merge: audit-config query fix + rig live-probe seed (register rows 46, 48) — ValueTuple serialized as {} fixed with AuditLogQueryResult record + ITuple guard; docker/seed-live-probe.sh

src/ZB.MOM.WW.ScadaBridge.ManagementService/ManagementActor.cs

@@ -90,10 +90,35 @@ public class ManagementActor : ReceiveActor
     /// Serializes a command result to JSON using <see cref="System.Text.Json"/> — the same
     /// serializer the HTTP endpoint uses — with cycle-safe settings.
     /// </summary>
+    /// <remarks>
+    /// Rejects tuple results outright. <see cref="System.Text.Json"/> writes only
+    /// properties by default, and a <c>ValueTuple</c> exposes its members as public
+    /// <em>fields</em> — so a handler that returns a repository's
+    /// <c>(rows, totalCount)</c> tuple serializes to the literal <c>{}</c>, silently
+    /// handing every caller an empty result with no error anywhere in the stack. That is
+    /// exactly how <c>audit-config query</c> shipped broken (deferred-work register row
+    /// 46). Failing loudly here converts the whole class of bug into an immediate,
+    /// obvious error the first time the handler is exercised; the fix is always to
+    /// project the tuple into a named result record before returning it.
+    /// </remarks>
     /// <param name="result">The command result object to serialize, or null.</param>
     /// <returns>The JSON string representation of <paramref name="result"/>, or <c>"null"</c> when null.</returns>
-    public static string SerializeResult(object? result) =>
-        JsonSerializer.Serialize(result, ResultSerializerOptions);
+    /// <exception cref="InvalidOperationException">
+    /// Thrown when <paramref name="result"/> is a tuple, which cannot round-trip through
+    /// the JSON contract.
+    /// </exception>
+    public static string SerializeResult(object? result)
+    {
+        if (result is System.Runtime.CompilerServices.ITuple)
+        {
+            throw new InvalidOperationException(
+                $"Management command results must be named types, not tuples — "
+                + $"System.Text.Json serializes '{result.GetType().Name}' to '{{}}' because tuple "
+                + "members are fields, not properties. Project the tuple into a result record.");
+        }
+
+        return JsonSerializer.Serialize(result, ResultSerializerOptions);
+    }
 
     private void HandleEnvelope(ManagementEnvelope envelope)
     {
@@ -2578,12 +2603,24 @@ public class ManagementActor : ReceiveActor
     // Audit Log handler
     // ========================================================================
 
+    /// <summary>
+    /// Queries the configuration-change audit trail and projects the repository's
+    /// ValueTuple into <see cref="AuditLogQueryResult"/>.
+    /// </summary>
+    /// <remarks>
+    /// The projection is load-bearing, not cosmetic: returning the repository tuple
+    /// directly made <see cref="SerializeResult"/> emit the literal <c>{}</c> (ValueTuple
+    /// exposes <c>Item1</c>/<c>Item2</c> as fields, which System.Text.Json skips), so
+    /// <c>audit-config query</c> reported an empty result for every filter combination
+    /// regardless of how many rows matched — deferred-work register row 46.
+    /// </remarks>
     private static async Task<object?> HandleQueryAuditLog(IServiceProvider sp, QueryAuditLogCommand cmd)
     {
         var repo = sp.GetRequiredService<ICentralUiRepository>();
-        return await repo.GetAuditLogEntriesAsync(
+        var (entries, totalCount) = await repo.GetAuditLogEntriesAsync(
             cmd.User, cmd.EntityType, cmd.Action, cmd.From, cmd.To,
             page: cmd.Page, pageSize: cmd.PageSize);
+        return new AuditLogQueryResult(entries, totalCount);
     }
 
     // ========================================================================