docs: add XML doc comments across src + Sister Projects section in CLAUDE.md

Bulk CommentChecker pass: fills in <param>/<inheritdoc> tags on public
APIs across all 23 src/ projects so the doc-coverage gate is green. Also
adds a Sister Projects section to CLAUDE.md pointing at the MxAccess
Gateway and OtOpcUa sibling repos, and gitignores local credential
captures (*login*.txt) and the wonder-app-vd03 deploy/ artifacts.

src/ScadaLink.AuditLog/Central/SiteAuditReconciliationActor.cs

@@ -95,6 +95,14 @@ public class SiteAuditReconciliationActor : ReceiveActor
 
     private ICancelable? _timer;
 
+    /// <summary>
+    /// Initializes the reconciliation actor with its dependencies and registers the tick handler.
+    /// </summary>
+    /// <param name="sites">Enumerates the known sites to reconcile.</param>
+    /// <param name="client">Client used to pull audit events from individual sites.</param>
+    /// <param name="services">Root service provider for opening a per-tick DI scope.</param>
+    /// <param name="options">Reconciliation configuration (interval, page size).</param>
+    /// <param name="logger">Logger for reconciliation diagnostics.</param>
     public SiteAuditReconciliationActor(
         ISiteEnumerator sites,
         IPullAuditEventsClient client,
@@ -117,6 +125,7 @@ public class SiteAuditReconciliationActor : ReceiveActor
         ReceiveAsync<ReconciliationTick>(_ => OnTickAsync());
     }
 
+    /// <inheritdoc />
     protected override void PreStart()
     {
         base.PreStart();
@@ -129,6 +138,7 @@ public class SiteAuditReconciliationActor : ReceiveActor
             sender: Self);
     }
 
+    /// <inheritdoc />
     protected override void PostStop()
     {
         _timer?.Cancel();
@@ -301,11 +311,7 @@ public class SiteAuditReconciliationActor : ReceiveActor
         }
     }
 
-    /// <summary>
-    /// Resume on any unhandled exception inside the receive — the singleton
-    /// MUST stay alive even if the per-tick try/catch leaks. Restart would
-    /// reset the cursors (safe but wasteful); Resume preserves them.
-    /// </summary>
+    /// <inheritdoc />
     protected override SupervisorStrategy SupervisorStrategy()
     {
         return new OneForOneStrategy(