# Batch Report

**Batch**: 4 (refactor 02-coupling-refactoring · Phase A)
**Tasks**: AZ-310, AZ-311
**Date**: 2026-05-10

## Task Results

| Task | Status | Files Modified | Tests | AC Coverage | Issues |
|------|--------|---------------|-------|-------------|--------|
| AZ-310 ServeTile via ITileService | Done | 5 src + 2 tests | 40/40 | 5/5 ACs covered | None |
| AZ-311 GetTileByLatLon via ITileService | Done | (shared) | (shared) | 3/3 ACs covered | None |

## Files Changed

- `SatelliteProvider.Common/DTO/TileBytes.cs` (new)
- `SatelliteProvider.Common/Interfaces/ITileService.cs`
- `SatelliteProvider.Services/SatelliteProvider.Services.csproj`
- `SatelliteProvider.Services/TileService.cs`
- `SatelliteProvider.Api/Program.cs`
- `SatelliteProvider.Tests/SatelliteProvider.Tests.csproj`
- `SatelliteProvider.Tests/TileServiceTests.cs`
- `SatelliteProvider.Tests/InfrastructureTests.cs`

## AC Test Coverage

8 of 8 ACs covered (5 unit-tested, 3 verified by static inspection of `Program.cs` + reachable via integration smoke run).

## Code Review Verdict

**PASS** — no findings. See `_docs/03_implementation/reviews/batch_04_review.md`.

## Auto-Fix Attempts

0

## Build / Tests

- `dotnet build SatelliteProvider.sln --configuration Release` → 0 warnings, 0 errors
- `dotnet test SatelliteProvider.Tests` → 40/40 passed (35 baseline + 5 new)

## Architecture-Baseline Impact

- F3 (Medium — endpoint routing bypasses ITileService): resolved by this batch (code change). Doc resolution deferred to AZ-315.

## Next Batch

AZ-312 + AZ-313 + AZ-314 (Phase B — split `SatelliteProvider.Services` into 3 csprojs, rewire consumers, DI extension methods).