deploy: pin manager v3 to Core recovery

infra/deploy-runner/nodedc-deploy

@@ -345,10 +345,10 @@ 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"

infra/deploy-runner/test_device_plane_registry.py

@@ -28,6 +28,29 @@ RUNNER = load_runner()
 
 
 class DevicePlaneRegistryTest(unittest.TestCase):
+    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,