# Implementation Report — Cycle 8

**Cycle**: 8
**Date**: 2026-05-23
**Tasks shipped**: AZ-812 (batch 1), AZ-808 + AZ-811 (batch 2), AZ-809 (batch 3), AZ-810 (batch 4)
**Verdict**: PASS (Product Implementation Completeness Gate — `implementation_completeness_cycle8_report.md`)
**Code Review Verdict**: PASS_WITH_WARNINGS (4 Low across 4 batches, all DRY-in-test-helpers or design-decision documented; 0 Critical, 0 High, 0 Medium)

## Summary

Cycle 8 completes **strict input validation across every public API endpoint** of the satellite-provider service. The cycle delivers the per-endpoint children of the AZ-795 epic ("Strict Input Validation") that cycle 7 set up the foundations for (`UnmappedMemberHandling.Disallow`, `GlobalExceptionHandler`, `ValidationEndpointFilter<T>`, `error-shape.md` v1.0.0). After cycle 8, every JSON-body, multipart-envelope, and query-parameter endpoint:

- Rejects unknown fields at the deserializer level (`UnmappedMemberHandling.Disallow` from cycle 7).
- Rejects missing required fields via `[JsonRequired]` (deserializer-layer, surfaces as `JsonException` → `GlobalExceptionHandler` → RFC 7807 `ValidationProblemDetails`).
- Rejects out-of-range / business-rule-violating values via FluentValidation (12.0.0), with errors in the same `ValidationProblemDetails` shape and consistent camelCase JSON-path error keys per `error-shape.md` v1.0.0 Inv-4.
- Documents the validation in a per-endpoint contract under `_docs/02_document/contracts/api/`.
- Ships per-validator unit tests + integration tests + curl probe scripts (3 new contract docs + 1 version bump + 4 new probe scripts + ~50 new unit/integration test methods).

The endpoint coverage table:

| Endpoint | Method | Cycle 8 batch | Validator |
|----------|--------|---------------|-----------|
| `POST /api/satellite/request` | JSON body | 02 (AZ-808) | `RegionRequestValidator` |
| `POST /api/satellite/route` | JSON body (nested DTO chain) | 03 (AZ-809) | `CreateRouteRequestValidator` + `RoutePointValidator` + `GeofencePolygonValidator` |
| `POST /api/satellite/upload` | multipart/form-data | 04 (AZ-810) | `UavTileBatchMetadataPayloadValidator` + `UavTileMetadataValidator` + bespoke `UavUploadValidationFilter` |
| `GET /api/satellite/tiles/latlon` | query params | 02 (AZ-811) | `GetTileByLatLonQueryValidator` + `RejectUnknownQueryParamsEndpointFilter` |
| `POST /api/satellite/tiles/inventory` | JSON body | (cycle 7) | `InventoryRequestValidator` (pre-existing) |

Batch 1 (AZ-812) was the prerequisite rename — every cycle-8 endpoint now uses OSM `lat`/`lon` wire keys for input coordinates (the rename closed a long-standing inconsistency with the Leaflet / Slippy Map convention).

## Batches

| Batch | Tasks | Verdict | Report | Review |
|-------|-------|---------|--------|--------|
| 01 | AZ-812 — Region API field rename (Latitude/Longitude → Lat/Lon, OSM convention) | PASS | `batch_01_cycle8_report.md` | `reviews/batch_01_cycle8_review.md` |
| 02 | AZ-808 — Region POST strict validation **+** AZ-811 — lat/lon GET strict validation | PASS_WITH_NOTES | `batch_02_cycle8_report.md` | `reviews/batch_02_cycle8_review.md` |
| 03 | AZ-809 — Route POST strict validation + nested DTO chain | PASS_WITH_NOTES | `batch_03_cycle8_report.md` | `reviews/batch_03_cycle8_review.md` |
| 04 | AZ-810 — UAV upload metadata strict validation (multipart envelope) | PASS_WITH_WARNINGS | `batch_04_cycle8_report.md` | `reviews/batch_04_cycle8_review.md` |

Cumulative cross-batch review: `cumulative_review_batches_01-04_cycle8_report.md` — PASS_WITH_WARNINGS. The cumulative scan surfaced no new finding categories beyond what each per-batch review had already captured.

## Code Changes

### Batch 1 — AZ-812 (Region API OSM field rename)

- `SatelliteProvider.Common/DTO/RequestRegionRequest.cs` — properties renamed `Latitude`/`Longitude` → `Lat`/`Lon` + `[JsonPropertyName("lat")]`/`[JsonPropertyName("lon")]` so the wire is `{"lat":..,"lon":..}`.
- `SatelliteProvider.Api/Program.cs::RequestRegion` handler — property access updated.
- `scripts/run-performance-tests.sh` — PT-03/04/05/07 JSON bodies migrated to `lat`/`lon`.

### Batch 2 — AZ-808 + AZ-811 (Region POST + lat/lon GET validators)

- **AZ-808**:
  - `SatelliteProvider.Common/DTO/RequestRegionRequest.cs` — `[JsonRequired]` on every property.
  - `SatelliteProvider.Api/Validators/RegionRequestValidator.cs` (NEW) — 6 rules (id non-empty + range checks on `Lat`/`Lon`/`SizeMeters`/`ZoomLevel`).
  - `SatelliteProvider.Api/Program.cs` — `.WithValidation<RequestRegionRequest>()` chained onto `MapPost("/api/satellite/request", ...)`; removed inline size check.
- **AZ-811**:
  - `SatelliteProvider.Api/DTOs/GetTileByLatLonQuery.cs` (NEW) — nullable record so the validator's `NotNull` rules can fire.
  - `SatelliteProvider.Api/Validators/GetTileByLatLonQueryValidator.cs` (NEW) — `CascadeMode.Stop` + `NotNull` + range checks.
  - `SatelliteProvider.Api/Validators/RejectUnknownQueryParamsEndpointFilter.cs` (NEW) — reusable filter that allow-lists query keys.
  - `SatelliteProvider.Api/Program.cs` — `MapGet("/api/satellite/tiles/latlon", ...)` chain gets `.AddEndpointFilter(new RejectUnknownQueryParamsEndpointFilter(new[] { "lat", "lon", "zoom" }))` + `.WithValidation<GetTileByLatLonQuery>()` + handler `.Value` deref.
  - `SatelliteProvider.Api/Swagger/ParameterDescriptionFilter.cs` — lat/lon/zoom descriptions (post-rename).
- **Shared**:
  - `SatelliteProvider.IntegrationTests/ProblemDetailsAssertions.cs` — promoted `AssertErrorsContainsMention` to a shared helper (closes batch-1 DRY warning).

### Batch 3 — AZ-809 (Route POST validator + nested DTO chain)

- `SatelliteProvider.Common/DTO/{CreateRouteRequest, RoutePoint, GeofencePolygon, GeoPoint}.cs` — `[JsonRequired]` on every non-optional axis; removed implicit defaults; `RoutePoint` carries `[JsonPropertyName("lat")]`/`[JsonPropertyName("lon")]`.
- `SatelliteProvider.Api/Validators/CreateRouteRequestValidator.cs` (NEW) — 7 root rules + `RuleForEach(req => req.Points).SetValidator(new RoutePointValidator())` + `RuleForEach(req => req.Geofences!.Polygons).SetValidator(new GeofencePolygonValidator()).OverridePropertyName("geofences.polygons")`. The `OverridePropertyName` on the deep expression is documented inline + in `api_program.md` because FluentValidation drops the parent path otherwise.
- `SatelliteProvider.Api/Validators/RoutePointValidator.cs` (NEW) — `OverridePropertyName("lat"/"lon")` chained after each range rule so error keys match the wire format.
- `SatelliteProvider.Api/Validators/GeofencePolygonValidator.cs` (NEW) — nested `GeoCornerValidator` (file-private) + cross-field NW-of-SE invariants.
- `SatelliteProvider.Api/Program.cs` — `.WithValidation<CreateRouteRequest>()` + `.Accepts<>` + `.Produces<>` + `.ProducesProblem(400)` on `MapPost("/api/satellite/route", ...)`.
- Service-layer `RouteValidator` retained as defence-in-depth backstop; documented in `route-creation.md` Validator Cleanup Advisory.

### Batch 4 — AZ-810 (UAV upload validator + multipart filter)

- `SatelliteProvider.Common/DTO/UavTileMetadata.cs` — `[JsonRequired]` on `Latitude`/`Longitude`/`TileZoom`/`TileSizeMeters`/`CapturedAt` + `Items`. `FlightId` deliberately stays nullable per AZ-503 anonymous-flight semantics.
- `SatelliteProvider.Api/Validators/UavTileBatchMetadataPayloadValidator.cs` (NEW) — root validator: items NotNull + NotEmpty + count cap + `RuleForEach` dispatching to the per-item validator.
- `SatelliteProvider.Api/Validators/UavTileMetadataValidator.cs` (NEW) — per-item validator: lat/lon/tileZoom ranges + tileSizeMeters > 0 + capturedAt freshness window via injectable `TimeProvider`.
- `SatelliteProvider.Api/Validators/UavUploadValidationFilter.cs` (NEW) — `IEndpointFilter` that intercepts the multipart body, reads the `metadata` form field, deserializes with the strict global `JsonSerializerOptions`, runs the validator, then enforces `items.Count == files.Count`. FluentValidation errors prefixed with `metadata.` so the wire key is `metadata.items[0].latitude` (full path).
- `SatelliteProvider.Api/Program.cs` — `AddTransient<UavUploadValidationFilter>()` + `.AddEndpointFilter<UavUploadValidationFilter>()` + `.Accepts<UavTileBatchUploadRequest>("multipart/form-data")` + `.Produces<UavTileBatchUploadResponse>(200)` + `.ProducesProblem(400)` on `MapPost("/api/satellite/upload", ...)`. Transient lifetime mirrors `RejectUnknownQueryParamsEndpointFilter` (no shared mutable state to amortize).

## Test Changes

### Unit tests (`SatelliteProvider.Tests/Validators/`)

| File | Methods | Batch |
|------|---------|-------|
| `RegionRequestValidatorTests.cs` (NEW) | 11 | 02 (AZ-808) |
| `GetTileByLatLonQueryValidatorTests.cs` (NEW) | 9 | 02 (AZ-811) |
| `RejectUnknownQueryParamsEndpointFilterTests.cs` (NEW) | 4 | 02 (AZ-811) |
| `CreateRouteRequestValidatorTests.cs` (NEW) | 16 | 03 (AZ-809) |
| `RoutePointValidatorTests.cs` (NEW) | 4 | 03 (AZ-809) |
| `GeofencePolygonValidatorTests.cs` (NEW) | 6 | 03 (AZ-809) |
| `UavTileBatchMetadataPayloadValidatorTests.cs` (NEW) | 4 | 04 (AZ-810) |
| `UavTileMetadataValidatorTests.cs` (NEW) | 9 | 04 (AZ-810) |
| **Total** | **63 new unit-test methods** | |

### Integration tests (`SatelliteProvider.IntegrationTests/`)

| File | Methods | Batch |
|------|---------|-------|
| `RegionFieldRenameTests.cs` (NEW) | 2 (happy + legacy-reject) | 01 (AZ-812) |
| `RegionRequestValidationTests.cs` (NEW) | 10 | 02 (AZ-808) |
| `GetTileByLatLonValidationTests.cs` (NEW) | 8 | 02 (AZ-811) |
| `CreateRouteValidationTests.cs` (NEW) | 16 | 03 (AZ-809) |
| `UavUploadValidationTests.cs` (NEW) | 16 | 04 (AZ-810) |
| **Total** | **52 new integration-test methods** | |

`SatelliteProvider.IntegrationTests/Program.cs` was updated by every batch to wire the new test entry points into BOTH `RunSmokeSuite` and `RunFullSuite`.

### Probe scripts (`scripts/`)

| Script | Batch |
|--------|-------|
| `probe_region_validation.sh` (NEW) | 02 (AZ-808) |
| `probe_latlon_validation.sh` (NEW) | 02 (AZ-811) |
| `probe_route_validation.sh` (NEW) | 03 (AZ-809) |
| `probe_upload_validation.sh` (NEW) | 04 (AZ-810) |

Each script exercises happy + every failure mode via `curl` against a running API container; reuses a consistent JWT-mint + status-code-assertion driver structure.

## Documentation Changes

### New contracts (`_docs/02_document/contracts/api/`)

| File | Version | Batch |
|------|---------|-------|
| `region-request.md` | 1.0.0 (NEW) | 02 (AZ-808) |
| `tile-latlon.md` | 1.0.0 (NEW) | 02 (AZ-811) |
| `route-creation.md` | 1.0.0 (NEW) | 03 (AZ-809) |
| `uav-tile-upload.md` | 1.1.0 → 1.2.0 (MINOR bump) | 04 (AZ-810) |

All four reference `error-shape.md` v1.0.0 (cycle 7) for the canonical RFC 7807 body shape.

### Updated docs

- `_docs/02_document/modules/api_program.md` — endpoint descriptions, `Api/Validators` section (8 new entries), `Common/DTO` notes on `[JsonRequired]` placements, DI Registration list (3 new entries — 1 for `RejectUnknownQueryParamsEndpointFilter`, 1 for `UavUploadValidationFilter`, 1 cross-cutting `AddValidatorsFromAssemblyContaining<Program>()` re-anchored).
- `_docs/02_document/modules/common_dtos.md` — DTO descriptions updated with `[JsonRequired]` markers + constraint summaries.
- `_docs/02_document/modules/common_uuidv5.md` — example URL updated to post-rename `?lat=&lon=&zoom=`.
- `_docs/02_document/system-flows.md` — F1 (lat/lon GET) / F2 (region POST) / F4 (route POST) updated with the validator filter step + preconditions + error scenarios.
- `_docs/02_document/tests/blackbox-tests.md` — BT-01/N01/N02/06/N03/N04/N05/18 trigger + pass-criteria updates.
- `_docs/02_document/tests/security-tests.md` — SEC-01/04/05 references the validators + `GlobalExceptionHandler` JsonException branch.
- `README.md` — endpoint example URL updated to post-rename.

## AC Coverage

| AC range | Status | Test source |
|----------|--------|-------------|
| AZ-812 AC-1..AC-6 (6 ACs) | Covered | `RegionFieldRenameTests` (positive + legacy-reject) + `RegionTests` + `IdempotentPostTests` + `SecurityTests` + `scripts/run-performance-tests.sh` PT-03..PT-07. |
| AZ-808 AC-1..AC-8 (8 ACs) | Covered | `RegionRequestValidationTests` (10 methods covering happy + 9 failure modes) + `RegionRequestValidatorTests` (11 unit methods). |
| AZ-811 AC-1..AC-9 (9 ACs) | Covered | `GetTileByLatLonValidationTests` (8 methods) + `GetTileByLatLonQueryValidatorTests` (9 methods) + `RejectUnknownQueryParamsEndpointFilterTests` (4 methods). |
| AZ-809 AC-1..AC-9 (9 ACs) | Covered | `CreateRouteValidationTests` (16 methods) + `CreateRouteRequestValidatorTests` (16) + `RoutePointValidatorTests` (4) + `GeofencePolygonValidatorTests` (6). |
| AZ-810 AC-1..AC-9 (9 ACs) | Covered | `UavUploadValidationTests` (16 methods) + `UavTileBatchMetadataPayloadValidatorTests` (4) + `UavTileMetadataValidatorTests` (9). Existing AZ-488 `UavUploadTests` payloads traced against the new validator rules — all happy paths still valid (AC-9 preserved). |
| **Total** | **41/41 ACs covered.** | No deferrals, no in-scope test gaps. |

## Completeness Gate

`_docs/03_implementation/implementation_completeness_cycle8_report.md` — **PASS**. Every cycle-8 task's promises (validators, filters, endpoint chains, contract docs, [JsonRequired] placements) are implemented as production behaviour; no scaffold / placeholder / NotImplemented markers introduced; named integrations (FluentValidation 12.0.0 DI, `UnmappedMemberHandling.Disallow`, `GlobalExceptionHandler` JsonException branch, `ValidationProblemDetails`, `IEndpointFilter`) are wired against real production code paths in `SatelliteProvider.Api/Program.cs`.

## Handoff to autodev Step 11 (Run Tests)

Per `/implement` Step 16: since the next existing-code flow step is **Run Tests**, the implement skill does **not** run the full suite again. The `test-run` skill owns the full-suite gate to avoid duplicate runs.

Recommendation for `test-run`:

- Full integration-test suite runs via `docker-compose -f docker-compose.yml -f docker-compose.tests.yml up --build --abort-on-container-exit` (per `AGENTS.md`). All four new validation test entry points (`RegionFieldRenameTests`, `RegionRequestValidationTests`, `GetTileByLatLonValidationTests`, `CreateRouteValidationTests`, `UavUploadValidationTests`) are wired into both `RunSmokeSuite` and `RunFullSuite` in `SatelliteProvider.IntegrationTests/Program.cs`.
- AZ-488 happy-path regression coverage (`UavUploadTests`) runs unchanged — verify it stays green to confirm AC-9 (no regression).
- Cycle-7 inventory tests (`TileInventoryValidationTests`, `TileInventoryTests`) run unchanged — verify they stay green to confirm cycle 8 did not regress the cycle 7 foundations.
- Performance harness (`scripts/run-performance-tests.sh`) PT-01 (lat/lon GET) + PT-03..PT-07 (region POST) URLs were updated to the post-rename wire format in batch 1; if `test-run` invokes PT, confirm the budgets remain green.
- If the DNS-flake from cycle 5/6 recurs against `mt1.google.com` / `tile.googleapis.com`, treat it as the same host-network flakiness — out of scope for cycle 8 (this cycle does not touch the Google Maps download path).

## Git

- Branch: `dev` (per `.cursor/rules/git-workflow.mdc`).
- Auto-push: NOT enabled this session — per project convention, commit will happen here; user will be asked about push.
- Commits (planned subject lines, per the git-workflow rule's `[TRACKER-ID] Summary` format):
  - `[AZ-810] Strict validation for POST /api/satellite/upload metadata` (batch 4)
  - (Batches 1-3 already committed individually in their respective autodev runs.)

## Follow-up PBIs Surfaced by the Cumulative Review

These are not blocking cycle-8 closure; they emerged from the cumulative scan as candidates for cycle 9 or later:

| ID candidate | Title | SP | Rationale |
|--------------|-------|----|-----------|
| (open) | Promote `FixedTimeProvider` test helper to `SatelliteProvider.TestSupport` | 1 | The cycle-2 advisory ("if a 3rd consumer appears, promote") was crossed by batch 4; now duplicated across 4 test files. |
| (open) | Promote `PostBatch` multipart helper to a shared `UavUploadMultipartFixture` | 1 | Duplicated between `UavUploadTests.cs` (cycle 2) and `UavUploadValidationTests.cs` (cycle 8 batch 4). |
| (open) | Codify validator-filter decision matrix in `api_program.md::Api/Validators` | 2 | Cycle 8 established three validator filter patterns (JSON body, multipart, query params); document the decision matrix so the next endpoint author knows which to use. |
| (open — coordination required) | Unify response-side `RoutePointDto` to use `lat`/`lon` wire keys (v2.0.0 of `route-creation.md`) | 3 | Cycle 8 standardized input wire on OSM `lat`/`lon`; response DTO still uses `latitude`/`longitude` — breaking change for `GET /api/satellite/route/{id}` clients. |
| (open) | Decide whether to retire service-layer `RouteValidator` now that the API layer strictly validates | 2 | Currently retained as a defence-in-depth backstop; could be removed if no non-HTTP code path enqueues routes. |
