semi implemented and features implemented save checkpoint

docs/features/unchecked/scanner/java-license-metadata-with-spdx-normalization.md

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+# Java License Metadata with SPDX Normalization
+
+## Module
+Scanner
+
+## Status
+IMPLEMENTED
+
+## Description
+Extracts license metadata from Maven POM license blocks, Gradle metadata, and JAR META-INF/LICENSE files, normalizing free-text license names to SPDX expression identifiers.
+
+## Implementation Details
+- **License Detection**:
+  - `src/Scanner/__Libraries/StellaOps.Scanner.Analyzers.Lang.Java/Internal/License/JavaLicenseDetector.cs` - Detects licenses from POM, Gradle metadata, and META-INF/LICENSE files
+- **SPDX Normalization**:
+  - `src/Scanner/__Libraries/StellaOps.Scanner.Analyzers.Lang.Java/Internal/License/SpdxLicenseNormalizer.cs` - Normalizes free-text license names to SPDX expression identifiers
+
+## E2E Test Plan
+- [ ] Scan a Maven project and verify license metadata is extracted from POM `<licenses>` blocks
+- [ ] Verify free-text license names (e.g., "The Apache License, Version 2.0") are normalized to SPDX identifiers (e.g., "Apache-2.0")
+- [ ] Verify JAR META-INF/LICENSE file content is analyzed for license detection
+- [ ] Verify license information appears in the generated SBOM
+- [ ] Verify multi-license components produce valid SPDX expressions (e.g., "MIT OR Apache-2.0")