semi implemented and features implemented save checkpoint

docs/features/unchecked/scanner/package-name-normalization-service.md

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+# Package Name Normalization Service
+
+## Module
+Scanner
+
+## Status
+IMPLEMENTED
+
+## Description
+Cross-ecosystem package name normalization service handling aliases between package managers (apt/dpkg, pip eggs/wheels/PyPI, npm scoped/unscoped, Go module/package paths). Uses a JSON alias map with 326 lines of known aliases and provides file-hash fingerprint fallback for unresolvable packages.
+
+## Implementation Details
+- **Normalization Service**:
+  - `src/Scanner/__Libraries/StellaOps.Scanner.Core/Normalization/IPackageNameNormalizer.cs` - `IPackageNameNormalizer` interface for cross-ecosystem package name normalization
+  - `src/Scanner/__Libraries/StellaOps.Scanner.Core/Normalization/PackageNameNormalizer.cs` - `PackageNameNormalizer` handles aliases between package managers (apt/dpkg, pip eggs/wheels/PyPI, npm scoped/unscoped, Go module/package paths), using a JSON alias map and file-hash fingerprint fallback
+- **DI Registration**: `src/Scanner/__Libraries/StellaOps.Scanner.Core/Normalization/NormalizationServiceCollectionExtensions.cs`
+
+## E2E Test Plan
+- [ ] Normalize an apt package name and verify it maps to the correct dpkg equivalent
+- [ ] Normalize a pip egg/wheel package name and verify it maps to the canonical PyPI name
+- [ ] Normalize an npm scoped package and verify correct normalization (e.g., `@scope/package`)
+- [ ] Normalize a Go module path and verify package path aliasing works correctly
+- [ ] Verify the JSON alias map resolves known cross-ecosystem aliases (e.g., `libssl-dev` to `openssl`)
+- [ ] Verify the file-hash fingerprint fallback produces a consistent identifier for unresolvable packages