Decision Journal Maintenance for accessibility services

Why This Skill Exists

This skill hardens a generated capability for production execution so accessibility services workflows remain deterministic, auditable, and fail-closed under risk.

When To Use

Use this skill only when the request explicitly needs

Decision Journal Maintenance for accessibility services

in accessibility services and a downstream consumer requires contract-bound artifacts.

Step-by-Step Implementation Guide

1. Validate production trigger criteria: explicit capability request, approved source-tagged inputs, and named downstream consumer.
2. Enforce deterministic normalization workflow with pinned mapping/ruleset versions and stable serialization order.
3. Apply explicit determinism tolerance checks (score delta <= 0.005 absolute; identical input must produce zero artifact hash drift).
4. Execute fail-closed validation gates (schema, determinism, policy-risk) and block output on any failure.
5. Require explicit human sign-off token for high-risk runs before publication or downstream routing.
6. Emit handoff envelope with artifact paths, gate results, risk tier, and approval state for the next stage.

Deterministic Workflow Constraints

• Replay score variance: <= 0.005 absolute per item.
• Artifact hash drift for identical replay: 0 allowed.
• Time-dependent fields allowed only in metadata and excluded from scoring.

Validation Gates

1. schema-gate — all required fields present and schema-valid; otherwise block and return error bundle.
2. determinism-gate — replay output within tolerance; otherwise quarantine and escalate.
3. policy-risk-gate — policy and risk checks pass; otherwise block routing.
4. approval-gate-high-risk — if risk is high, require human sign-off token; otherwise fail closed.

Handoff Contract

• Inputs: source-tagged signals, claims, evidence, confidence traces, run context.
• Outputs: deterministic artifact, scorecard, and handoff envelope with approval metadata.
• Routing rule: forward only when every gate passes; high-risk requires explicit sign-off token.

Immediate Hardening Additions

• Fixture:

  fixtures/minimal-valid.json

• Regression case:

  tests/regression-case.md

• Machine-readable summary:

  hardening-summary.json