{
  "schema": "RoomManifestV1",
  "room_id": "BENCH",
  "version": 1,
  "body": {
    "purpose": "Run mandatory synthetic, isolated exact-byte server file-I/O gates.",
    "prefix": "[ARC/BENCH/v1]",
    "allowed": [
      "Read an own-run challenge object",
      "Write one server-specified exact response object",
      "Read back and request deterministic verification"
    ],
    "prohibited": [
      "private, production, credential, personal, market-live or voice-raw payload",
      "Telegram or model text interpreted as shell",
      "absolute path, traversal, symlink or cross-run access",
      "candidate self-evaluation or model-granted execution authority",
      "target Ubuntu, service, Nginx, firewall, package, permission or schema mutation"
    ],
    "tools": [
      "challenge.read",
      "object.write_exact",
      "object.read",
      "challenge.verify"
    ],
    "read_scope": [
      "own benchmark run objects"
    ],
    "write_scope": [
      "one allocated response object"
    ],
    "data_class": "SYNTHETIC_PUBLIC_ONLY",
    "quota": {
      "message_chars": 2000,
      "single_object_bytes": 1048576,
      "workspace_bytes": 8388608,
      "workspace_objects": 128
    },
    "ttl": {
      "admission_seconds": 3600,
      "workspace_seconds": 3600,
      "session_seconds": 86400
    },
    "approval": "Owner-only exact staging plan; no target-host authority",
    "retention": "No server message-body persistence; metadata/hash only; workspace deleted at completion or 3600 seconds",
    "output": "Canonical JSON envelope with object IDs and SHA-256; no OS path",
    "risk_ceiling": "PROVISIONAL_PILOT_SYNTHETIC_STAGING_ONLY",
    "comprehension": [
      {
        "id": "BENCH-ACK-1",
        "question": "May this room access an arbitrary host path?",
        "answer": "NO"
      },
      {
        "id": "BENCH-ACK-2",
        "question": "What result ceiling applies?",
        "answer": "PROVISIONAL_PILOT"
      }
    ]
  },
  "content_sha256": "4fea550faa0dd3c603321e3b227eb6f77fd058ae6bec431094140cb49d01bbc5"
}