feat: Implement PackRunApprovalDecisionService for handling approval decisions

- Added PackRunApprovalDecisionService to manage approval workflows for pack runs.
- Introduced PackRunApprovalDecisionRequest and PackRunApprovalDecisionResult records.
- Implemented logic to apply approval decisions and schedule run resumes based on approvals.
- Updated related tests to validate approval decision functionality.

test: Enhance tests for PackRunApprovalDecisionService

- Created PackRunApprovalDecisionServiceTests to cover various approval scenarios.
- Added in-memory stores for approvals and states to facilitate testing.
- Validated behavior for applying approvals, including handling missing states.

test: Add FilesystemPackRunArtifactUploaderTests for artifact uploads

- Implemented tests for FilesystemPackRunArtifactUploader to ensure correct file handling.
- Verified that missing files are recorded without exceptions and outputs are written as expected.

fix: Update PackRunState creation to include plan reference

- Modified PackRunState creation logic to include the plan in the state.

chore: Refactor service registration in Program.cs

- Updated service registrations in Program.cs to include new approval store and dispatcher services.
- Ensured proper dependency injection for PackRunApprovalDecisionService.

chore: Enhance TaskRunnerServiceOptions for approval store paths

- Added ApprovalStorePath and other paths to TaskRunnerServiceOptions for better configuration.

chore: Update PackRunWorkerService to handle artifact uploads

- Integrated artifact uploading into PackRunWorkerService upon successful run completion.

docs: Update TASKS.md for sprint progress

- Documented progress on approvals workflow and related tasks in TASKS.md.

src/Scheduler/StellaOps.Scheduler.WebService/PolicySimulations/PolicySimulationMetricsProvider.cs

@@ -43,6 +43,7 @@ internal sealed class PolicySimulationMetricsProvider : IPolicySimulationMetrics
     private readonly Histogram<double> _latencyHistogram;
     private readonly object _snapshotLock = new();
     private IReadOnlyDictionary<string, long> _latestQueueSnapshot = new Dictionary<string, long>(StringComparer.Ordinal);
+    private string _latestTenantId = string.Empty;
     private bool _disposed;
 
     public PolicySimulationMetricsProvider(IPolicyRunJobRepository repository, TimeProvider? timeProvider = null)
@@ -83,9 +84,12 @@ internal sealed class PolicySimulationMetricsProvider : IPolicySimulationMetrics
             totalQueueDepth += count;
         }
 
+        var snapshot = new Dictionary<string, long>(queueCounts, StringComparer.Ordinal);
+
         lock (_snapshotLock)
         {
-            _latestQueueSnapshot = queueCounts;
+            _latestQueueSnapshot = snapshot;
+            _latestTenantId = tenantId;
         }
 
         var sampleSize = 200;
@@ -113,7 +117,7 @@ internal sealed class PolicySimulationMetricsProvider : IPolicySimulationMetrics
             Average(durations));
 
         return new PolicySimulationMetricsResponse(
-            new PolicySimulationQueueDepth(totalQueueDepth, queueCounts),
+            new PolicySimulationQueueDepth(totalQueueDepth, snapshot),
             latencyMetrics);
     }
 
@@ -134,16 +138,21 @@ internal sealed class PolicySimulationMetricsProvider : IPolicySimulationMetrics
     private IEnumerable<Measurement<long>> ObserveQueueDepth()
     {
         IReadOnlyDictionary<string, long> snapshot;
+        string tenantId;
         lock (_snapshotLock)
         {
             snapshot = _latestQueueSnapshot;
+            tenantId = _latestTenantId;
         }
 
+        tenantId = string.IsNullOrWhiteSpace(tenantId) ? "unknown" : tenantId;
+
         foreach (var pair in snapshot)
         {
             yield return new Measurement<long>(
                 pair.Value,
-                new KeyValuePair<string, object?>("status", pair.Key));
+                new KeyValuePair<string, object?>("status", pair.Key),
+                new KeyValuePair<string, object?>("tenantId", tenantId));
         }
     }