deploy: register Manager v6 favicon release

infra/deploy-runner/nodedc-deploy

@@ -66,6 +66,14 @@ PROXY_CONTUR_ENV_FILE = Path("/volume1/docker/proxy-contur/.env")
 DC_AMD_PROXY_RUNTIME_DIR = Path("/volume1/docker/dc-amd-proxy/runtime")
 DEVICE_PLANE_ROOT = Path("/volume1/docker/nodedc-device-plane")
 DEVICE_PLANE_SECRET_DIR = DEVICE_PLANE_ROOT / "secrets"
+DEVICE_PLANE_MANAGER_DATA_DIR = DEVICE_PLANE_ROOT / "data" / "device-manager"
+DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR = "/var/lib/nodedc-device-manager"
+DEVICE_PLANE_MANAGER_PRESENTATION_PATH = (
+    f"{DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR}/device-manager-presentation.json"
+)
+DEVICE_PLANE_MANAGER_MEDIA_ROOT = (
+    f"{DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR}/media"
+)
 DEVICE_PLANE_POSTGRES_PASSWORD_FILE = DEVICE_PLANE_SECRET_DIR / "postgres-password"
 DEVICE_PLANE_GATEWAY_CORE_TOKEN_FILE = DEVICE_PLANE_SECRET_DIR / "gateway-core-token"
 DEVICE_PLANE_IDENTIFIER_PEPPER_FILE = DEVICE_PLANE_SECRET_DIR / "identifier-pepper"
@@ -249,6 +257,15 @@ DEVICE_PLANE_MANAGER_RELEASE_V2_REL = (
 DEVICE_PLANE_MANAGER_RELEASE_V3_REL = (
     "deployment/device-manager-release-v3.json"
 )
+DEVICE_PLANE_MANAGER_RELEASE_V4_REL = (
+    "deployment/device-manager-release-v4.json"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V5_REL = (
+    "deployment/device-manager-release-v5.json"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V6_REL = (
+    "deployment/device-manager-release-v6.json"
+)
 DEVICE_PLANE_MANAGER_COMPOSE_REL = "docker-compose.device-manager.yml"
 DEVICE_PLANE_EDGE_CORE_CHANNEL_BOOTSTRAP_REL = (
     "deployment/device-edge-core-channel-bootstrap-v1.json"
@@ -345,10 +362,10 @@ DEVICE_PLANE_CONTROL_CORE_RELEASE_FIRST_PREDECESSOR_ARTIFACT_SHA256 = (
     "c10d5b6b7d55ab239f85b6c8130e34ce9f84985e3b46e6e5534733156c7982fc"
 )
 DEVICE_PLANE_MANAGER_RELEASE_V3_CONTROL_CORE_PREDECESSOR_PATCH_ID = (
-    "device-control-core-release-v2-20260813-028"
+    "device-control-core-release-v2-20260821-030"
 )
 DEVICE_PLANE_MANAGER_RELEASE_V3_CONTROL_CORE_PREDECESSOR_ARTIFACT_SHA256 = (
-    "816ef07fd81923328c3ff54d833dcc49f873aef13256259ae4f66061e7453635"
+    "8459521a662541a5a87cb0188991cdcfb51727427db8ec2a232ce4846bfc3454"
 )
 DEVICE_PLANE_MANAGER_RELEASE_V3_EDGE_CHANNEL_PREDECESSOR_PATCH_ID = (
     "device-edge-core-channel-upgrade-v4-20260812-023"
@@ -356,6 +373,24 @@ DEVICE_PLANE_MANAGER_RELEASE_V3_EDGE_CHANNEL_PREDECESSOR_PATCH_ID = (
 DEVICE_PLANE_MANAGER_RELEASE_V3_EDGE_CHANNEL_PREDECESSOR_ARTIFACT_SHA256 = (
     "c10d5b6b7d55ab239f85b6c8130e34ce9f84985e3b46e6e5534733156c7982fc"
 )
+DEVICE_PLANE_MANAGER_RELEASE_V4_PREDECESSOR_PATCH_ID = (
+    "device-manager-release-v3-20260822-032"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V4_PREDECESSOR_ARTIFACT_SHA256 = (
+    "6e0eb3a0a6f19ceab92d46832b93bffbcea21247dbdc2ea50625a51ff460e4ca"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V5_PREDECESSOR_PATCH_ID = (
+    "device-manager-release-v4-20260822-033"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V5_PREDECESSOR_ARTIFACT_SHA256 = (
+    "52ba322042f1e4f595bbfea99f8bb35630b15984e0da648dc55348bc9e5b2066"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V6_PREDECESSOR_PATCH_ID = (
+    "device-manager-release-v5-20260822-034"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V6_PREDECESSOR_ARTIFACT_SHA256 = (
+    "acc1d2ae2cda66861054826928c25d01a2428e688cc8132a9c381831bf29ab5a"
+)
 DEVICE_PLANE_EDGE_CORE_CHANNEL_BOOTSTRAP_PREDECESSOR_PATCH_ID = (
     "device-edge-core-channel-bootstrap-20260812-018"
 )
@@ -414,6 +449,38 @@ DEVICE_PLANE_EDGE_CORE_CHANNEL_INVALID_CERTIFICATE_FINGERPRINT = (
 DEVICE_PLANE_MANAGER_RELEASE_V1_COMPOSE_SHA256 = (
     "4954120aaddc999798b64c304d8cf692b79714feb727d873117bd1f3434e865e"
 )
+DEVICE_PLANE_MANAGER_RELEASE_V4_COMPOSE_SHA256 = (
+    "e7dff0f5873ad4586bd55946d3db2bb86092a5e149e886d120adc041e056c256"
+)
+DEVICE_PLANE_MANAGER_RELEASE_V5_COMPOSE_SHA256 = (
+    DEVICE_PLANE_MANAGER_RELEASE_V4_COMPOSE_SHA256
+)
+DEVICE_PLANE_MANAGER_RELEASE_V6_COMPOSE_SHA256 = (
+    DEVICE_PLANE_MANAGER_RELEASE_V5_COMPOSE_SHA256
+)
+DEVICE_PLANE_MANAGER_FAVICON_SHA256 = {
+    "favicon.ico": (
+        "f8933114a85646335ea5c94944f56d3cd8c48a6032016719f7905ff244ec0aa2"
+    ),
+    "favicon/favicon.ico": (
+        "f8933114a85646335ea5c94944f56d3cd8c48a6032016719f7905ff244ec0aa2"
+    ),
+    "favicon/icon-adaptive.svg": (
+        "481984e83997d786bb0a72ad1ee80037db13aef3a0792ab3109df95c2199b38e"
+    ),
+    "favicon/apple-touch-icon.png": (
+        "afdccc28152a566e264e533ca218362f05d5bcec936c647f9a54f414c0bd4763"
+    ),
+    "favicon/icon-192.png": (
+        "5b10a24feb4754f15c69761cef42f91a01f885d04095156b1a12e254875fdd4d"
+    ),
+    "favicon/icon-512.png": (
+        "f98bac3dba59b7eefbe89f8bb8abc25567226a54ab7ed3b6b1a4caffbdd9ee15"
+    ),
+    "favicon/manifest.webmanifest.json": (
+        "2a8ecdc6e6c64833f812ae02bbc0c7bd9b435e0cfa75cc21d6edf054d41275fc"
+    ),
+}
 DEVICE_PLANE_MANAGER_RELEASE_V2_COMPOSE_SHA256 = (
     "369a2acf9c1a1030b9e1c6c366144b1eaf8900aef0ee59bb6bf23250b7b371b9"
 )
@@ -492,6 +559,21 @@ DEVICE_PLANE_MANAGER_RELEASE_V3_ENTRIES = (
     "services/device-manager",
     DEVICE_PLANE_MANAGER_RELEASE_V3_REL,
 )
+DEVICE_PLANE_MANAGER_RELEASE_V4_ENTRIES = (
+    DEVICE_PLANE_MANAGER_COMPOSE_REL,
+    "services/device-manager",
+    DEVICE_PLANE_MANAGER_RELEASE_V4_REL,
+)
+DEVICE_PLANE_MANAGER_RELEASE_V5_ENTRIES = (
+    DEVICE_PLANE_MANAGER_COMPOSE_REL,
+    "services/device-manager",
+    DEVICE_PLANE_MANAGER_RELEASE_V5_REL,
+)
+DEVICE_PLANE_MANAGER_RELEASE_V6_ENTRIES = (
+    DEVICE_PLANE_MANAGER_COMPOSE_REL,
+    "services/device-manager",
+    DEVICE_PLANE_MANAGER_RELEASE_V6_REL,
+)
 DEVICE_PLANE_MANAGER_RECONCILIATION_REL = (
     "deployment/device-manager-control-plane-reconciliation-v1.json"
 )
@@ -3922,6 +4004,9 @@ def allowed_payload_path(component, rel):
             DEVICE_PLANE_MANAGER_CONTROL_PLANE_REL,
             DEVICE_PLANE_MANAGER_RELEASE_V2_REL,
             DEVICE_PLANE_MANAGER_RELEASE_V3_REL,
+            DEVICE_PLANE_MANAGER_RELEASE_V4_REL,
+            DEVICE_PLANE_MANAGER_RELEASE_V5_REL,
+            DEVICE_PLANE_MANAGER_RELEASE_V6_REL,
             DEVICE_PLANE_EDGE_CORE_CHANNEL_BOOTSTRAP_REL,
             DEVICE_PLANE_EDGE_CORE_CHANNEL_UPGRADE_REL,
             DEVICE_PLANE_EDGE_CORE_CHANNEL_UPGRADE_V2_REL,
@@ -9494,6 +9579,9 @@ def is_device_plane_manager_control_plane_slice(component, entries):
             DEVICE_PLANE_MANAGER_RELEASE_V1_SUCCESSOR_ENTRIES,
             DEVICE_PLANE_MANAGER_RELEASE_V2_ENTRIES,
             DEVICE_PLANE_MANAGER_RELEASE_V3_ENTRIES,
+            DEVICE_PLANE_MANAGER_RELEASE_V4_ENTRIES,
+            DEVICE_PLANE_MANAGER_RELEASE_V5_ENTRIES,
+            DEVICE_PLANE_MANAGER_RELEASE_V6_ENTRIES,
         )
     )
 
@@ -9514,6 +9602,45 @@ def is_device_plane_manager_release_v3_slice(component, entries):
     )
 
 
+def is_device_plane_manager_release_v4_slice(component, entries):
+    return (
+        component == "device-plane"
+        and entries is not None
+        and tuple(entries) == DEVICE_PLANE_MANAGER_RELEASE_V4_ENTRIES
+    )
+
+
+def is_device_plane_manager_release_v5_slice(component, entries):
+    return (
+        component == "device-plane"
+        and entries is not None
+        and tuple(entries) == DEVICE_PLANE_MANAGER_RELEASE_V5_ENTRIES
+    )
+
+
+def is_device_plane_manager_release_v6_slice(component, entries):
+    return (
+        component == "device-plane"
+        and entries is not None
+        and tuple(entries) == DEVICE_PLANE_MANAGER_RELEASE_V6_ENTRIES
+    )
+
+
+def is_device_plane_manager_persistent_release_slice(component, entries):
+    return (
+        is_device_plane_manager_release_v4_slice(component, entries)
+        or is_device_plane_manager_release_v5_slice(component, entries)
+        or is_device_plane_manager_release_v6_slice(component, entries)
+    )
+
+
+def is_device_plane_manager_only_release_slice(component, entries):
+    return (
+        is_device_plane_manager_release_v3_slice(component, entries)
+        or is_device_plane_manager_persistent_release_slice(component, entries)
+    )
+
+
 def is_device_plane_edge_core_channel_bootstrap_slice(component, entries):
     return (
         component == "device-plane"
@@ -9702,6 +9829,59 @@ def expected_device_plane_manager_release_v3_boundaries():
     }
 
 
+def expected_device_plane_manager_release_v4_boundaries():
+    return {
+        **expected_device_plane_manager_release_v3_boundaries(),
+        "predecessor": {
+            "kind": "release",
+            "patchId": DEVICE_PLANE_MANAGER_RELEASE_V4_PREDECESSOR_PATCH_ID,
+            "artifactSha256": (
+                DEVICE_PLANE_MANAGER_RELEASE_V4_PREDECESSOR_ARTIFACT_SHA256
+            ),
+        },
+        "healthGate": "bounded-container-grace+core-contract+persistent-data",
+        "presentationPersistence": "runner-managed-host-data-bind",
+        "presentationDataHostPath": str(DEVICE_PLANE_MANAGER_DATA_DIR),
+        "presentationDataContainerPath": DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR,
+        "presentationDataOwnership": "uid-1000-gid-1000-mode-0750",
+        "presentationDataLifecycle": (
+            "preserve-across-manager-recreate-and-source-rollback"
+        ),
+        "presentationPath": DEVICE_PLANE_MANAGER_PRESENTATION_PATH,
+        "mediaRoot": DEVICE_PLANE_MANAGER_MEDIA_ROOT,
+        "defaultAccentHex": "#f5f5f5",
+        "rollback": "restore-preapply-snapshot-preserve-manager-data",
+    }
+
+
+def expected_device_plane_manager_release_v5_boundaries():
+    return {
+        **expected_device_plane_manager_release_v4_boundaries(),
+        "predecessor": {
+            "kind": "release",
+            "patchId": DEVICE_PLANE_MANAGER_RELEASE_V5_PREDECESSOR_PATCH_ID,
+            "artifactSha256": (
+                DEVICE_PLANE_MANAGER_RELEASE_V5_PREDECESSOR_ARTIFACT_SHA256
+            ),
+        },
+        "overviewLayout": "mission-core-landing-stage-v1",
+    }
+
+
+def expected_device_plane_manager_release_v6_boundaries():
+    return {
+        **expected_device_plane_manager_release_v5_boundaries(),
+        "predecessor": {
+            "kind": "release",
+            "patchId": DEVICE_PLANE_MANAGER_RELEASE_V6_PREDECESSOR_PATCH_ID,
+            "artifactSha256": (
+                DEVICE_PLANE_MANAGER_RELEASE_V6_PREDECESSOR_ARTIFACT_SHA256
+            ),
+        },
+        "faviconSet": "nodedc-adaptive-v1",
+    }
+
+
 def expected_device_plane_manager_release_boundaries():
     # Compatibility name for the current release builder/tests. Immutable v1
     # predecessors always use expected_device_plane_manager_release_v1_boundaries.
@@ -10216,6 +10396,21 @@ def validate_device_plane_manager_release_payload_contract(
             "device-edge-channel/peers",
             "name: nodedc-device-plane-egress",
         ))
+    if schema_version in (
+        "nodedc.device-plane.device-manager-release.v4",
+        "nodedc.device-plane.device-manager-release.v5",
+        "nodedc.device-plane.device-manager-release.v6",
+    ):
+        required_compose.extend((
+            "NODEDC_DEVICE_MANAGER_PRESENTATION_PATH: "
+            f"{DEVICE_PLANE_MANAGER_PRESENTATION_PATH}",
+            "NODEDC_DEVICE_MANAGER_MEDIA_ROOT: "
+            f"{DEVICE_PLANE_MANAGER_MEDIA_ROOT}",
+            f"source: {DEVICE_PLANE_MANAGER_DATA_DIR}",
+            f"target: {DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR}",
+            "read_only: false",
+            "create_host_path: false",
+        ))
     for required in required_compose:
         if required not in compose:
             die(f"Device Manager control-plane boundary missing: {required}")
@@ -10277,6 +10472,88 @@ def validate_device_plane_manager_release_v3_payload(
     )
 
 
+def validate_device_plane_manager_release_v4_payload(
+    payload_dir,
+    *,
+    expected_release_id=None,
+):
+    return validate_device_plane_manager_release_payload_contract(
+        payload_dir,
+        descriptor_rel=DEVICE_PLANE_MANAGER_RELEASE_V4_REL,
+        schema_version="nodedc.device-plane.device-manager-release.v4",
+        boundaries=expected_device_plane_manager_release_v4_boundaries(),
+        compose_sha256=DEVICE_PLANE_MANAGER_RELEASE_V4_COMPOSE_SHA256,
+        edge_channel=False,
+        expected_release_id=expected_release_id,
+    )
+
+
+def validate_device_plane_manager_release_v5_payload(
+    payload_dir,
+    *,
+    expected_release_id=None,
+):
+    return validate_device_plane_manager_release_payload_contract(
+        payload_dir,
+        descriptor_rel=DEVICE_PLANE_MANAGER_RELEASE_V5_REL,
+        schema_version="nodedc.device-plane.device-manager-release.v5",
+        boundaries=expected_device_plane_manager_release_v5_boundaries(),
+        compose_sha256=DEVICE_PLANE_MANAGER_RELEASE_V5_COMPOSE_SHA256,
+        edge_channel=False,
+        expected_release_id=expected_release_id,
+    )
+
+
+def validate_device_plane_manager_v6_favicon_bundle(payload_dir):
+    dist = payload_dir / "services/device-manager/dist"
+    for relative_path, expected_sha256 in (
+        DEVICE_PLANE_MANAGER_FAVICON_SHA256.items()
+    ):
+        path = dist / relative_path
+        if (
+            not path.is_file()
+            or path.is_symlink()
+            or sha256_file(path) != expected_sha256
+        ):
+            die(
+                "Device Manager canonical favicon mismatch: "
+                f"{relative_path}"
+            )
+    index_path = dist / "index.html"
+    if not index_path.is_file() or index_path.is_symlink():
+        die("Device Manager favicon HTML entrypoint mismatch")
+    index_html = index_path.read_text(encoding="utf-8")
+    for required_link in (
+        'href="/favicon/icon-adaptive.svg"',
+        'href="/favicon/favicon.ico"',
+        'href="/favicon/apple-touch-icon.png"',
+        'href="/favicon/icon-192.png"',
+        'href="/favicon/icon-512.png"',
+        'href="/favicon/manifest.webmanifest.json"',
+    ):
+        if required_link not in index_html:
+            die(f"Device Manager favicon link missing: {required_link}")
+    return "nodedc-adaptive-v1"
+
+
+def validate_device_plane_manager_release_v6_payload(
+    payload_dir,
+    *,
+    expected_release_id=None,
+):
+    descriptor = validate_device_plane_manager_release_payload_contract(
+        payload_dir,
+        descriptor_rel=DEVICE_PLANE_MANAGER_RELEASE_V6_REL,
+        schema_version="nodedc.device-plane.device-manager-release.v6",
+        boundaries=expected_device_plane_manager_release_v6_boundaries(),
+        compose_sha256=DEVICE_PLANE_MANAGER_RELEASE_V6_COMPOSE_SHA256,
+        edge_channel=False,
+        expected_release_id=expected_release_id,
+    )
+    validate_device_plane_manager_v6_favicon_bundle(payload_dir)
+    return descriptor
+
+
 def validate_device_plane_manager_release_payload(
     payload_dir,
     *,
@@ -10285,12 +10562,30 @@ def validate_device_plane_manager_release_payload(
     v1 = payload_dir / DEVICE_PLANE_MANAGER_CONTROL_PLANE_REL
     v2 = payload_dir / DEVICE_PLANE_MANAGER_RELEASE_V2_REL
     v3 = payload_dir / DEVICE_PLANE_MANAGER_RELEASE_V3_REL
+    v4 = payload_dir / DEVICE_PLANE_MANAGER_RELEASE_V4_REL
+    v5 = payload_dir / DEVICE_PLANE_MANAGER_RELEASE_V5_REL
+    v6 = payload_dir / DEVICE_PLANE_MANAGER_RELEASE_V6_REL
     present = [
-        path for path in (v1, v2, v3)
+        path for path in (v1, v2, v3, v4, v5, v6)
         if path.exists() or path.is_symlink()
     ]
     if len(present) != 1:
         die("Device Manager release descriptor cardinality mismatch")
+    if present[0] == v6:
+        return validate_device_plane_manager_release_v6_payload(
+            payload_dir,
+            expected_release_id=expected_release_id,
+        )
+    if present[0] == v5:
+        return validate_device_plane_manager_release_v5_payload(
+            payload_dir,
+            expected_release_id=expected_release_id,
+        )
+    if present[0] == v4:
+        return validate_device_plane_manager_release_v4_payload(
+            payload_dir,
+            expected_release_id=expected_release_id,
+        )
     if present[0] == v3:
         return validate_device_plane_manager_release_v3_payload(
             payload_dir,
@@ -10568,6 +10863,9 @@ def installed_device_plane_manager_compose_sha256():
     v1 = root / DEVICE_PLANE_MANAGER_CONTROL_PLANE_REL
     v2 = root / DEVICE_PLANE_MANAGER_RELEASE_V2_REL
     v3 = root / DEVICE_PLANE_MANAGER_RELEASE_V3_REL
+    v4 = root / DEVICE_PLANE_MANAGER_RELEASE_V4_REL
+    v5 = root / DEVICE_PLANE_MANAGER_RELEASE_V5_REL
+    v6 = root / DEVICE_PLANE_MANAGER_RELEASE_V6_REL
 
     # A successful v2 overlay intentionally leaves the immutable v1 release
     # descriptor as predecessor evidence. Prefer the highest installed
@@ -10575,6 +10873,45 @@ def installed_device_plane_manager_compose_sha256():
     # the generation-specific Compose digest. During a failed v2 apply,
     # rollback removes the candidate-only v2 descriptor before rebuilding the
     # restored v1 runtime, so the same lookup follows the restored source.
+    if v6.exists() or v6.is_symlink():
+        descriptor = read_strict_json(
+            v6,
+            "installed Device Manager release v6 descriptor",
+            max_bytes=16 * 1024,
+        )
+        validate_device_plane_manager_release_descriptor(
+            descriptor,
+            schema_version="nodedc.device-plane.device-manager-release.v6",
+            boundaries=expected_device_plane_manager_release_v6_boundaries(),
+        )
+        return DEVICE_PLANE_MANAGER_RELEASE_V6_COMPOSE_SHA256
+
+    if v5.exists() or v5.is_symlink():
+        descriptor = read_strict_json(
+            v5,
+            "installed Device Manager release v5 descriptor",
+            max_bytes=16 * 1024,
+        )
+        validate_device_plane_manager_release_descriptor(
+            descriptor,
+            schema_version="nodedc.device-plane.device-manager-release.v5",
+            boundaries=expected_device_plane_manager_release_v5_boundaries(),
+        )
+        return DEVICE_PLANE_MANAGER_RELEASE_V5_COMPOSE_SHA256
+
+    if v4.exists() or v4.is_symlink():
+        descriptor = read_strict_json(
+            v4,
+            "installed Device Manager release v4 descriptor",
+            max_bytes=16 * 1024,
+        )
+        validate_device_plane_manager_release_descriptor(
+            descriptor,
+            schema_version="nodedc.device-plane.device-manager-release.v4",
+            boundaries=expected_device_plane_manager_release_v4_boundaries(),
+        )
+        return DEVICE_PLANE_MANAGER_RELEASE_V4_COMPOSE_SHA256
+
     if v3.exists() or v3.is_symlink():
         descriptor = read_strict_json(
             v3,
@@ -12089,8 +12426,11 @@ def validate_device_plane_manager_reconciliation_evidence(payload_dir):
 
 
 def validate_device_plane_manager_v3_active_baseline(descriptor):
-    if descriptor.get("schemaVersion") != (
+    if descriptor.get("schemaVersion") not in (
-        "nodedc.device-plane.device-manager-release.v3"
+        "nodedc.device-plane.device-manager-release.v3",
+        "nodedc.device-plane.device-manager-release.v4",
+        "nodedc.device-plane.device-manager-release.v5",
+        "nodedc.device-plane.device-manager-release.v6",
     ):
         return None
 
@@ -12235,8 +12575,11 @@ def validate_device_plane_manager_v3_active_baseline(descriptor):
 
 
 def device_plane_manager_preserved_runtime_health_services(descriptor):
-    if descriptor.get("schemaVersion") == (
+    if descriptor.get("schemaVersion") in (
-        "nodedc.device-plane.device-manager-release.v3"
+        "nodedc.device-plane.device-manager-release.v3",
+        "nodedc.device-plane.device-manager-release.v4",
+        "nodedc.device-plane.device-manager-release.v5",
+        "nodedc.device-plane.device-manager-release.v6",
     ):
         return (
             "device-control-core",
@@ -12368,6 +12711,9 @@ def validate_device_plane_manager_activation_predecessor(
                     DEVICE_PLANE_MANAGER_RELEASE_V1_SUCCESSOR_ENTRIES,
                     DEVICE_PLANE_MANAGER_RELEASE_V2_ENTRIES,
                     DEVICE_PLANE_MANAGER_RELEASE_V3_ENTRIES,
+                    DEVICE_PLANE_MANAGER_RELEASE_V4_ENTRIES,
+                    DEVICE_PLANE_MANAGER_RELEASE_V5_ENTRIES,
+                    DEVICE_PLANE_MANAGER_RELEASE_V6_ENTRIES,
                 )
             ):
                 die("Device Manager release predecessor type mismatch")
@@ -12382,6 +12728,12 @@ def validate_device_plane_manager_activation_predecessor(
                     DEVICE_PLANE_MANAGER_RELEASE_V2_REL,
                 DEVICE_PLANE_MANAGER_RELEASE_V3_ENTRIES:
                     DEVICE_PLANE_MANAGER_RELEASE_V3_REL,
+                DEVICE_PLANE_MANAGER_RELEASE_V4_ENTRIES:
+                    DEVICE_PLANE_MANAGER_RELEASE_V4_REL,
+                DEVICE_PLANE_MANAGER_RELEASE_V5_ENTRIES:
+                    DEVICE_PLANE_MANAGER_RELEASE_V5_REL,
+                DEVICE_PLANE_MANAGER_RELEASE_V6_ENTRIES:
+                    DEVICE_PLANE_MANAGER_RELEASE_V6_REL,
             }.get(
                 tuple(predecessor_entries),
                 DEVICE_PLANE_MANAGER_CONTROL_PLANE_REL,
@@ -12877,7 +13229,35 @@ def validate_device_plane_edge_core_channel_upgrade_v4_predecessor(
     }
 
 
-def validate_device_plane_control_core_release_predecessor(payload_dir):
+def device_plane_control_core_preserved_runtime_health_services(descriptor):
+    services = tuple(descriptor.get("preservedServices") or ())
+    expected = (
+        "device-manager",
+        "device-gateway",
+        "device-postgres",
+        "device-backhaul-target",
+    )
+    if services != expected:
+        die("Device Control Core preserved service set mismatch")
+    return services
+
+
+def validate_device_plane_control_core_preserved_runtime_health(descriptor):
+    services = device_plane_control_core_preserved_runtime_health_services(
+        descriptor
+    )
+    for service in services:
+        healthcheck_compose_service("device-plane", service)
+    return services
+
+
+def validate_device_plane_control_core_release_predecessor(
+    payload_dir,
+    *,
+    preflight_phase,
+):
+    if preflight_phase not in ("plan", "apply"):
+        die("Device Control Core predecessor preflight phase is invalid")
     descriptor = validate_device_plane_control_core_release_payload(
         payload_dir
     )
@@ -12981,13 +13361,16 @@ def validate_device_plane_control_core_release_predecessor(payload_dir):
     identity_state = inspect_device_edge_channel_core_identity_state()
     if identity_state != "valid-reuse-at-apply":
         die("Device Control Core release requires the valid active identity")
-    for service in (
+    selected_runtime = (
-        "device-control-core",
+        validate_device_plane_control_core_selected_predecessor_runtime()
-        "device-manager",
+    )
-        "device-gateway",
+    preserved_runtime_health = "deferred-to-apply"
-        "device-postgres",
+    if preflight_phase == "apply":
-    ):
+        preserved_runtime_health = (
-        healthcheck_compose_service("device-plane", service)
+            validate_device_plane_control_core_preserved_runtime_health(
+                descriptor
+            )
+        )
     validate_device_manager_control_plane_runtime(
         require_edge_channel=True,
         core_network_mode="private-egress",
@@ -12997,6 +13380,8 @@ def validate_device_plane_control_core_release_predecessor(payload_dir):
         "descriptor": descriptor,
         "identityState": identity_state,
         "predecessorArtifact": artifact,
+        "selectedRuntime": selected_runtime,
+        "preservedRuntimeHealth": preserved_runtime_health,
     }
 
 
@@ -13287,6 +13672,7 @@ def device_plane_inventory_service_names(inventory):
             or item.get("service") not in (
                 *DEVICE_PLANE_RUNTIME_SERVICES,
                 "device-manager",
+                DEVICE_PLANE_BACKHAUL_TARGET_SERVICE,
             )
             or not isinstance(item.get("containerId"), str)
             or not re.fullmatch(r"[a-f0-9]{64}", item["containerId"])
@@ -13311,6 +13697,89 @@ def device_plane_inventory_service_names(inventory):
     return tuple(names)
 
 
+def validate_device_plane_control_core_selected_predecessor_runtime():
+    inventory = device_plane_runtime_inventory(("device-control-core",))
+    names = device_plane_inventory_service_names(inventory)
+    if names != ("device-control-core",):
+        die("Device Control Core selected predecessor runtime is missing")
+    # This is the selected repair target, not a preserved dependency. Its
+    # observed Docker state is evidence for rollback only; health and state
+    # acceptance belongs to the new generation after recreate.
+    return inventory["services"][0]
+
+
+def accept_device_plane_control_core_rollback_runtime(runtime_before):
+    expected_services = (
+        "device-control-core",
+        "device-manager",
+        "device-gateway",
+        "device-postgres",
+        "device-backhaul-target",
+    )
+    names = device_plane_inventory_service_names(runtime_before)
+    if set(names) != set(expected_services):
+        die("Device Control Core rollback predecessor inventory mismatch")
+    before = {
+        item["service"]: item
+        for item in runtime_before["services"]
+    }
+    selected_before = before["device-control-core"]
+    predecessor_was_healthy = (
+        selected_before["status"] == "running"
+        and selected_before["running"] is True
+        and selected_before["health"] == "healthy"
+    )
+
+    for service in expected_services[1:]:
+        healthcheck_compose_service_with_grace("device-plane", service)
+
+    container_id = compose_service_container_id(
+        "device-plane",
+        "device-control-core",
+    )
+    if container_id == selected_before["containerId"]:
+        die("Device Control Core rollback generation was not recreated")
+    last_status = "unknown"
+    for attempt in range(1, 61):
+        container = inspect_device_plane_container(container_id)
+        state = container.get("State") or {}
+        health = (state.get("Health") or {}).get("Status")
+        last_status = health or state.get("Status") or "unknown"
+        restored_healthy = (
+            state.get("Status") == "running"
+            and state.get("Running") is True
+            and health == "healthy"
+        )
+        restored_repair_boundary = (
+            state.get("Status") in (
+                "created",
+                "running",
+                "paused",
+                "restarting",
+                "exited",
+            )
+            and isinstance(state.get("Running"), bool)
+            and health in (None, "starting", "healthy", "unhealthy")
+        )
+        if restored_healthy or (
+            not predecessor_was_healthy
+            and restored_repair_boundary
+        ):
+            return {
+                "containerId": container_id,
+                "health": health,
+                "status": state.get("Status"),
+                "predecessorHealth": selected_before["health"],
+                "predecessorStatus": selected_before["status"],
+            }
+        if attempt < 60:
+            time.sleep(5)
+    die(
+        "Device Control Core rollback state did not converge: "
+        f"{last_status}"
+    )
+
+
 def validate_device_plane_foundation_recovery_evidence(payload_dir):
     backup_dir = BACKUPS_DIR / DEVICE_PLANE_FOUNDATION_RECOVERY_BACKUP_ID
     try:
@@ -14627,6 +15096,7 @@ def validate_device_manager_control_plane_runtime(
     *,
     require_edge_channel=None,
     core_network_mode=None,
+    require_persistent_data=None,
 ):
     core_ids = device_plane_service_container_ids("device-control-core")
     manager_ids = device_plane_service_container_ids("device-manager")
@@ -14641,6 +15111,16 @@ def validate_device_manager_control_plane_runtime(
             DEVICE_PLANE_ROOT / DEVICE_PLANE_EDGE_CORE_CHANNEL_BOOTSTRAP_REL
         )
         require_edge_channel = edge_descriptor.is_file() and not edge_descriptor.is_symlink()
+    if require_persistent_data is None:
+        data_descriptors = (
+            DEVICE_PLANE_ROOT / DEVICE_PLANE_MANAGER_RELEASE_V6_REL,
+            DEVICE_PLANE_ROOT / DEVICE_PLANE_MANAGER_RELEASE_V5_REL,
+            DEVICE_PLANE_ROOT / DEVICE_PLANE_MANAGER_RELEASE_V4_REL,
+        )
+        require_persistent_data = any(
+            descriptor.is_file() and not descriptor.is_symlink()
+            for descriptor in data_descriptors
+        )
     expected_core_environment = {
         "DEVICE_MANAGEMENT_API_ENABLED": "true",
         "DEVICE_MANAGEMENT_CORE_TOKEN_FILE": (
@@ -14699,6 +15179,23 @@ def validate_device_manager_control_plane_runtime(
             "/run/nodedc-secrets/management-core-token"
         ),
     }
+    if require_persistent_data:
+        expected_manager_environment.update({
+            "NODEDC_DEVICE_MANAGER_PRESENTATION_PATH": (
+                DEVICE_PLANE_MANAGER_PRESENTATION_PATH
+            ),
+            "NODEDC_DEVICE_MANAGER_MEDIA_ROOT": (
+                DEVICE_PLANE_MANAGER_MEDIA_ROOT
+            ),
+        })
+    elif any(
+        key in manager_environment
+        for key in (
+            "NODEDC_DEVICE_MANAGER_PRESENTATION_PATH",
+            "NODEDC_DEVICE_MANAGER_MEDIA_ROOT",
+        )
+    ):
+        die("Device Manager runtime unexpectedly owns persistent data")
     if any(
         manager_environment.get(key) != value
         for key, value in expected_manager_environment.items()
@@ -14783,16 +15280,23 @@ def validate_device_manager_control_plane_runtime(
             DEVICE_PLANE_MANAGEMENT_CORE_TOKEN_FILE
         ),
     }
+    if require_persistent_data:
+        expected_manager_mounts[DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR] = (
+            DEVICE_PLANE_MANAGER_DATA_DIR
+        )
     if set(manager_mounts) != set(expected_manager_mounts):
         die("Device Manager mount set mismatch")
     for destination, source in expected_manager_mounts.items():
         mount = manager_mounts[destination]
+        persistent_mount = destination == DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR
         if (
             mount.get("Type") != "bind"
             or mount.get("Source") != str(source)
-            or mount.get("RW") is not False
+            or mount.get("RW") is not persistent_mount
         ):
-            die("Device Manager secret mount mismatch")
+            die("Device Manager mount boundary mismatch")
+    if require_persistent_data:
+        validate_device_plane_manager_persistent_data_metadata()
     ports = (manager.get("NetworkSettings") or {}).get("Ports") or {}
     if any(bindings for bindings in ports.values()):
         die("Device Manager host port publication is forbidden")
@@ -16447,7 +16951,7 @@ def component_services(component, entries=None):
     if is_device_plane_control_core_release_slice(component, entries):
         return ("device-control-core",)
 
-    if is_device_plane_manager_release_v3_slice(component, entries):
+    if is_device_plane_manager_only_release_slice(component, entries):
         return ("device-manager",)
 
     if is_device_plane_edge_core_channel_bootstrap_slice(component, entries):
@@ -17047,7 +17551,7 @@ def component_builds(component, entries=None):
             ),
         ),)
 
-    if is_device_plane_manager_release_v3_slice(component, entries):
+    if is_device_plane_manager_only_release_slice(component, entries):
         return ((
             DEVICE_PLANE_ROOT / "services/device-manager",
             (
@@ -19354,7 +19858,8 @@ def plan_artifact(artifact):
         ):
             device_plane_control_core_release_preflight = (
                 validate_device_plane_control_core_release_predecessor(
-                    payload_dir
+                    payload_dir,
+                    preflight_phase="plan",
                 )
             )
         if is_device_plane_manager_reconciliation_slice(
@@ -20978,7 +21483,12 @@ def plan_artifact(artifact):
                     "build+recreate:device-manager"
                     if device_plane_manager_activation_preflight["descriptor"].get(
                         "schemaVersion"
-                    ) == "nodedc.device-plane.device-manager-release.v3"
+                    ) in (
+                        "nodedc.device-plane.device-manager-release.v3",
+                        "nodedc.device-plane.device-manager-release.v4",
+                        "nodedc.device-plane.device-manager-release.v5",
+                        "nodedc.device-plane.device-manager-release.v6",
+                    )
                     else "build+recreate:device-control-core,device-manager"
                 )
             )
@@ -20989,12 +21499,54 @@ def plan_artifact(artifact):
                     "device-postgres,device-backhaul-target"
                     if device_plane_manager_activation_preflight["descriptor"].get(
                         "schemaVersion"
-                    ) == "nodedc.device-plane.device-manager-release.v3"
+                    ) in (
+                        "nodedc.device-plane.device-manager-release.v3",
+                        "nodedc.device-plane.device-manager-release.v4",
+                        "nodedc.device-plane.device-manager-release.v5",
+                        "nodedc.device-plane.device-manager-release.v6",
+                    )
                     else "preserved:device-gateway,device-postgres,"
                     "device-backhaul-target"
                 )
             )
-            print("device_manager_health_gate=bounded-grace+contract")
+            manager_schema = device_plane_manager_activation_preflight[
+                "descriptor"
+            ].get("schemaVersion")
+            manager_persistent = manager_schema in (
+                "nodedc.device-plane.device-manager-release.v4",
+                "nodedc.device-plane.device-manager-release.v5",
+                "nodedc.device-plane.device-manager-release.v6",
+            )
+            print(
+                "device_manager_health_gate="
+                + (
+                    "bounded-grace+contract+persistent-data"
+                    if manager_persistent
+                    else "bounded-grace+contract"
+                )
+            )
+            if manager_persistent:
+                print(
+                    "device_manager_persistent_data=runner-managed-preserved:"
+                    f"{DEVICE_PLANE_MANAGER_DATA_DIR}"
+                )
+                print(
+                    "device_manager_persistent_mount=read-write:"
+                    f"{DEVICE_PLANE_MANAGER_DATA_CONTAINER_DIR}"
+                )
+                print("device_manager_default_accent=#f5f5f5")
+                if manager_schema in (
+                    "nodedc.device-plane.device-manager-release.v5",
+                    "nodedc.device-plane.device-manager-release.v6",
+                ):
+                    print(
+                        "device_manager_overview_layout="
+                        "mission-core-landing-stage-v1"
+                    )
+                if manager_schema == (
+                    "nodedc.device-plane.device-manager-release.v6"
+                ):
+                    print("device_manager_favicon_set=nodedc-adaptive-v1")
             if device_plane_manager_activation_preflight["descriptor"].get(
                 "commandTransport"
             ) == "typed-service-ping-v1":
@@ -21007,7 +21559,12 @@ def plan_artifact(artifact):
             print("device_gateway_tcp_9921=preserved:loopback-only")
             print(
                 "device_plane_rollback="
-                "source+reconciled-baseline-runtime"
+                + (
+                    "source+reconciled-baseline-runtime+"
+                    "persistent-manager-data-preserved"
+                    if manager_persistent
+                    else "source+reconciled-baseline-runtime"
+                )
             )
         if device_plane_control_core_release_preflight is not None:
             core_release = device_plane_control_core_release_preflight
@@ -21821,15 +22378,8 @@ def rollback_device_plane_apply(
         "device-plane",
         entries,
     ):
-        for service in (
+        accept_device_plane_control_core_rollback_runtime(
-            "device-control-core",
+            runtime_inventory
-            "device-manager",
-            "device-gateway",
-            "device-postgres",
-        ):
-            healthcheck_compose_service_with_grace(
-                "device-plane",
-                service,
         )
         validate_device_manager_control_plane_runtime(
             require_edge_channel=True,
@@ -22578,6 +23128,47 @@ def ensure_device_plane_backhaul_target_state():
         die("Device Plane backhaul runtime trust verification failed")
 
 
+def validate_device_plane_manager_persistent_data_metadata():
+    try:
+        data_stat = DEVICE_PLANE_MANAGER_DATA_DIR.lstat()
+    except FileNotFoundError:
+        die("Device Manager persistent data directory is missing")
+    if (
+        stat.S_ISLNK(data_stat.st_mode)
+        or not stat.S_ISDIR(data_stat.st_mode)
+        or data_stat.st_uid != 1000
+        or data_stat.st_gid != 1000
+        or stat.S_IMODE(data_stat.st_mode) != 0o750
+    ):
+        die("Device Manager persistent data directory boundary mismatch")
+    return "uid-1000-gid-1000-mode-0750"
+
+
+def ensure_device_plane_manager_persistent_data():
+    data_parent = DEVICE_PLANE_MANAGER_DATA_DIR.parent
+    parent_created = False
+    try:
+        parent_stat = data_parent.lstat()
+    except FileNotFoundError:
+        data_parent.mkdir(mode=0o755)
+        parent_created = True
+        parent_stat = data_parent.lstat()
+    if stat.S_ISLNK(parent_stat.st_mode) or not stat.S_ISDIR(
+        parent_stat.st_mode
+    ):
+        die("Device Manager persistent data parent is unsafe")
+    if parent_created:
+        os.chown(data_parent, 0, 0)
+        data_parent.chmod(0o755)
+    DEVICE_PLANE_MANAGER_DATA_DIR.mkdir(exist_ok=True)
+    data_stat = DEVICE_PLANE_MANAGER_DATA_DIR.lstat()
+    if stat.S_ISLNK(data_stat.st_mode) or not stat.S_ISDIR(data_stat.st_mode):
+        die("Device Manager persistent data path is unsafe")
+    os.chown(DEVICE_PLANE_MANAGER_DATA_DIR, 1000, 1000)
+    DEVICE_PLANE_MANAGER_DATA_DIR.chmod(0o750)
+    return validate_device_plane_manager_persistent_data_metadata()
+
+
 def stop_and_remove_compose_services(component, services):
     if not services:
         return
@@ -22660,6 +23251,11 @@ def prepare_component_runtime(component, entries=None):
                 MAP_GATEWAY_SECRET_RE,
                 "Device Core Hub handoff",
             )
+            if is_device_plane_manager_persistent_release_slice(
+                component,
+                entries,
+            ):
+                ensure_device_plane_manager_persistent_data()
         if (
             is_device_plane_control_core_release_slice(component, entries)
             or is_device_plane_edge_core_channel_bootstrap_slice(
@@ -22982,7 +23578,7 @@ def component_healthchecks(component, entries=None, services=None):
     if is_device_plane_manager_control_plane_slice(component, entries):
         command_transport = (
             "typed-service-ping-v1"
-            if is_device_plane_manager_release_v3_slice(component, entries)
+            if is_device_plane_manager_only_release_slice(component, entries)
             else "disabled"
         )
         checks = ({
@@ -22996,7 +23592,7 @@ def component_healthchecks(component, entries=None, services=None):
                 "commandTransport": command_transport,
             },
         },)
-        if is_device_plane_manager_release_v3_slice(component, entries):
+        if is_device_plane_manager_only_release_slice(component, entries):
             checks += ({
                 "url": "http://127.0.0.1:18080/healthz",
                 "headers": {"Host": "device.nodedc.ru"},
@@ -23595,6 +24191,7 @@ def run_healthchecks(component, entries=None, services=None):
             "device-manager",
             "device-gateway",
             "device-postgres",
+            "device-backhaul-target",
         ):
             healthcheck_compose_service_with_grace(
                 "device-plane",
@@ -23754,7 +24351,7 @@ def run_healthchecks(component, entries=None, services=None):
     if is_device_plane_manager_control_plane_slice(component, entries):
         expected_services = (
             ("device-manager",)
-            if is_device_plane_manager_release_v3_slice(component, entries)
+            if is_device_plane_manager_only_release_slice(component, entries)
             else ("device-control-core", "device-manager")
         )
         if tuple(services or ()) != expected_services:
@@ -23766,6 +24363,21 @@ def run_healthchecks(component, entries=None, services=None):
             )
         for check in component_healthchecks(component, entries, services):
             healthcheck_url(check)
+        if is_device_plane_manager_persistent_release_slice(
+            component,
+            entries,
+        ):
+            validate_device_manager_control_plane_runtime(
+                require_edge_channel=True,
+                core_network_mode="private-egress",
+                require_persistent_data=True,
+            )
+        elif is_device_plane_manager_release_v3_slice(component, entries):
+            validate_device_manager_control_plane_runtime(
+                require_edge_channel=True,
+                core_network_mode="private-egress",
+            )
+        else:
             validate_device_manager_control_plane_runtime()
         return
     if is_device_plane_edge_core_channel_bootstrap_slice(component, entries):
@@ -24659,7 +25271,8 @@ def apply_artifact(artifact):
                     entries,
                 ):
                     validate_device_plane_control_core_release_predecessor(
-                        payload_dir
+                        payload_dir,
+                        preflight_phase="apply",
                     )
                 if is_device_plane_manager_reconciliation_slice(
                     component,
@@ -24986,10 +25599,15 @@ def apply_artifact(artifact):
                             component,
                             entries,
                         )
-                        or is_device_plane_edge_core_channel_bootstrap_slice(
+                    ):
+                        inventory_services = (
+                            *inventory_services,
+                            "device-manager",
+                            "device-backhaul-target",
+                        )
+                    elif is_device_plane_edge_core_channel_bootstrap_slice(
                             component,
                             entries,
-                        )
                         ):
                         inventory_services = (
                             *inventory_services,

infra/deploy-runner/test_device_plane_registry.py

@@ -3,6 +3,7 @@ import importlib.machinery
 import importlib.util
 import inspect
 import json
+import stat
 import tempfile
 import unittest
 from pathlib import Path
@@ -28,6 +29,510 @@ RUNNER = load_runner()
 
 
 class DevicePlaneRegistryTest(unittest.TestCase):
+    def test_manager_v6_pins_034_and_canonical_favicon_boundary(self):
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V6_PREDECESSOR_PATCH_ID,
+            "device-manager-release-v5-20260822-034",
+        )
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V6_PREDECESSOR_ARTIFACT_SHA256,
+            "acc1d2ae2cda66861054826928c25d01a2428e688cc8132a9c381831bf29ab5a",
+        )
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V6_COMPOSE_SHA256,
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V5_COMPOSE_SHA256,
+        )
+        boundaries = RUNNER.expected_device_plane_manager_release_v6_boundaries()
+        self.assertEqual(boundaries["faviconSet"], "nodedc-adaptive-v1")
+        self.assertEqual(
+            boundaries["overviewLayout"],
+            "mission-core-landing-stage-v1",
+        )
+        self.assertEqual(
+            RUNNER.component_services(
+                "device-plane",
+                RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V6_ENTRIES,
+            ),
+            ("device-manager",),
+        )
+
+    def test_manager_v5_pins_033_and_mission_core_overview_layout(self):
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V5_PREDECESSOR_PATCH_ID,
+            "device-manager-release-v4-20260822-033",
+        )
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V5_PREDECESSOR_ARTIFACT_SHA256,
+            "52ba322042f1e4f595bbfea99f8bb35630b15984e0da648dc55348bc9e5b2066",
+        )
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V5_COMPOSE_SHA256,
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V4_COMPOSE_SHA256,
+        )
+        boundaries = RUNNER.expected_device_plane_manager_release_v5_boundaries()
+        self.assertEqual(
+            boundaries["overviewLayout"],
+            "mission-core-landing-stage-v1",
+        )
+        self.assertEqual(
+            RUNNER.component_services(
+                "device-plane",
+                RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V5_ENTRIES,
+            ),
+            ("device-manager",),
+        )
+
+    def test_manager_v4_pins_032_and_persistent_white_boundary(self):
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V4_PREDECESSOR_PATCH_ID,
+            "device-manager-release-v3-20260822-032",
+        )
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V4_PREDECESSOR_ARTIFACT_SHA256,
+            "6e0eb3a0a6f19ceab92d46832b93bffbcea21247dbdc2ea50625a51ff460e4ca",
+        )
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V4_COMPOSE_SHA256,
+            "e7dff0f5873ad4586bd55946d3db2bb86092a5e149e886d120adc041e056c256",
+        )
+        boundaries = RUNNER.expected_device_plane_manager_release_v4_boundaries()
+        self.assertEqual(boundaries["defaultAccentHex"], "#f5f5f5")
+        self.assertEqual(
+            boundaries["presentationDataHostPath"],
+            "/volume1/docker/nodedc-device-plane/data/device-manager",
+        )
+        self.assertEqual(
+            boundaries["presentationDataContainerPath"],
+            "/var/lib/nodedc-device-manager",
+        )
+
+    def test_manager_v3_targets_applied_control_core_recovery(self):
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V3_CONTROL_CORE_PREDECESSOR_PATCH_ID,
+            "device-control-core-release-v2-20260821-030",
+        )
+        self.assertEqual(
+            RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V3_CONTROL_CORE_PREDECESSOR_ARTIFACT_SHA256,
+            "8459521a662541a5a87cb0188991cdcfb51727427db8ec2a232ce4846bfc3454",
+        )
+        self.assertEqual(
+            RUNNER.expected_device_plane_manager_release_v3_boundaries()[
+                "controlCorePredecessor"
+            ],
+            {
+                "patchId": (
+                    "device-control-core-release-v2-20260821-030"
+                ),
+                "artifactSha256": (
+                    "8459521a662541a5a87cb0188991cdcfb51727427db8ec2a232ce4846bfc3454"
+                ),
+            },
+        )
+
+    def test_control_core_predecessor_health_is_phase_scoped(self):
+        with self.assertRaisesRegex(
+            RUNNER.DeployError,
+            "preflight phase is invalid",
+        ):
+            RUNNER.validate_device_plane_control_core_release_predecessor(
+                Path("/not-used"),
+                preflight_phase="unknown",
+            )
+
+        plan_source = inspect.getsource(RUNNER.plan_artifact)
+        self.assertIn(
+            'validate_device_plane_control_core_release_predecessor(\n'
+            '                    payload_dir,\n'
+            '                    preflight_phase="plan",',
+            plan_source,
+        )
+        apply_source = inspect.getsource(RUNNER.apply_artifact)
+        self.assertIn(
+            'validate_device_plane_control_core_release_predecessor(\n'
+            '                        payload_dir,\n'
+            '                        preflight_phase="apply",',
+            apply_source,
+        )
+
+    def test_control_core_preflight_health_excludes_selected_target(self):
+        descriptor = {
+            "preservedServices": [
+                "device-manager",
+                "device-gateway",
+                "device-postgres",
+                "device-backhaul-target",
+            ],
+        }
+        with mock.patch.object(
+            RUNNER,
+            "healthcheck_compose_service",
+        ) as healthcheck:
+            services = (
+                RUNNER.validate_device_plane_control_core_preserved_runtime_health(
+                    descriptor
+                )
+            )
+
+        self.assertEqual(
+            services,
+            (
+                "device-manager",
+                "device-gateway",
+                "device-postgres",
+                "device-backhaul-target",
+            ),
+        )
+        self.assertEqual(
+            healthcheck.call_args_list,
+            [
+                mock.call("device-plane", "device-manager"),
+                mock.call("device-plane", "device-gateway"),
+                mock.call("device-plane", "device-postgres"),
+                mock.call("device-plane", "device-backhaul-target"),
+            ],
+        )
+        self.assertNotIn(
+            mock.call("device-plane", "device-control-core"),
+            healthcheck.call_args_list,
+        )
+
+    def test_control_core_selected_predecessor_may_be_unhealthy(self):
+        inventory = {
+            "schemaVersion": "nodedc.device-plane.runtime-inventory.v1",
+            "composeProject": "nodedc-device-plane",
+            "services": [{
+                "service": "device-control-core",
+                "containerId": "a" * 64,
+                "imageId": "sha256:" + "b" * 64,
+                "status": "running",
+                "running": True,
+                "health": "unhealthy",
+                "restartCount": 4,
+            }],
+        }
+        with mock.patch.object(
+            RUNNER,
+            "device_plane_runtime_inventory",
+            return_value=inventory,
+        ):
+            selected = (
+                RUNNER.validate_device_plane_control_core_selected_predecessor_runtime()
+            )
+        self.assertEqual(selected["health"], "unhealthy")
+
+    def test_control_core_selected_predecessor_may_be_restarting(self):
+        inventory = {
+            "schemaVersion": "nodedc.device-plane.runtime-inventory.v1",
+            "composeProject": "nodedc-device-plane",
+            "services": [{
+                "service": "device-control-core",
+                "containerId": "a" * 64,
+                "imageId": "sha256:" + "b" * 64,
+                "status": "restarting",
+                "running": True,
+                "health": "starting",
+                "restartCount": 5,
+            }],
+        }
+        with mock.patch.object(
+            RUNNER,
+            "device_plane_runtime_inventory",
+            return_value=inventory,
+        ):
+            selected = (
+                RUNNER.validate_device_plane_control_core_selected_predecessor_runtime()
+            )
+        self.assertEqual(selected["status"], "restarting")
+        self.assertEqual(selected["health"], "starting")
+
+    def test_control_core_rollback_accepts_restored_unhealthy_boundary(self):
+        service_names = (
+            "device-control-core",
+            "device-manager",
+            "device-gateway",
+            "device-postgres",
+            "device-backhaul-target",
+        )
+        inventory = {
+            "schemaVersion": "nodedc.device-plane.runtime-inventory.v1",
+            "composeProject": "nodedc-device-plane",
+            "services": [
+                {
+                    "service": service,
+                    "containerId": chr(97 + index) * 64,
+                    "imageId": "sha256:" + str(index + 1) * 64,
+                    "status": "running",
+                    "running": True,
+                    "health": "unhealthy" if index == 0 else "healthy",
+                    "restartCount": index,
+                }
+                for index, service in enumerate(service_names)
+            ],
+        }
+        restored_id = "f" * 64
+        restored = {
+            "Id": restored_id,
+            "State": {
+                "Status": "running",
+                "Running": True,
+                "Health": {"Status": "unhealthy"},
+            },
+        }
+        with (
+            mock.patch.object(
+                RUNNER,
+                "healthcheck_compose_service_with_grace",
+            ) as preserved_health,
+            mock.patch.object(
+                RUNNER,
+                "compose_service_container_id",
+                return_value=restored_id,
+            ),
+            mock.patch.object(
+                RUNNER,
+                "inspect_device_plane_container",
+                return_value=restored,
+            ),
+        ):
+            accepted = (
+                RUNNER.accept_device_plane_control_core_rollback_runtime(
+                    inventory
+                )
+            )
+
+        self.assertEqual(accepted["health"], "unhealthy")
+        self.assertEqual(accepted["status"], "running")
+        self.assertEqual(accepted["predecessorHealth"], "unhealthy")
+        self.assertEqual(
+            preserved_health.call_args_list,
+            [
+                mock.call("device-plane", "device-manager"),
+                mock.call("device-plane", "device-gateway"),
+                mock.call("device-plane", "device-postgres"),
+                mock.call("device-plane", "device-backhaul-target"),
+            ],
+        )
+
+    def test_control_core_post_apply_health_includes_backhaul(self):
+        with (
+            mock.patch.object(
+                RUNNER,
+                "healthcheck_compose_service_with_grace",
+            ) as healthcheck,
+            mock.patch.object(
+                RUNNER,
+                "component_healthchecks",
+                return_value=(),
+            ),
+            mock.patch.object(
+                RUNNER,
+                "validate_device_manager_control_plane_runtime",
+            ),
+        ):
+            RUNNER.run_healthchecks(
+                "device-plane",
+                RUNNER.DEVICE_PLANE_CONTROL_CORE_RELEASE_V2_ENTRIES,
+                ("device-control-core",),
+            )
+
+        self.assertEqual(
+            healthcheck.call_args_list,
+            [
+                mock.call("device-plane", "device-control-core"),
+                mock.call("device-plane", "device-manager"),
+                mock.call("device-plane", "device-gateway"),
+                mock.call("device-plane", "device-postgres"),
+                mock.call("device-plane", "device-backhaul-target"),
+            ],
+        )
+
+    def test_manager_v3_post_apply_uses_private_egress_core_boundary(self):
+        with (
+            mock.patch.object(
+                RUNNER,
+                "healthcheck_compose_service_with_grace",
+            ),
+            mock.patch.object(
+                RUNNER,
+                "component_healthchecks",
+                return_value=(),
+            ),
+            mock.patch.object(
+                RUNNER,
+                "validate_device_manager_control_plane_runtime",
+            ) as runtime_acceptance,
+        ):
+            RUNNER.run_healthchecks(
+                "device-plane",
+                RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V3_ENTRIES,
+                ("device-manager",),
+            )
+
+        runtime_acceptance.assert_called_once_with(
+            require_edge_channel=True,
+            core_network_mode="private-egress",
+        )
+
+    def test_manager_v4_post_apply_requires_persistent_data(self):
+        with (
+            mock.patch.object(
+                RUNNER,
+                "healthcheck_compose_service_with_grace",
+            ),
+            mock.patch.object(
+                RUNNER,
+                "component_healthchecks",
+                return_value=(),
+            ),
+            mock.patch.object(
+                RUNNER,
+                "validate_device_manager_control_plane_runtime",
+            ) as runtime_acceptance,
+        ):
+            RUNNER.run_healthchecks(
+                "device-plane",
+                RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V4_ENTRIES,
+                ("device-manager",),
+            )
+
+        runtime_acceptance.assert_called_once_with(
+            require_edge_channel=True,
+            core_network_mode="private-egress",
+            require_persistent_data=True,
+        )
+
+    def test_manager_v5_post_apply_preserves_persistent_data_gate(self):
+        with (
+            mock.patch.object(
+                RUNNER,
+                "healthcheck_compose_service_with_grace",
+            ),
+            mock.patch.object(
+                RUNNER,
+                "component_healthchecks",
+                return_value=(),
+            ),
+            mock.patch.object(
+                RUNNER,
+                "validate_device_manager_control_plane_runtime",
+            ) as runtime_acceptance,
+        ):
+            RUNNER.run_healthchecks(
+                "device-plane",
+                RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V5_ENTRIES,
+                ("device-manager",),
+            )
+
+        runtime_acceptance.assert_called_once_with(
+            require_edge_channel=True,
+            core_network_mode="private-egress",
+            require_persistent_data=True,
+        )
+
+    def test_manager_v6_post_apply_preserves_persistent_data_gate(self):
+        with (
+            mock.patch.object(
+                RUNNER,
+                "healthcheck_compose_service_with_grace",
+            ),
+            mock.patch.object(
+                RUNNER,
+                "component_healthchecks",
+                return_value=(),
+            ),
+            mock.patch.object(
+                RUNNER,
+                "validate_device_manager_control_plane_runtime",
+            ) as runtime_acceptance,
+        ):
+            RUNNER.run_healthchecks(
+                "device-plane",
+                RUNNER.DEVICE_PLANE_MANAGER_RELEASE_V6_ENTRIES,
+                ("device-manager",),
+            )
+
+        runtime_acceptance.assert_called_once_with(
+            require_edge_channel=True,
+            core_network_mode="private-egress",
+            require_persistent_data=True,
+        )
+
+    def test_manager_v4_prepare_owns_new_parent_and_managed_data_directory(self):
+        with tempfile.TemporaryDirectory(
+            prefix="nodedc-manager-v4-data-",
+        ) as directory:
+            data_dir = Path(directory) / "data" / "device-manager"
+            with (
+                mock.patch.object(
+                    RUNNER,
+                    "DEVICE_PLANE_MANAGER_DATA_DIR",
+                    data_dir,
+                ),
+                mock.patch.object(RUNNER.os, "chown") as chown,
+                mock.patch.object(
+                    RUNNER,
+                    "validate_device_plane_manager_persistent_data_metadata",
+                    return_value="uid-1000-gid-1000-mode-0750",
+                ) as validate,
+            ):
+                result = RUNNER.ensure_device_plane_manager_persistent_data()
+
+        self.assertEqual(result, "uid-1000-gid-1000-mode-0750")
+        self.assertEqual(
+            chown.call_args_list,
+            [
+                mock.call(data_dir.parent, 0, 0),
+                mock.call(data_dir, 1000, 1000),
+            ],
+        )
+        validate.assert_called_once_with()
+
+    def test_manager_v4_prepare_preserves_existing_safe_parent_metadata(self):
+        with tempfile.TemporaryDirectory(
+            prefix="nodedc-manager-v4-parent-",
+        ) as directory:
+            data_parent = Path(directory) / "data"
+            data_parent.mkdir(mode=0o700)
+            data_dir = data_parent / "device-manager"
+            with (
+                mock.patch.object(
+                    RUNNER,
+                    "DEVICE_PLANE_MANAGER_DATA_DIR",
+                    data_dir,
+                ),
+                mock.patch.object(RUNNER.os, "chown") as chown,
+                mock.patch.object(
+                    RUNNER,
+                    "validate_device_plane_manager_persistent_data_metadata",
+                    return_value="uid-1000-gid-1000-mode-0750",
+                ),
+            ):
+                RUNNER.ensure_device_plane_manager_persistent_data()
+
+            self.assertEqual(stat.S_IMODE(data_parent.stat().st_mode), 0o700)
+        chown.assert_called_once_with(data_dir, 1000, 1000)
+
+    def test_manager_v4_prepare_rejects_symlink_parent_before_child_creation(self):
+        with tempfile.TemporaryDirectory(
+            prefix="nodedc-manager-v4-symlink-",
+        ) as directory:
+            root = Path(directory)
+            outside = root / "outside"
+            outside.mkdir()
+            data_parent = root / "data"
+            data_parent.symlink_to(outside, target_is_directory=True)
+            with mock.patch.object(
+                RUNNER,
+                "DEVICE_PLANE_MANAGER_DATA_DIR",
+                data_parent / "device-manager",
+            ):
+                with self.assertRaisesRegex(
+                    RUNNER.DeployError,
+                    "persistent data parent is unsafe",
+                ):
+                    RUNNER.ensure_device_plane_manager_persistent_data()
+            self.assertFalse((outside / "device-manager").exists())
+
     def test_manager_predecessor_health_is_phase_scoped(self):
         with self.assertRaisesRegex(
             RUNNER.DeployError,