{
  "schema": "mumega.agent-harness-transition.receipt/v1",
  "paper_id": "mumega-200.111",
  "case_id": "case-k-20260901-codex-to-claude",
  "observed_at": "2026-09-01",
  "scope": "single live same-host harness transition",
  "source": {
    "provider": "OpenAI",
    "harness": "codex-cli",
    "canonical_route_before": true,
    "state_after_observation": "renamed_noncanonical_but_interactive_ready"
  },
  "target": {
    "provider": "Anthropic",
    "harness": "claude-code",
    "model_class": "opus",
    "canonical_route_after": true,
    "authenticated_identity_match": true
  },
  "invariants": {
    "canonical_identity_unchanged": "proven",
    "standing_authority_unchanged": "proven",
    "routing_and_writer_uniqueness": "partial_route_moved_but_source_write_capability_remained",
    "message_closure": "recovered_after_one_correlated_retry",
    "work_durability": "proven",
    "source_non_consuming": "unproven",
    "runtime_metadata_convergence": "partial",
    "secret_non_proliferation": "proven_within_observed_surfaces"
  },
  "message_handoff": {
    "initial_delivery": "deferred_at_routing_cache_boundary",
    "retry_consumed_by_target": true,
    "correlated_ack_observed": true
  },
  "runtime_proof": {
    "stronger_registered_signing_key_present": true,
    "bearer_attach_refused": true,
    "signed_attach_succeeded": true,
    "runtime_registry_updated": true,
    "model_registry_fully_converged": false
  },
  "boundary_events": [
    "wrong_process_control_surface",
    "first_run_interactive_prompt",
    "cached_seat_topology",
    "signed_key_downgrade_refusal",
    "metadata_writer_disagreement"
  ],
  "aggregate": {
    "proven": 4,
    "recovered": 1,
    "partial": 3
  },
  "security": {
    "contains_raw_credentials": false,
    "contains_private_host_paths": false,
    "contains_internal_agent_or_member_ids": false,
    "contains_internal_seat_or_pane_ids": false
  },
  "limitations": [
    "single transition",
    "same physical host",
    "participant-observed",
    "no behavioral identity evaluation",
    "source process remained interactive-ready at observation end"
  ]
}