semi implemented and features implemented save checkpoint

docs/features/unchecked/cli/evidence-pack-download-and-verification.md

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+# Evidence Pack Download and Verification
+
+## Module
+Cli
+
+## Status
+IMPLEMENTED
+
+## Description
+Full evidence pack system with UI for browsing, exporting, and ribbon/thread views. CLI for bundle export and verification. Dedicated Evidence Locker module for evidence storage.
+
+## Implementation Details
+- **Bundle Export**: `src/Cli/StellaOps.Cli/Commands/BundleExportCommand.cs` -- `BuildExportBundleCommand()` for evidence bundle export
+- **Bundle Verify**: `src/Cli/StellaOps.Cli/Commands/BundleVerifyCommand.cs` -- `BuildVerifyBundleEnhancedCommand()` for bundle verification
+- **Bundle Command Group**: `src/Cli/StellaOps.Cli/Commands/BundleCommandGroup.cs` -- `stella bundle` commands
+- **Pack Client**: `src/Cli/StellaOps.Cli/Services/PackClient.cs` / `IPackClient.cs` -- evidence pack API client
+- **DevPortal Verifier**: `src/Cli/StellaOps.Cli/Services/DevPortalBundleVerifier.cs` / `IDevPortalBundleVerifier.cs`
+- **Tests**: `src/Cli/__Tests/StellaOps.Cli.Tests/Commands/VerifyBundleCommandTests.cs`, `src/Cli/__Tests/StellaOps.Cli.Tests/Services/DevPortalBundleVerifierTests.cs`
+- **Commands**:
+  - `stella bundle export <digest> --output <path>` -- export evidence bundle
+  - `stella bundle verify <path>` -- verify bundle integrity with manifest hash checking
+  - `stella evidence list-packs` -- list available evidence packs
+
+## E2E Test Plan
+- [ ] Run `stella bundle export sha256:abc123 --output ./bundle/` and verify bundle created
+- [ ] Run `stella bundle verify ./bundle/` and verify integrity check passes
+- [ ] Run `stella bundle verify` with tampered bundle and verify failure detected
+- [ ] Run `stella evidence list-packs` and verify packs listed
+- [ ] Verify bundle contains all evidence artifacts (verdict, policy, SBOM, attestations)
+- [ ] Verify `--format json` output