chore(node): preserve pre-canonicalization experiment snapshot

Historical working copy retained for audit before consolidation into main. The canonicalized plugin architecture and later fixes already live in main; this snapshot is not a release or a request to restore obsolete source layout.

src/k1link/fleet/registry.py

@@ -30,6 +30,9 @@ class FleetRegistry:
         from .events import FleetEvents
 
         self.events = FleetEvents()
+        from .device_enrollment import DeviceEnrollment
+
+        self.device_enrollment = DeviceEnrollment()
         self.trust = CoreTrust(root)
         path = root / "fleet.sqlite3"
         if path.is_symlink():
@@ -378,6 +381,7 @@ class FleetRegistry:
                 return 400, {"error": "Invalid Node inventory"}
             sensor_state = sensors.validate_inventory(value, node_id)
             sensor_response = sensors.heartbeat(row, value)
+            enrollment_response = self.device_enrollment.heartbeat(row, value)
             host = value.get("host")
             if (
                 not isinstance(host, dict)
@@ -403,4 +407,4 @@ class FleetRegistry:
                 }
                 row["binding"]["client_pem"] = self.trust.leaf(node_id, key)
             self.save(row)
-            return 200, {"ok": True, "client_pem": row["binding"]["client_pem"], **sensor_response}
+            return 200, {"ok": True, "client_pem": row["binding"]["client_pem"], **sensor_response, **enrollment_response}