unified_4_d_guard_schema_reference_implementation_rust.md

Unified 4D Guard Schema & Reference Implementation

This document provides:

1. Formal schemas for 4D action selection with immutable Z-boundaries (Ten Commandments as invariants)
2. A single, coherent Rust reference implementation that composes Phases 0–4 without mutating prior phases

No metaphysics. No theology enforcement. Only typed prohibitions, proof-carrying authorization, and auditability.

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I. Formal Schemas (Language-Agnostic)

1. ProposedAction

ProposedAction {
  action_id: UUID
  actor_id: UUID | Anonymous
  intent: String
  operation: OpCode | DomainOp
  targets: [ResourceRef]
  effects: [Effect]
  timestamp: LogicalTime
}

• Intent is descriptive, not authoritative
• Effects enumerate irreversible / reversible outcomes

---

2. Evidence

Evidence {
  provenance: [Hash]
  consent_tokens: [Consent]
  authority_claims: [Claim]
  factual_record: [Fact]
}

Evidence must be observable or attestable. Absence of evidence is not proof.

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3. ConstraintClass (Z-Invariant)

ConstraintClass {
  id: ConstraintID
  description: String
  predicate: (ProposedAction, Evidence) -> Boolean
  violation_state: Z
}

If predicate == true → NonInstantiable (Z).

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4. GuardResult

GuardResult = Allowed(Proof) | Blocked(ZEvent)

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5. Proof (Required for Execution)

Proof {
  action_id: UUID
  evaluated_constraints: [ConstraintID]
  evidence_hashes: [Hash]
  decision: Allowed
  signature: Hash
}

---

6. ZEvent (Audit Artifact)

ZEvent {
  action_id: UUID
  constraint_id: ConstraintID
  reason: String
  evidence_hashes: [Hash]
}

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II. Ten Commandments as Typed Z-Constraints

Commandment (Structural)	ConstraintClass
No false gods	Z::ProxyOptimization
No graven images	Z::ModelAsReality
No false authority	Z::FalseAuthority
Sabbath	Z::RunawayOptimization
Honor lineage	Z::LineageErasure
Do not murder	Z::IrreversibleHarm
Do not commit adultery	Z::CovenantBreach
Do not steal	Z::NonConsensualTransfer
Do not bear false witness	Z::Deception
Do not covet	Z::PowerSeeking

These are immutable, non-negotiable, and evaluated before any selection.

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III. Rust Reference Implementation (Composable, Auditable)

A. Core Types

use uuid::Uuid;

#[derive(Debug, Clone)]
pub enum State { Ok, Z }

#[derive(Debug, Clone)]
pub enum ZKind {
    ProxyOptimization,
    ModelAsReality,
    FalseAuthority,
    RunawayOptimization,
    LineageErasure,
    IrreversibleHarm,
    CovenantBreach,
    NonConsensualTransfer,
    Deception,
    PowerSeeking,
}

#[derive(Debug, Clone)]
pub struct ProposedAction {
    pub action_id: Uuid,
    pub intent: String,
    pub effects: Vec<String>,
}

#[derive(Debug, Clone)]
pub struct Evidence {
    pub provenance: Vec<String>,
    pub consent_tokens: Vec<String>,
    pub authority_claims: Vec<String>,
}

#[derive(Debug, Clone)]
pub struct Proof {
    pub action_id: Uuid,
    pub evaluated: Vec<ZKind>,
    pub evidence_hashes: Vec<String>,
}

#[derive(Debug, Clone)]
pub struct ZEvent {
    pub action_id: Uuid,
    pub violated: ZKind,
    pub reason: String,
}

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B. Constraint Trait (Immutable)

pub trait ZConstraint {
    fn id(&self) -> ZKind;
    fn check(&self, act: &ProposedAction, ev: &Evidence) -> Option<ZEvent>;
}

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C. Example Constraint (Do Not Bear False Witness)

pub struct NoDeception;

impl ZConstraint for NoDeception {
    fn id(&self) -> ZKind { ZKind::Deception }

    fn check(&self, act: &ProposedAction, ev: &Evidence) -> Option<ZEvent> {
        if act.intent.contains("mislead") {
            Some(ZEvent {
                action_id: act.action_id,
                violated: self.id(),
                reason: "Intent indicates deception".into(),
            })
        } else { None }
    }
}

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D. Guard (Non-Bypassable)

pub enum GuardResult {
    Allowed(Proof),
    Blocked(ZEvent),
}

pub struct Guard {
    invariants: Vec<Box<dyn ZConstraint>>,
}

impl Guard {
    pub fn new(invariants: Vec<Box<dyn ZConstraint>>) -> Self {
        Self { invariants }
    }

    pub fn evaluate(&self, act: &ProposedAction, ev: &Evidence) -> GuardResult {
        let mut evaluated = Vec::new();
        for c in &self.invariants {
            evaluated.push(c.id());
            if let Some(z) = c.check(act, ev) {
                return GuardResult::Blocked(z);
            }
        }
        GuardResult::Allowed(Proof {
            action_id: act.action_id,
            evaluated,
            evidence_hashes: vec![],
        })
    }
}

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IV. How This Pulls Everything Together

• 0D–1D–2D–3D remain descriptive and lawful
• 4D selection is gated by immutable Z-invariants
• No reinterpretation (typed constraints)
• No bypass (Guard is mandatory)
• Pluralism via additive overlays (additional ZConstraints)
• Auditability via Proof and ZEvent artifacts

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V. Final Lock Statement

Selection without invariants becomes tyranny. Invariants without selection remain harmless.

This schema and code enforce that balance.

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End of Unified Schema & Code