# Policy Engine Task Board (Sprint 9)

| ID | Status | Owner(s) | Depends on | Description | Exit Criteria |
|----|--------|----------|------------|-------------|---------------|
| POLICY-CORE-09-001 | DONE | Policy Guild | SCANNER-WEB-09-101 | Define YAML schema/binder, diagnostics, CLI validation for policy files. | Schema doc published; binder loads sample policy; validation errors actionable. |
| POLICY-CORE-09-002 | DONE | Policy Guild | POLICY-CORE-09-001 | Implement policy snapshot store + revision digests + audit logging. | Snapshots persisted with digest; tests compare revisions; audit entries created. |
| POLICY-CORE-09-003 | DONE | Policy Guild | POLICY-CORE-09-002 | `/policy/preview` API (image digest → projected verdict delta). | Preview returns diff JSON; integration tests with mocked report; docs updated. |
| POLICY-CORE-09-004 | TODO | Policy Guild | POLICY-CORE-09-001 | Versioned scoring config with schema validation, trust table, and golden fixtures. | Scoring config documented; fixtures stored; validation CLI passes. |
| POLICY-CORE-09-005 | TODO | Policy Guild | POLICY-CORE-09-004 | Scoring/quiet engine – compute score, enforce VEX-only quiet rules, emit inputs and provenance. | Engine unit tests cover severity weighting; outputs include provenance data. |
| POLICY-CORE-09-006 | TODO | Policy Guild | POLICY-CORE-09-005 | Unknown state & confidence decay – deterministic bands surfaced in policy outputs. | Confidence decay tests pass; docs updated; preview endpoint displays banding. |
| POLICY-CORE-09-004 | TODO | Policy Guild | POLICY-CORE-09-001 | Versioned scoring config (weights, trust table, reachability buckets) with schema validation, binder, and golden fixtures. | Config serialized with semantic version, binder loads defaults, fixtures assert deterministic hash. |
| POLICY-CORE-09-005 | TODO | Policy Guild | POLICY-CORE-09-004, POLICY-CORE-09-002 | Implement scoring/quiet engine: compute score from config, enforce VEX-only quiet rules, emit inputs + `quietedBy` metadata in policy verdicts. | `/reports` policy result includes score, inputs, configVersion, quiet provenance; unit/integration tests prove reproducibility. |
| POLICY-CORE-09-006 | TODO | Policy Guild | POLICY-CORE-09-005, FEEDCORE-ENGINE-07-003 | Track unknown states with deterministic confidence bands that decay over time; expose state in policy outputs and docs. | Unknown flags + confidence band persisted, decay job deterministic, preview/report APIs show state with tests covering decay math. |

## Notes
- 2025-10-18: POLICY-CORE-09-001 completed. Binder + diagnostics + CLI scaffolding landed with tests; schema embedded at `src/StellaOps.Policy/Schemas/policy-schema@1.json` and referenced by docs/11_DATA_SCHEMAS.md.
- 2025-10-18: POLICY-CORE-09-002 completed. Snapshot store + audit trail implemented with deterministic digest hashing and tests covering revision increments and dedupe.
- 2025-10-18: POLICY-CORE-09-003 delivered. Preview service evaluates policy projections vs. baseline, returns verdict diffs, and ships with unit coverage.
