# Ripple Log — Cycle 4

**Cycle**: 4 (AZ-500 .NET 8 LTS → .NET 10 migration)

## Direct doc updates (Task Step 1–3)

| File | Reason |
|------|--------|
| `_docs/02_document/FINAL_report.md` (lines 5, 15) | Executive summary + technology stack now state `.NET 10` / `C# 14`; cycle-3 → cycle-4 supersession noted inline |
| `_docs/02_document/00_discovery.md` (Tech Stack table, rows: Language / Framework / Logging / API Docs / SDK) | Tech-stack table now states .NET 10 / ASP.NET Core 10 / Swashbuckle 10.1.7 / SDK 10.0.0+; Serilog.AspNetCore 8.0.3 fallback documented inline per AZ-500 Risk #4 |
| `_docs/02_document/architecture.md` (Authentication & Authorization paragraph + §2 Tech Stack table) | JwtBearer + OpenApi versions bumped 8.0.25 → 10.0.7; explicit note that the `TokenValidationParameters` shape is unchanged across the major bump (AZ-487/AZ-494 integration tests are the gate) |
| `_docs/02_document/module-layout.md` (SatelliteProvider.Api PackageReferences row) | JwtBearer + OpenApi versions bumped 8.0.25 → 10.0.7; Swashbuckle 6.6.2 → 10.1.7 noted inline as the Microsoft.OpenApi 2.x compat path |
| `_docs/02_document/modules/api_program.md` (Dependencies + new "Microsoft.OpenApi 2.x refactor note") | The major Swashbuckle/OpenApi bump drove three internal setup edits in `Program.cs` (using-directive, `AddSecurityRequirement` → `Func<OpenApiDocument, OpenApiSecurityRequirement>` + `OpenApiSecuritySchemeReference("Bearer")`, `MapType` → `JsonSchemaType` + `IDictionary<string, IOpenApiSchema>`); Swagger document shape (paths, Bearer Authorize button, multipart upload schema) is preserved exactly; 8 `ASPDEPR002` `WithOpenApi(...)` deprecations recorded as a follow-up PBI |
| `_docs/02_document/modules/tests_unit.md` (Dependencies row) | JwtBearer 8.0.25 → 10.0.7; Microsoft.Extensions.* coordinated bump 9.0.10 → 10.0.7 noted inline |
| `_docs/02_document/deployment/containerization.md` (Docker base + build images) | `mcr.microsoft.com/dotnet/aspnet:8.0` + `sdk:8.0` → `:10.0` |
| `_docs/02_document/deployment/ci_cd_pipeline.md` (01-test image row) | `mcr.microsoft.com/dotnet/sdk:8.0` → `:10.0` |
| `_docs/02_document/tests/traceability-matrix.md` (AC-mapping + Restrictions + Coverage shape notes) | AZ-500 AC-1..AC-8 rows appended; ".NET 8.0 runtime" restriction rewritten to ".NET 10 runtime"; cycle 4 coverage shape note added explaining why no new tests were generated (AZ-500 ACs are infrastructure-level, verified by re-running the existing 78-test suite + build pipeline + manifest grep) |

## Import-graph ripple (Task Step 0.5)

**Source-level edits in this cycle**: `SatelliteProvider.Api/Program.cs` (Microsoft.OpenApi 2.x setup refactor — internal to the Swashbuckle DI registration) and `SatelliteProvider.Api/Swagger/ParameterDescriptionFilter.cs` (single `using` directive change).

**Reverse-dependency search** (`rg "^using SatelliteProvider\.Api\.Swagger"` + project-reference scan):
- Nothing imports `Program.cs` — it's the application entry point.
- Nothing outside `SatelliteProvider.Api` imports `SatelliteProvider.Api.Swagger.ParameterDescriptionFilter` — it's consumed only by `Program.cs` (via Swashbuckle's `c.OperationFilter<ParameterDescriptionFilter>()` registration).

**Ripple set: EMPTY.** No downstream module/component docs are stale because of AZ-500's source-level edits — the public C# surface of `SatelliteProvider.Api` is unchanged; only the internal Swashbuckle wiring moved.

**csproj / global.json / Dockerfile / script edits** are infrastructure manifests with no code-import edges, so they don't contribute to the ripple either.

## Coverage shape notes

- AZ-500 is a runtime/SDK/package migration, not a feature change. Architecture, system flows, data model, contracts, and problem-level ACs are untouched (see Task Step 3/4 conditions in `.cursor/skills/document/workflows/task.md`).
- `_docs/02_document/ripple_log_cycle3.md` is intentionally left as-is — historical record of cycle 3's bumps.
- `_docs/02_document/architecture_compliance_baseline.md` is intentionally left as-is for this cycle. AZ-500 NFR (Compatibility) requires that the cycle-3 baseline still holds post-migration; that gate is the Step 11 full test suite (which passed: 271 unit + integration green) plus the Step 14 Security Audit (next step).