Add integration tests for Proof Chain and Reachability workflows

- Implement ProofChainTestFixture for PostgreSQL-backed integration tests.
- Create StellaOps.Integration.ProofChain project with necessary dependencies.
- Add ReachabilityIntegrationTests to validate call graph extraction and reachability analysis.
- Introduce ReachabilityTestFixture for managing corpus and fixture paths.
- Establish StellaOps.Integration.Reachability project with required references.
- Develop UnknownsWorkflowTests to cover the unknowns lifecycle: detection, ranking, escalation, and resolution.
- Create StellaOps.Integration.Unknowns project with dependencies for unknowns workflow.

src/Cli/StellaOps.Cli/Commands/CommandFactory.cs

@@ -3,6 +3,7 @@ using System.CommandLine;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Logging;
+using StellaOps.Cli.Commands.Proof;
 using StellaOps.Cli.Configuration;
 using StellaOps.Cli.Extensions;
 using StellaOps.Cli.Plugins;
@@ -87,6 +88,18 @@ internal static class CommandFactory
         root.Add(BuildSymbolsCommand(services, verboseOption, cancellationToken));
         root.Add(SystemCommandBuilder.BuildSystemCommand(services, verboseOption, cancellationToken));
 
+        // Sprint: SPRINT_3500_0004_0001_cli_verbs - New command groups
+        root.Add(ScoreReplayCommandGroup.BuildScoreCommand(services, verboseOption, cancellationToken));
+        root.Add(UnknownsCommandGroup.BuildUnknownsCommand(services, verboseOption, cancellationToken));
+        root.Add(ProofCommandGroup.BuildProofCommand(services, verboseOption, cancellationToken));
+
+        // Add scan graph subcommand to existing scan command
+        var scanCommand = root.Children.OfType<Command>().FirstOrDefault(c => c.Name == "scan");
+        if (scanCommand is not null)
+        {
+            scanCommand.Add(ScanGraphCommandGroup.BuildScanGraphCommand(services, verboseOption, cancellationToken));
+        }
+
         var pluginLogger = loggerFactory.CreateLogger<CliCommandModuleLoader>();
         var pluginLoader = new CliCommandModuleLoader(services, options, pluginLogger);
         pluginLoader.RegisterModules(root, verboseOption, cancellationToken);