feat(comms): site-side PullAuditEvents handler (#23 M6)

src/ScadaLink.AuditLog/Site/Telemetry/ISiteAuditQueue.cs

@@ -1,34 +0,0 @@
-using ScadaLink.Commons.Entities.Audit;
-
-namespace ScadaLink.AuditLog.Site.Telemetry;
-
-/// <summary>
-/// Site-local audit-log queue surface consumed by <see cref="SiteAuditTelemetryActor"/>.
-/// Extracted from <see cref="SqliteAuditWriter"/> so the telemetry actor can be
-/// unit-tested against a stub without touching SQLite. <see cref="SqliteAuditWriter"/>
-/// implements this interface; production wiring injects the same instance.
-/// </summary>
-/// <remarks>
-/// Only the two methods the drain loop needs are exposed — the hot-path
-/// <c>WriteAsync</c> stays on <see cref="Commons.Interfaces.Services.IAuditWriter"/>
-/// (script-thread surface), separated by concern from the
-/// telemetry-actor surface so each side can be mocked independently.
-/// </remarks>
-public interface ISiteAuditQueue
-{
-    /// <summary>
-    /// Returns up to <paramref name="limit"/> rows currently in
-    /// <see cref="ScadaLink.Commons.Types.Enums.AuditForwardState.Pending"/>,
-    /// oldest first. Idempotent — repeated calls before
-    /// <see cref="MarkForwardedAsync"/> will yield the same rows again.
-    /// </summary>
-    Task<IReadOnlyList<AuditEvent>> ReadPendingAsync(int limit, CancellationToken ct = default);
-
-    /// <summary>
-    /// Flips the supplied EventIds from
-    /// <see cref="ScadaLink.Commons.Types.Enums.AuditForwardState.Pending"/> to
-    /// <see cref="ScadaLink.Commons.Types.Enums.AuditForwardState.Forwarded"/>.
-    /// Non-existent or already-forwarded ids are silent no-ops.
-    /// </summary>
-    Task MarkForwardedAsync(IReadOnlyList<Guid> eventIds, CancellationToken ct = default);
-}

src/ScadaLink.AuditLog/Site/Telemetry/SiteAuditTelemetryActor.cs

@@ -3,6 +3,7 @@ using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using ScadaLink.AuditLog.Telemetry;
 using ScadaLink.Commons.Entities.Audit;
+using ScadaLink.Commons.Interfaces.Services;
 using ScadaLink.Communication.Grpc;
 
 namespace ScadaLink.AuditLog.Site.Telemetry;