semi implemented and features implemented save checkpoint

docs/implplan-blocked/audits/csproj-standards/__Libraries/StellaOps.TestKit/StellaOps.TestKit.md

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+# Audit - StellaOps.TestKit
+
+## Project
+- Path: `src/__Libraries/StellaOps.TestKit/StellaOps.TestKit.csproj`
+- Module: `__Libraries`
+- Kind: `Library`
+- 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: 42
+- Service locator usage (BuildServiceProvider/GetService): 3
+- Analyzer enforcement: missing repo-wide (see summary).
+
+### Details
+- 100-line files:
+  - `src/__Libraries/StellaOps.TestKit/Interop/VersionCompatibilityFixture.cs` (409 lines)
+  - `src/__Libraries/StellaOps.TestKit/Environment/SkewTestRunner.cs` (398 lines)
+  - `src/__Libraries/StellaOps.TestKit/Analysis/IntentCoverageReport.cs` (396 lines)
+  - `src/__Libraries/StellaOps.TestKit/Longevity/StabilityMetrics.cs` (383 lines)
+  - `src/__Libraries/StellaOps.TestKit/Observability/MetricsContractAssert.cs` (360 lines)
+  - `src/__Libraries/StellaOps.TestKit/Incident/IncidentTestGenerator.cs` (358 lines)
+  - `src/__Libraries/StellaOps.TestKit/Interop/SchemaVersionMatrix.cs` (352 lines)
+  - `src/__Libraries/StellaOps.TestKit/Fixtures/PostgresFixture.cs` (340 lines)
+  - `src/__Libraries/StellaOps.TestKit/Evidence/EvidenceChainReporter.cs` (339 lines)
+  - `src/__Libraries/StellaOps.TestKit/Templates/WebServiceTestBase.cs` (325 lines)
+  - `src/__Libraries/StellaOps.TestKit/Templates/FlakyToDeterministicPattern.cs` (286 lines)
+  - `src/__Libraries/StellaOps.TestKit/Connectors/ConnectorSecurityTestBase.cs` (286 lines)
+  - `src/__Libraries/StellaOps.TestKit/TestCategories.cs` (282 lines)
+  - `src/__Libraries/StellaOps.TestKit/BlastRadius/BlastRadiusTestRunner.cs` (278 lines)
+  - `src/__Libraries/StellaOps.TestKit/Environment/EnvironmentProfile.cs` (270 lines)
+  - `src/__Libraries/StellaOps.TestKit/Templates/QueryDeterminismTests.cs` (258 lines)
+  - `src/__Libraries/StellaOps.TestKit/Fixtures/ValkeyFixture.cs` (253 lines)
+  - `src/__Libraries/StellaOps.TestKit/Fixtures/ContractTestHelper.cs` (242 lines)
+  - `src/__Libraries/StellaOps.TestKit/Observability/LogContractAssert.cs` (242 lines)
+  - `src/__Libraries/StellaOps.TestKit/BlastRadius/BlastRadiusValidator.cs` (241 lines)
+  - `src/__Libraries/StellaOps.TestKit/Incident/TestScaffold.cs` (232 lines)
+  - `src/__Libraries/StellaOps.TestKit/Longevity/StabilityTestRunner.cs` (231 lines)
+  - `src/__Libraries/StellaOps.TestKit/Templates/StorageConcurrencyTests.cs` (229 lines)
+  - `src/__Libraries/StellaOps.TestKit/Evidence/EvidenceChainAssert.cs` (228 lines)
+  - `src/__Libraries/StellaOps.TestKit/Observability/OTelContractAssert.cs` (223 lines)
+  - `src/__Libraries/StellaOps.TestKit/Templates/CacheIdempotencyTests.cs` (217 lines)
+  - `src/__Libraries/StellaOps.TestKit/Connectors/ConnectorHttpFixture.cs` (217 lines)
+  - `src/__Libraries/StellaOps.TestKit/Connectors/ConnectorLiveSchemaTestBase.cs` (209 lines)
+  - `src/__Libraries/StellaOps.TestKit/Connectors/ConnectorTestBase.cs` (205 lines)
+  - `src/__Libraries/StellaOps.TestKit/Connectors/FixtureUpdater.cs` (193 lines)
+  - `src/__Libraries/StellaOps.TestKit/Fixtures/WebServiceFixture.cs` (191 lines)
+  - `src/__Libraries/StellaOps.TestKit/Connectors/ConnectorResilienceTestBase.cs` (162 lines)
+  - `src/__Libraries/StellaOps.TestKit/Observability/OtelCapture.cs` (162 lines)
+  - `src/__Libraries/StellaOps.TestKit/Fixtures/HttpFixtureServer.cs` (156 lines)
+  - `src/__Libraries/StellaOps.TestKit/Assertions/CanonicalJsonAssert.cs` (148 lines)
+  - `src/__Libraries/StellaOps.TestKit/Templates/StorageIdempotencyTests.cs` (147 lines)
+  - `src/__Libraries/StellaOps.TestKit/Deterministic/DeterministicRandom.cs` (126 lines)
+  - `src/__Libraries/StellaOps.TestKit/Incident/IncidentMetadata.cs` (124 lines)
+  - `src/__Libraries/StellaOps.TestKit/Assertions/SnapshotAssert.cs` (114 lines)
+  - `src/__Libraries/StellaOps.TestKit/Extensions/HttpClientTestExtensions.cs` (111 lines)
+  - `src/__Libraries/StellaOps.TestKit/Deterministic/DeterministicTime.cs` (108 lines)
+  - `src/__Libraries/StellaOps.TestKit/Evidence/RequirementAttribute.cs` (102 lines)
+- Service locator matches:
+  - `src/__Libraries/StellaOps.TestKit/Connectors/ConnectorHttpFixture.cs`:187 _serviceProvider = services.BuildServiceProvider();
+  - `src/__Libraries/StellaOps.TestKit/Connectors/ConnectorLiveSchemaTestBase.cs`:46 return services.BuildServiceProvider();
+  - `src/__Libraries/StellaOps.TestKit/Fixtures/HttpFixtureServer.cs`:93 /// using var provider = 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: PASS
+- Expected layers: Unit
+- Detected test projects: src/__Libraries/__Tests/StellaOps.TestKit.Tests/StellaOps.TestKit.Tests.csproj [Unit], src/__Analyzers/StellaOps.TestKit.Analyzers.Tests/StellaOps.TestKit.Analyzers.Tests.csproj [Unit]
+- Missing layers: none
+
+### Manual checks required
+- Observability contract tests for WebService/Worker.
+- Offline execution (tests must run without network access).
+
+### Fix Guidance
+- None.