# Offline SBOM Verification CLI

## Module
Cli

## Status
IMPLEMENTED

## Description
CLI command `stella sbom verify` for offline SBOM verification including signature validation, canonical hash recomputation, and format compliance checks for CycloneDX/SPDX documents without network connectivity.

## Implementation Details
- **Command Group**: `src/Cli/StellaOps.Cli/Commands/SbomCommandGroup.cs` -- `SbomCommandGroup` for `stella sbom` commands
- **SBOM Client**: `src/Cli/StellaOps.Cli/Services/SbomClient.cs` / `ISbomClient.cs` -- SBOM operations
- **SBOMer Client**: `src/Cli/StellaOps.Cli/Services/SbomerClient.cs` / `ISbomerClient.cs` -- SBOM generation client
- **Tests**: `src/Cli/__Tests/StellaOps.Cli.Tests/SbomCommandTests.cs`, `src/Cli/__Tests/StellaOps.Cli.Tests/Integration/SbomCanonicalVerifyIntegrationTests.cs`, `SbomVerifyIntegrationTests.cs`
- **Commands**:
  - `stella sbom verify <file>` -- verify SBOM offline. Options: `--format cdx|spdx`, `--check-signature`, `--recompute-hash`

## E2E Test Plan
- [ ] Run `stella sbom verify ./sbom.cdx.json` and verify CycloneDX compliance check
- [ ] Run `stella sbom verify ./sbom.spdx.json` and verify SPDX compliance check
- [ ] Run with `--check-signature` and verify SBOM signature validation
- [ ] Run with `--recompute-hash` and verify canonical hash matches
- [ ] Verify offline operation (no network required)
- [ ] Verify invalid SBOM produces clear error with specific violations