yao-meta-skill/reports/skill_os2_audit.md

# Skill OS 2.0 Audit

Generated at: `2026-06-13`

## Summary

- decision: `continue-iteration`
- pass: `11` / `15`
- human required: `1`
- external required: `3`
- missing: `0`
- world-class ready: `false`
- evidence plan: `reports/world_class_evidence_plan.md`

## Audit Items

| Area | Status | Current | Target | Next action |
| --- | --- | --- | --- | --- |
| Skill IR | pass | schema 2.0.0; targets 5 | 2.0 schema, root export, and target-neutral contract evidence | Keep IR as the source before target packaging. |
| Target Compiler | pass | 5/5 targets pass | OpenAI, Claude, generic, Agent Skills compatible, and VS Code contracts generated from IR | Deepen target-native transforms when provider clients expose stronger runtime APIs. |
| Output Eval Lab | pass | 5 cases; delta 100.0; exec 10; blind 5 | with-skill/baseline, assertions, execution evidence, blind A/B, failure taxonomy | Add more real-file and adversarial holdout cases as usage grows. |
| Provider Holdout | external-required | model-executed 0; token-observed 0 | At least one real provider-backed holdout run with observed model/timing/token metadata | Run provider-backed holdout cases with real credentials and commit only aggregate evidence. |
| Human Adjudication | human-required | 0/5 decisions; pending 5 | Real reviewer decisions recorded before claiming output review completion | Record real A/B choices in the decision template, then regenerate adjudication. |
| Benchmark Reproducibility | pass | artifacts 24; missing 0; failures 3 | Public methodology, reproducible commands, required artifacts, and failure disclosure are machine-checkable | Keep the manifest current with every benchmark, package, and release evidence change. |
| Runtime Conformance | pass | 5/5 targets pass | Target package structure, metadata, relative paths, and degradation notes pass | Keep target conformance fixtures updated as platform contracts change. |
| Trust Security | pass | secrets 0; scripts 107; help failures 0 | Secrets, scripts, dependencies, permissions, and package hash are reviewable | Keep high-permission approvals scoped, expiring, and target-mapped. |
| Permission Metadata | pass | 4/4 target probes pass; metadata fallback 4; installer enforcement 4 | Packaged adapters expose explicit permission metadata, residual risks, and installer enforcement evidence when available | Preserve residual-risk notes until real native enforcement exists. |
| Native Permission Enforcement | external-required | native-enforced targets 0; installer-enforced targets 4 | At least one target/client enforces approved permissions at runtime | Integrate a real target-client or external installer runtime guard before claiming native permission enforcement. |
| Skill Atlas | pass | 12 skills; actionable collisions 0 | Workspace catalog, route overlap, stale/owner gaps, drift, and no-route opportunities | Feed real drift data into Atlas once client telemetry is installed. |
| Registry Distribution | pass | zip entries 586; install failures 0; permission failures 0 | Package metadata, archive checksum, package verification, and install simulation pass | Regenerate registry after package verification so checksums stay aligned. |
| Review Studio | pass | decision review; warnings 3; score 91 | One page shows gates, evidence paths, blockers, warnings, actions, waivers, and annotations | Resolve human/external warning gates before claiming full release readiness. |
| Telemetry Drift | pass | events 1; risk low; recipes 5 | Local-first metadata-only event contract, aggregate drift report, hook recipes, and import path | Keep raw JSONL out of distributed packages and use aggregate reports for Atlas. |
| Native Client Telemetry | external-required | external source events 0; adoption samples 1 | A real Browser/Chrome/provider client sends production metadata events | Install a real client against the native host and import production metadata-only events. |

## Open Highest-Leverage Gaps

- `provider-holdout` (external-required): Run provider-backed holdout cases with real credentials and commit only aggregate evidence.
- `human-adjudication` (human-required): Record real A/B choices in the decision template, then regenerate adjudication.
- `native-permission-enforcement` (external-required): Integrate a real target-client or external installer runtime guard before claiming native permission enforcement.
- `native-client-telemetry` (external-required): Install a real client against the native host and import production metadata-only events.

## Evidence

### Skill IR

- existing evidence: `skill-ir/schema.json`, `skill-ir/examples/yao-meta-skill.json`, `references/skill-ir-method.md`

### Target Compiler

- existing evidence: `scripts/compile_skill.py`, `reports/compiled_targets.json`, `tests/verify_compile_skill.py`

### Output Eval Lab

- existing evidence: `evals/output/cases.jsonl`, `scripts/run_output_eval.py`, `scripts/run_output_execution.py`, `reports/output_quality_scorecard.json`, `reports/output_execution_runs.json`, `reports/output_blind_review_pack.json`

### Provider Holdout

- existing evidence: `scripts/provider_output_eval_runner.py`, `reports/output_execution_runs.json`

### Human Adjudication

- existing evidence: `reports/output_review_decisions.json`, `reports/output_review_adjudication.json`, `scripts/adjudicate_output_review.py`

### Benchmark Reproducibility

- existing evidence: `reports/benchmark_methodology.md`, `reports/benchmark_reproducibility.json`, `reports/benchmark_reproducibility.md`, `evals/failure-cases.md`, `tests/verify_benchmark_reproducibility.py`

### Runtime Conformance

- existing evidence: `runtime/conformance/schema.json`, `scripts/run_conformance_suite.py`, `reports/conformance_matrix.json`

### Trust Security

- existing evidence: `scripts/trust_check.py`, `reports/security_trust_report.json`, `security/permission_policy.json`

### Permission Metadata

- existing evidence: `scripts/probe_runtime_permissions.py`, `reports/runtime_permission_probes.json`

### Native Permission Enforcement

- existing evidence: `reports/runtime_permission_probes.json`, `reports/install_simulation.json`, `security/permission_policy.json`

### Skill Atlas

- existing evidence: `scripts/build_skill_atlas.py`, `skill_atlas/catalog.json`, `reports/skill_atlas.json`, `skill_atlas/policy.json`

### Registry Distribution

- existing evidence: `registry/packages/yao-meta-skill.json`, `reports/package_verification.json`, `reports/install_simulation.json`

### Review Studio

- existing evidence: `scripts/render_review_studio.py`, `reports/review-studio.json`, `reports/review-studio.html`

### Telemetry Drift

- existing evidence: `reports/adoption_drift_report.json`, `reports/telemetry_hook_recipes.json`, `scripts/import_telemetry_events.py`

### Native Client Telemetry

- existing evidence: `scripts/telemetry_native_host.py`, `reports/adoption_drift_report.json`