feat(api): Implement Console Export Client and Models

- Added ConsoleExportClient for managing export requests and responses.
- Introduced ConsoleExportRequest and ConsoleExportResponse models.
- Implemented methods for creating and retrieving exports with appropriate headers.

feat(crypto): Add Software SM2/SM3 Cryptography Provider

- Implemented SmSoftCryptoProvider for software-only SM2/SM3 cryptography.
- Added support for signing and verification using SM2 algorithm.
- Included hashing functionality with SM3 algorithm.
- Configured options for loading keys from files and environment gate checks.

test(crypto): Add unit tests for SmSoftCryptoProvider

- Created comprehensive tests for signing, verifying, and hashing functionalities.
- Ensured correct behavior for key management and error handling.

feat(api): Enhance Console Export Models

- Expanded ConsoleExport models to include detailed status and event types.
- Added support for various export formats and notification options.

test(time): Implement TimeAnchorPolicyService tests

- Developed tests for TimeAnchorPolicyService to validate time anchors.
- Covered scenarios for anchor validation, drift calculation, and policy enforcement.

src/Policy/StellaOps.Policy.Registry/Telemetry/PolicyRegistryActivitySource.cs

@@ -0,0 +1,180 @@
+using System.Diagnostics;
+
+namespace StellaOps.Policy.Registry.Telemetry;
+
+/// <summary>
+/// Activity source for Policy Registry tracing.
+/// Provides distributed tracing capabilities for all registry operations.
+/// </summary>
+public static class PolicyRegistryActivitySource
+{
+    public const string SourceName = "StellaOps.Policy.Registry";
+
+    public static readonly ActivitySource ActivitySource = new(SourceName, "1.0.0");
+
+    // Pack operations
+    public static Activity? StartCreatePack(string tenantId, string packName)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.pack.create", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_name", packName);
+        return activity;
+    }
+
+    public static Activity? StartGetPack(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.pack.get", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    public static Activity? StartUpdatePack(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.pack.update", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    public static Activity? StartDeletePack(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.pack.delete", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    // Compilation operations
+    public static Activity? StartCompile(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.compile", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    public static Activity? StartValidateRule(string tenantId, string ruleId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.rule.validate", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("rule_id", ruleId);
+        return activity;
+    }
+
+    // Simulation operations
+    public static Activity? StartSimulation(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.simulate", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    public static Activity? StartBatchSimulation(string tenantId, Guid packId, int inputCount)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.batch_simulate", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        activity?.SetTag("input_count", inputCount);
+        return activity;
+    }
+
+    // Review operations
+    public static Activity? StartSubmitReview(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.review.submit", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    public static Activity? StartApproveReview(string tenantId, string reviewId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.review.approve", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("review_id", reviewId);
+        return activity;
+    }
+
+    public static Activity? StartRejectReview(string tenantId, string reviewId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.review.reject", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("review_id", reviewId);
+        return activity;
+    }
+
+    // Publish operations
+    public static Activity? StartPublish(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.publish", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    public static Activity? StartRevoke(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.revoke", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    public static Activity? StartVerifyAttestation(string tenantId, Guid packId)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.attestation.verify", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        return activity;
+    }
+
+    // Promotion operations
+    public static Activity? StartPromotion(string tenantId, Guid packId, string targetEnvironment)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.promote", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        activity?.SetTag("target_environment", targetEnvironment);
+        return activity;
+    }
+
+    public static Activity? StartRollback(string tenantId, string environment)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.rollback", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("environment", environment);
+        return activity;
+    }
+
+    public static Activity? StartValidatePromotion(string tenantId, Guid packId, string targetEnvironment)
+    {
+        var activity = ActivitySource.StartActivity("policy_registry.promotion.validate", ActivityKind.Internal);
+        activity?.SetTag("tenant_id", tenantId);
+        activity?.SetTag("pack_id", packId.ToString());
+        activity?.SetTag("target_environment", targetEnvironment);
+        return activity;
+    }
+
+    // Helper methods
+    public static void SetError(this Activity? activity, Exception ex)
+    {
+        if (activity is null) return;
+
+        activity.SetStatus(ActivityStatusCode.Error, ex.Message);
+        activity.SetTag("error.type", ex.GetType().FullName);
+        activity.SetTag("error.message", ex.Message);
+    }
+
+    public static void SetSuccess(this Activity? activity)
+    {
+        activity?.SetStatus(ActivityStatusCode.Ok);
+    }
+
+    public static void SetResult(this Activity? activity, string key, object? value)
+    {
+        if (activity is null || value is null) return;
+        activity.SetTag($"result.{key}", value.ToString());
+    }
+}