semi implemented and features implemented save checkpoint

docs/implplan-blocked/audits/csproj-standards/__Libraries/StellaOps.Spdx3/StellaOps.Spdx3.md

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+# Audit - StellaOps.Spdx3
+
+## Project
+- Path: `src/__Libraries/StellaOps.Spdx3/StellaOps.Spdx3.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: 18
+- Service locator usage (BuildServiceProvider/GetService): 0
+- Analyzer enforcement: missing repo-wide (see summary).
+
+### Details
+- 100-line files:
+  - `src/__Libraries/StellaOps.Spdx3/Spdx3Parser.cs` (897 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Validation/Spdx3Validator.cs` (344 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Software/Spdx3Package.cs` (319 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3ExternalRef.cs` (291 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3Relationship.cs` (288 lines)
+  - `src/__Libraries/StellaOps.Spdx3/JsonLd/Spdx3ContextResolver.cs` (247 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Security/Spdx3Vulnerability.cs` (239 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3IntegrityMethod.cs` (225 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3Document.cs` (223 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Spdx3VersionDetector.cs` (203 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3ProfileIdentifier.cs` (179 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Build/BuildProfileValidator.cs` (165 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Build/Spdx3Build.cs` (155 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Validation/ISpdx3Validator.cs` (155 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3ExternalIdentifier.cs` (148 lines)
+  - `src/__Libraries/StellaOps.Spdx3/ISpdx3Parser.cs` (142 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3CreationInfo.cs` (139 lines)
+  - `src/__Libraries/StellaOps.Spdx3/Model/Spdx3Element.cs` (113 lines)
+- Service locator matches:
+  - none
+
+### Fix Guidance
+- Split files over 100 lines into smaller types or partials.
+
+## Testing Fullness Findings
+- Status: PASS
+- Expected layers: Unit
+- Detected test projects: src/__Libraries/__Tests/StellaOps.Spdx3.Tests/StellaOps.Spdx3.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.