feat: wire SQLite replication between site nodes and fix ConfigurationDatabase tests

Add SiteReplicationActor (runs on every site node) to replicate deployed
configs and store-and-forward buffer operations to the standby peer via
cluster member discovery and fire-and-forget Tell. Wire ReplicationService
handler and pass replication actor to DeploymentManagerActor singleton.

Fix 5 pre-existing ConfigurationDatabase test failures: RowVersion NOT NULL
on SQLite, stale migration name assertion, and seed data count mismatch.

src/ScadaLink.TemplateEngine/Validation/SemanticValidator.cs

@@ -104,6 +104,20 @@ public class SemanticValidator
             }
         }
 
+        // Validate Call-type scripts have parameter definitions
+        foreach (var script in configuration.Scripts)
+        {
+            if (string.Equals(script.TriggerType, "Call", StringComparison.OrdinalIgnoreCase))
+            {
+                if (string.IsNullOrWhiteSpace(script.ParameterDefinitions))
+                {
+                    warnings.Add(ValidationEntry.Warning(ValidationCategory.MissingMetadata,
+                        $"Call-type script '{script.CanonicalName}' has no parameter definitions.",
+                        script.CanonicalName));
+                }
+            }
+        }
+
         // Validate alarm trigger operand types
         foreach (var alarm in configuration.Alarms)
         {