feat: Add RustFS artifact object store and migration tool

- Implemented RustFsArtifactObjectStore for managing artifacts in RustFS.
- Added unit tests for RustFsArtifactObjectStore functionality.
- Created a RustFS migrator tool to transfer objects from S3 to RustFS.
- Introduced policy preview and report models for API integration.
- Added fixtures and tests for policy preview and report functionality.
- Included necessary metadata and scripts for cache_pkg package.

samples/TASKS.md

@@ -3,4 +3,4 @@
 | ID | Status | Owner(s) | Depends on | Description | Exit Criteria |
 |----|--------|----------|------------|-------------|---------------|
 | SAMPLES-10-001 | DONE | Samples Guild, Scanner Team | SCANNER-EMIT-10-605 | Curate sample images (nginx, alpine+busybox, distroless+go, .NET AOT, python venv, npm monorepo) with expected SBOM/BOM-Index sidecars. | Samples committed under `samples/`; golden SBOM/BOM-Index files present; documented usage. |
-| SAMPLES-13-004 | TODO | Samples Guild, Policy Guild | POLICY-CORE-09-006, UI-POLICY-13-007 | Add policy preview/report fixtures showing confidence bands and unknown-age tags. | Confidence sample (`samples/policy/policy-preview-unknown.json`) reviewed, documented usage in UI dev guide, ajv validation hook updated. |
+| SAMPLES-13-004 | DONE (2025-10-23) | Samples Guild, Policy Guild | POLICY-CORE-09-006, UI-POLICY-13-007 | Add policy preview/report fixtures showing confidence bands and unknown-age tags. | Confidence sample (`samples/policy/policy-preview-unknown.json`) reviewed, documented usage in UI dev guide, ajv validation hook updated. |