feat(scripts): realign Test Run with runtime API, add anonymous-object calls and instance binding

The Test Run sandbox and Monaco analysis modelled a script API that had
drifted from the site runtime's ScriptGlobals, so real scripts failed to
compile in Test Run. Realign both to the runtime surface
(Instance/Scripts/ExternalSystem/Attributes/Children/Parent) and drop the
duplicate ScriptHost stub so the two cannot diverge again.

- Script calls (Scripts.CallShared, Instance.CallScript, Route.To().Call)
  accept an anonymous object instead of a hand-built dictionary, via a
  shared ScriptArgs normalizer; existing dictionary calls still compile.
- Test Run can optionally bind to a deployed instance, so Instance/
  Attributes/CallScript route to it cross-site; adds site-side
  RouteToGetAttributes/RouteToSetAttributes handlers.
- Adds Test Run panels to the API method and template script editors.
- Fixes the TestDatabaseQuery seed script, which queried a table that
  never existed.

Also commits unrelated in-progress work already in the tree: the health
monitoring report loop, site streaming changes, and the Admin/Design
data-connection and SMTP page reorganization.

src/ScadaLink.InboundAPI/RouteHelper.cs

@@ -1,5 +1,6 @@
 using ScadaLink.Commons.Interfaces.Services;
 using ScadaLink.Commons.Messages.InboundApi;
+using ScadaLink.Commons.Types;
 using ScadaLink.Communication;
 
 namespace ScadaLink.InboundAPI;
@@ -51,18 +52,20 @@ public class RouteTarget
     }
 
     /// <summary>
-    /// Calls a script on the remote instance. Synchronous from API caller's perspective.
+    /// Calls a script on the remote instance. Synchronous from API caller's
+    /// perspective. <paramref name="parameters"/> may be a dictionary or an
+    /// anonymous object (<c>new { name = "Bob" }</c>) — see <see cref="ScriptArgs"/>.
     /// </summary>
     public async Task<object?> Call(
         string scriptName,
-        IReadOnlyDictionary<string, object?>? parameters = null,
+        object? parameters = null,
         CancellationToken cancellationToken = default)
     {
         var siteId = await ResolveSiteAsync(cancellationToken);
         var correlationId = Guid.NewGuid().ToString();
 
         var request = new RouteToCallRequest(
-            correlationId, _instanceCode, scriptName, parameters, DateTimeOffset.UtcNow);
+            correlationId, _instanceCode, scriptName, ScriptArgs.Normalize(parameters), DateTimeOffset.UtcNow);
 
         var response = await _communicationService.RouteToCallAsync(
             siteId, request, cancellationToken);