fix(site-runtime): resolve SiteRuntime-004..011 — deploy-after-persist, remove reflection, deterministic IDs, non-blocking startup, dedicated script scheduler, config-change detection, semantic trust-model check

src/ScadaLink.SiteRuntime/SiteRuntimeOptions.cs

@@ -36,4 +36,12 @@ public class SiteRuntimeOptions
     /// Default: 1000.
     /// </summary>
     public int StreamBufferSize { get; set; } = 1000;
+
+    /// <summary>
+    /// SiteRuntime-009: number of dedicated threads in the script-execution scheduler.
+    /// Script and alarm on-trigger bodies run on these threads instead of the shared
+    /// .NET thread pool, so blocking script I/O cannot starve the global pool.
+    /// Default: 8.
+    /// </summary>
+    public int ScriptExecutionThreadCount { get; set; } = 8;
 }