stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.Provcache/ProvcacheService.Prune.cs

@@ -0,0 +1,18 @@
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+
+namespace StellaOps.Provcache;
+
+public sealed partial class ProvcacheService
+{
+    /// <inheritdoc />
+    public async Task<long> PruneExpiredAsync(CancellationToken cancellationToken = default)
+    {
+        var pruned = await _repository.DeleteExpiredAsync(_timeProvider.GetUtcNow(), cancellationToken)
+            .ConfigureAwait(false);
+
+        _logger.LogInformation("Pruned {Count} expired cache entries", pruned);
+        return pruned;
+    }
+}