# Product Implementation Completeness Gate — cycle 1

**Date**: 2026-05-11
**Cycle**: 1
**Tasks evaluated**: AZ-484
**Verdict**: PASS

## Per-Task Classification

### AZ-484 — Multi-source tile storage schema (source + captured_at) — **PASS**

**Evidence checked**:

| Promise from spec | Production evidence |
|--------------------|---------------------|
| Migration 013 transactional, with column adds, backfill, index swap | `SatelliteProvider.DataAccess/Migrations/013_AddTileSourceAndCapturedAt.sql` (BEGIN/COMMIT, ALTER ADD COLUMN, UPDATE backfill, ALTER SET NOT NULL, DROP INDEX, CREATE UNIQUE INDEX) |
| `TileSource` enum in Common.Enums | `SatelliteProvider.Common/Enums/TileSource.cs` (`{ GoogleMaps, Uav }`) |
| `TileEntity` exposes `Source` + `CapturedAt` | `SatelliteProvider.DataAccess/Models/TileEntity.cs` |
| Repository read selection is most-recent across sources, deterministic | `TileRepository.GetByTileCoordinatesAsync` + `GetTilesByRegionAsync` (DISTINCT ON with `(captured_at DESC, updated_at DESC, id DESC)` tie-break) |
| Per-source UPSERT semantics on insert | `TileRepository.InsertAsync` (`ON CONFLICT (latitude, longitude, tile_zoom, tile_size_meters, source) DO UPDATE`) |
| `UpdateAsync` includes the new fields | `TileRepository.UpdateAsync` SET clause |
| Google Maps download path stamps `Source` + `CapturedAt` | `TileService.BuildTileEntity` |
| Snake_case wire format for `TileSource` | `SatelliteProvider.Common.Enums.TileSourceConverter` (`ToWireValue` / `FromWireValue` / `IsValidWireValue`). `TileEntity.Source` stores the wire string directly because Dapper bypasses `TypeHandler<T>` for enum reads — see `_docs/LESSONS.md` L-001. |
| Architecture Vision amended | `_docs/02_document/architecture.md` (Architecture Vision principles + System Context) |
| Glossary amended | `_docs/02_document/glossary.md` (`Tile Source`, `Captured At`; Layer 1 / Layer 2 disambiguation) |
| Module-layout amended | `_docs/02_document/module-layout.md` (Common Public API list) |
| Contract `tile-storage.md` v1.0.0 frozen | `_docs/02_document/contracts/data-access/tile-storage.md` Status: `frozen` |

**Unresolved markers** (`TODO`, `placeholder`, `NotImplemented`, etc.) under owned files (`SatelliteProvider.Common/Enums/TileSource.cs`, `SatelliteProvider.Common/Enums/TileSourceConverter.cs`, `SatelliteProvider.DataAccess/Migrations/013_AddTileSourceAndCapturedAt.sql`, `SatelliteProvider.DataAccess/Models/TileEntity.cs`, `SatelliteProvider.DataAccess/Repositories/TileRepository.cs`, `SatelliteProvider.Services.TileDownloader/TileService.cs`): none found.

**Named runtime dependencies**: AZ-484 introduces no new external dependency. It uses the existing Dapper / Npgsql / DbUp stack already integrated. `TileSourceConverter` is a pure helper with no DI registration required. The deleted `TileSourceTypeHandler` registration was removed from `DapperEnumTypeHandlers.RegisterAll` after the Dapper-enum-bypass discovery (see L-001).

**Internal vs external**: every promised capability is an internal product capability and is implemented in production code. No promise is blocked on an external prerequisite. The deferred AZ-485 (UAV upload endpoint) is explicitly out of scope for this task.

**Tests exercise real implementation path**:
- Unit: `BuildTileEntity_SetsGoogleMapsSourceAndUtcCapturedAt_AZ484_AC5` calls the real `TileService.DownloadAndStoreSingleTileAsync` path.
- Integration (migration): the AC-1..AC-4 tests run against the real Postgres container, asserting the live schema (5-column unique index, dropped legacy 4-column index) and the SQL semantics of the repository methods.

## Cycle Verdict

All product tasks (1/1) classified PASS. Proceeding to Final Test Run handoff (autodev Step 11).

## Remediation Tasks Created

None.
