semi implemented and features implemented save checkpoint

docs/features/unchecked/cli/sbom-analytics-cli-commands.md

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+# SBOM Analytics CLI Commands
+
+## Module
+Cli
+
+## Status
+IMPLEMENTED
+
+## Description
+CLI command group for SBOM analytics queries (stella analytics suppliers, licenses, vulnerabilities, backlog, attestation-coverage, trends) with tabular and CSV output formats.
+
+## Implementation Details
+- **Command Group**: `src/Cli/StellaOps.Cli/Commands/AnalyticsCommandGroup.cs` -- `AnalyticsCommandGroup` (public static class)
+- **Commands**:
+  - `stella analytics suppliers` -- supplier distribution analysis
+  - `stella analytics licenses` -- license distribution analysis
+  - `stella analytics vulnerabilities` -- vulnerability statistics
+  - `stella analytics backlog` -- vulnerability backlog metrics
+  - `stella analytics attestation-coverage` -- attestation coverage report
+  - `stella analytics trends` -- trend analysis over time
+- **Output formats**: table, CSV, JSON
+
+## E2E Test Plan
+- [ ] Run `stella analytics suppliers` and verify supplier distribution
+- [ ] Run `stella analytics licenses` and verify license breakdown
+- [ ] Run `stella analytics vulnerabilities` and verify vulnerability statistics
+- [ ] Run `stella analytics backlog` and verify backlog metrics
+- [ ] Run `stella analytics attestation-coverage` and verify coverage percentages
+- [ ] Run `stella analytics trends --format csv` and verify CSV output
+- [ ] Verify `--format json` output