{
  "surface_version": "0.1",
  "node_id": "xen-alpine-surface",
  "role": "gcl-edge",
  "mode_default": "recovery",
  "operational_model": "appliance",
  "memory_budget_mb": 192,
  "disk_budget_gb": 2,
  "local_state_budget_mb": 64,
  "api": {
    "plain_health_port": 8080,
    "websocket_port": 8080,
    "bind": "localhost"
  },
  "storage": {
    "provider": "none",
    "mount_point": "/mnt/topological-storage",
    "remote": "",
    "required_for_boot": false,
    "write_mode": "outbox",
    "spool_budget_mb": 32
  },
  "topological_substrate": {
    "class": "xen-alpine-nanokernel-carrier",
    "carrier": "alpine-openrc-qemu-xen",
    "kernel_exposes_primitives": true,
    "vector_width_bits": 64,
    "compute_slots": 1,
    "memory_reserve_mb": 64,
    "primitives": [
      "health",
      "status",
      "metrics",
      "attest",
      "compress",
      "rgflow",
      "route",
      "plan_route",
      "mount_status",
      "snapshot",
      "receipt"
    ],
    "accelerators": [
      "virtio_net",
      "virtio_blk",
      "serial_console"
    ]
  },
  "boot_strategy": {
    "target_layer": "layer0-gcl-nanokernel",
    "handoff": "manual",
    "linux_role": "runtime_carrier",
    "destructive_handoff_allowed": false,
    "layer0_image": {
      "path": "/boot/gcl/layer0-xen-alpine.img",
      "sha256": "TBD",
      "signature": "/boot/gcl/layer0-xen-alpine.img.sig",
      "public_key": "/etc/rs-surface/layer0.pub",
      "cmdline": "console=hvc0 gcl.node=xen-alpine-surface gcl.mode=layer0"
    },
    "rollback": {
      "boot_entry": "alpine-openrc-rs-surface-last-good",
      "previous_image": "/boot/gcl/layer0-xen-alpine.previous.img",
      "provider_rescue": "xen-console-or-qemu-serial"
    },
    "preserve": [
      "serial_console",
      "node_identity",
      "last_good_receipt",
      "rs_surface_profile",
      "qemu_smoke_harness"
    ],
    "wipe": [
      "general_linux_userspace",
      "browser_session_state",
      "model_router",
      "ad_hoc_shell_state"
    ],
    "required_gates": [
      "serial_or_console_health_pulse",
      "qemu_health_probe",
      "rollback_boot_entry",
      "signed_layer0_image",
      "out_of_band_recovery_window"
    ]
  },
  "capabilities": [
    "health",
    "status",
    "metrics",
    "attest",
    "compress",
    "rgflow",
    "route",
    "plan_route",
    "mount_status",
    "snapshot",
    "nanokernel",
    "topological_substrate",
    "kernel_primitives",
    "recovery"
  ],
  "disabled": [
    "full_git_checkout",
    "local_training",
    "local_build",
    "large_database",
    "browser_session_state",
    "provider_secrets",
    "legacy_warden_service",
    "legacy_tardy_service",
    "legacy_substrate_index_service",
    "legacy_compression_gateway_service"
  ]
}