr_recipe": {
+    "recipe_version": 1,
+    "guests": [
+      { "vmid": 100, "cores": 2, "memory_bytes": 2147483648, "disk_bytes": 21474836480 }
+    ],
+    "pbs": {
+      "repo_id": "felhom-pbs",
+      "namespace": "root",
+      "latest_snapshot_id": "9001"
+    },
+    "drives": [
+      {
+        "durable_id": "uuid:0fc63daf-8483-4772-8e79-3d69d8477de4",
+        "mount_path": "/mnt/usb-backup",
+        "intent": "enrolled",
+        "total_bytes": 2000000000000
+      }
+    ],
+    "pve_storage": [
+      { "name": "local-lvm", "type": "lvmthin", "content": "rootdir,images" },
+      { "name": "usb-backup", "type": "usb", "content": "backup" }
+    ]
+  }
 }
diff --git a/hub/internal/store/dr_recipe_test.go b/hub/internal/store/dr_recipe_test.go
index 7048e1e..205bafb 100644
--- a/hub/internal/store/dr_recipe_test.go
+++ b/hub/internal/store/dr_recipe_test.go
@@ -16,7 +16,7 @@ const drHostHalf = `{
   "recipe_version": 1,
   "guests": [ { "vmid": 9201, "cores": 4, "memory_bytes": 12884901888, "disk_bytes": 34359738368 } ],
   "pbs": { "repo_id": "felhom-pbs", "namespace": "root", "latest_snapshot_id": "9201" },
-  "drives": [ { "durable_id": "uuid:da9e7089-cf8e-4617-adcb-a377743fae00", "role": "bulk-data", "mount_path": "/mnt/felhom-usb", "intent": "enrolled", "total_bytes": 1000000000000 } ],
+  "drives": [ { "durable_id": "uuid:da9e7089-cf8e-4617-adcb-a377743fae00", "mount_path": "/mnt/felhom-usb", "intent": "enrolled", "total_bytes": 1000000000000 } ],
   "pve_storage": [ { "name": "local-lvm", "type": "lvmthin", "content": "rootdir,images" }, { "name": "felhom-usb", "type": "usb", "content": "backup" } ]
 }`
 
@@ -104,6 +104,35 @@ func TestAssembleDRRecipe_MatchesGolden(t *testing.T) {
 	}
 }
 
+// TestAssembleDRRecipe_V1DriveShape is the regression guard for the v1 host-half drive shape
+// (agent v0.39.0 dropped role + restic_repo_coord): a stored host half whose drives carry NEITHER
+// field, but WHICH HAS a pbs block, must assemble cleanly — pbs present, drives passed through
+// verbatim (RawMessage passthrough means the hub needs no struct change for the dropped fields).
+func TestAssembleDRRecipe_V1DriveShape(t *testing.T) {
+	const v1Host = `{
+	  "recipe_version": 1,
+	  "guests": [ { "vmid": 9201, "cores": 4, "memory_bytes": 12884901888, "disk_bytes": 34359738368 } ],
+	  "pbs": { "repo_id": "felhom-pbs", "namespace": "root", "latest_snapshot_id": "9201" },
+	  "drives": [ { "durable_id": "uuid:da9e7089", "mount_path": "/mnt/felhom-usb", "intent": "enrolled", "total_bytes": 1000000000000 } ],
+	  "pve_storage": [ { "name": "felhom-usb", "type": "usb", "content": "backup" } ]
+	}`
+	asm, err := AssembleDRRecipe(&DRRecipe{CustomerID: "c", RecipeVersion: 1, HostHalfJSON: v1Host})
+	if err != nil {
+		t.Fatalf("v1 host half failed to assemble: %v", err)
+	}
+	// pbs must survive the stitch.
+	if !jsonContains(t, asm.PBS, "felhom-pbs") || !jsonContains(t, asm.PBS, "9201") {
+		t.Errorf("pbs coord not carried through assembly: %s", asm.PBS)
+	}
+	// drives passed through verbatim, and carry NEITHER dropped field.
+	if !jsonContains(t, asm.Drives, "uuid:da9e7089") {
+		t.Errorf("drives not passed through: %s", asm.Drives)
+	}
+	if strings.Contains(string(asm.Drives), "role") || strings.Contains(string(asm.Drives), "restic_repo_coord") {
+		t.Errorf("v1 drives must not carry role/restic_repo_coord: %s", asm.Drives)
+	}
+}
+
 // TestAssembleDRRecipe_IgnoreUnknownAndVersionSkew: a half carrying an UNKNOWN top-level field and a
 // HIGHER recipe_version still assembles (forward-compat), and recipe_version reflects the max.
 func TestAssembleDRRecipe_IgnoreUnknownAndVersionSkew(t *testing.T) {
diff --git a/hub/internal/store/testdata/dr-recipe.golden.json b/hub/internal/store/testdata/dr-recipe.golden.json
index e2b4346..42cd50c 100644
--- a/hub/internal/store/testdata/dr-recipe.golden.json
+++ b/hub/internal/store/testdata/dr-recipe.golden.json
@@ -8,7 +8,6 @@
   "drives": [
     {
       "durable_id": "uuid:da9e7089-cf8e-4617-adcb-a377743fae00",
-      "role": "bulk-data",
       "mount_path": "/mnt/felhom-usb",
       "intent": "enrolled",
       "total_bytes": 1000000000000