# Code Review Report

**Batch**: AZ-240_native_vio_backend_integration, AZ-241_real_satellite_vpr_descriptor_retrieval, AZ-242_real_anchor_feature_matching_ransac
**Date**: 2026-05-05
**Verdict**: PASS

## Findings

| # | Severity | Category | File:Line | Title |
|---|----------|----------|-----------|-------|
| - | - | - | - | No findings |

## Review Notes

- AZ-240: `NativeVioBackend` keeps engine-specific setup behind the `VioBackend` protocol, maps initialization/runtime errors to explicit `VioHealthReport` failures, and preserves timestamp mismatch, tracking-quality degradation, and no-WGS84-authority behavior.
- AZ-241: `LocalVprRetriever` now loads local descriptor/index packages from cache files, builds a CPU FAISS-compatible descriptor index, reports readiness with loaded record counts, and returns degraded/no-candidate results for missing or invalid packages without network access.
- AZ-242: `GeometryGatedAnchorVerifier` now has a computed matcher path from frame/tile keypoints through `KeypointRansacMatcher`, while the existing safety gates still reject stale provenance, low inliers, high MRE, and geometry failures.

## AC Coverage

| Task | AC Coverage |
|------|-------------|
| AZ-240 | 3/3 covered by `tests/unit/test_vio_adapter.py` |
| AZ-241 | 3/3 covered by `tests/unit/test_satellite_service_vpr.py` |
| AZ-242 | 3/3 covered by `tests/unit/test_anchor_verification.py` |

## Verification

- `python3 -m pytest tests/unit/test_vio_adapter.py tests/unit/test_satellite_service_vpr.py tests/unit/test_anchor_verification.py` passed: 19 tests.
- `python3 -m pytest` passed: 58 tests.
- `python3 -m black ...` and `python3 -m ruff ...` could not run because those optional dev tools are not installed in the current interpreter.