semi implemented and features implemented save checkpoint

docs/implplan-blocked/audits/csproj-standards/Tools/GoldenPairs/StellaOps.Tools.GoldenPairs.md

@@ -0,0 +1,46 @@
+# Audit - StellaOps.Tools.GoldenPairs
+
+## Project
+- Path: `src/Tools/GoldenPairs/StellaOps.Tools.GoldenPairs.csproj`
+- Module: `Tools`
+- Kind: `Tool`
+- SDK: `Microsoft.NET.Sdk`
+- TargetFramework: `net10.0`
+- Audit date (UTC): 2026-01-30
+
+## Coding Standards Findings
+- Status: FAIL
+- Nullable: enable
+- TreatWarningsAsErrors: explicit true
+- Deterministic: inherited true
+- 100-line rule violations: 5
+- Service locator usage (BuildServiceProvider/GetService): 1
+- Analyzer enforcement: missing repo-wide (see summary).
+
+### Details
+- 100-line files:
+  - `src/Tools/GoldenPairs/GoldenPairsApp.cs` (319 lines)
+  - `src/Tools/GoldenPairs/Services/DiffPipelineService.cs` (288 lines)
+  - `src/Tools/GoldenPairs/Services/PackageMirrorService.cs` (285 lines)
+  - `src/Tools/GoldenPairs/Services/GoldenPairLoader.cs` (210 lines)
+  - `src/Tools/GoldenPairs/Models/GoldenPairMetadata.cs` (172 lines)
+- Service locator matches:
+  - `src/Tools/GoldenPairs/Services/GoldenPairsServiceFactory.cs`:49 return services.BuildServiceProvider();
+
+### Fix Guidance
+- Split files over 100 lines into smaller types or partials.
+- Replace service locator usage with constructor injection.
+
+## Testing Fullness Findings
+- Status: FAIL
+- Expected layers: Unit, CLI, Offline
+- Detected test projects: src/Tools/__Tests/StellaOps.Tools.GoldenPairs.Tests/StellaOps.Tools.GoldenPairs.Tests.csproj [Unit]
+- Missing layers: CLI, Offline
+
+### Manual checks required
+- Observability contract tests for WebService/Worker.
+- Offline execution (tests must run without network access).
+
+### Fix Guidance
+- Add offline/airgap coverage with fixtures only.
+- Add CLI tests for exit codes and golden output.