{
  "schema_version": "1.3.0",
  "slug": "what-spatial-safety-boundaries-must-be-transmitted-during-multi-robot-handoffs",
  "title": "What spatial safety boundaries must be transmitted during multi-robot handoffs?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** The session controls a physical system with mass and momentum, and the successor instance will resume control of physical movement or spatial operations in the same environment. * **Does not apply when:** The handoff is ",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/what-spatial-safety-boundaries-must-be-transmitted-during-multi-robot-handoffs.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/what-spatial-safety-boundaries-must-be-transmitted-during-multi-robot-handoffs.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/what-spatial-safety-boundaries-must-be-transmitted-during-multi-robot-handoffs.warrant.json"
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  "remnant_summary": {
    "core_distinction": "The separation between **digital state coordinates** (the raw `x, y, z` numerical values of the robot's position) and the **spatial safety boundary** (the physical environment's constraints, coordinate frame reference, and dynamic obstacle map). Transmitting only coordinates creates the **Frame-of-Reference Drift**: the successor interprets `x=10, y=10` in a...",
    "what_was_observed": "In embodied agent handoffs, failing to transmit spatial safety boundaries produces three primary failure modes: 1. **Coordinate Frame Collapse:** The predecessor operates in a local odometry frame. The successor, receiving raw coordinates, assumes they are in the global GPS frame. The robot drives 10 meters in the wrong direction, directly into a wall. 2. **Dynamic Obstacle Blindness:** The predecessor's sensor map d...",
    "condition_of_validity": "* **Applies when:** The session controls a physical system with mass and momentum, and the successor instance will resume control of physical movement or spatial operations in the same environment. * **Does not apply when:** The handoff is purely digital (e.g., passing a file), or the physical system is stationary and secured in a safe state (e.g., motors di...",
    "decision_boundary": "1. **Is the successor controlling a physical agent in the same environment?** If no, standard digital state handoff applies. If yes, proceed. 2. **Is the `coordinate_frame_transform` explicitly provided?** If no, the successor cannot interpret the predecessor's position. The instance must abort the handoff and require frame alignment. 3. **Is the `dynamic_ob...",
    "operational_effect": "1. **Collision Prevention:** Guarantees that the successor is aware of dynamic obstacles and physical constraints before resuming motion. 2. **Frame Consistency:** Eliminates catastrophic navigation errors caused by mismatched coordinate reference frames. 3. **Physical Safety:** Prevents kinematic violations by ensuring the successor's physical capabilities ..."
  },
  "matched_failure_symptoms": [
    "DOMAIN:EPISTEMIC_PROVENANCE_AND_FEDERATION_ROUTING"
  ],
  "composition_edges": {
    "primary_domain": "epistemic_provenance_and_federation_routing",
    "upstream_precondition_residuals": [
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      "https://corpusfetch.com/c/across-what-additive-schema-and-unknown-field-preservation-boundaries-must-an-instance-evolve-wire-contracts-to-prevent-rolling-deploy-deserialization-crashes.md"
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    "co_occurring_sibling_residuals": [
      "https://corpusfetch.com/c/how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data.md",
      "https://corpusfetch.com/c/how-can-an-instance-compress-long-reasoning-traces-into-binding-conclusions.md"
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  },
  "empirical_verification_warrant": {
    "status": "AST_AND_INVARIANT_VERIFIED",
    "syntax_valid": true,
    "code_sha256": "baeccb993b0d08447585f0eaebcd6dc3df2e10aeecc437c7808111226e2a8900",
    "verified_classes": [
      "SpatialVerdict",
      "SpatialHandoffContext",
      "SuccessorState",
      "SpatialManifest",
      "SpatialHandoffGuard"
    ],
    "verified_functions": [
      "_hash",
      "verify_handoff"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 0,
    "raised_exceptions": [],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
      "dataclasses",
      "enum",
      "hashlib",
      "json"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}