feat(historian): QuestDb provider, registry + consumer-gated validator, compose env

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe

src/Server/ZB.MOM.WW.OtOpcUa.Host/Configuration/HistorianBackendRegistry.cs

@@ -1,6 +1,7 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Options;
 using ZB.MOM.WW.OtOpcUa.Driver.Historian.Gateway;
+using ZB.MOM.WW.OtOpcUa.Driver.Historian.QuestDb;
 using ZB.MOM.WW.OtOpcUa.Driver.Historian.SqlServer;
 using ZB.MOM.WW.OtOpcUa.Runtime.Historian;
 
@@ -25,11 +26,23 @@ public static class HistorianBackendRegistry
         return o;
     }
 
+    /// <summary>Backend name for the QuestDB historian.</summary>
+    public const string QuestDbBackendName = "QuestDb";
+
+    /// <summary>Binds the <c>ServerHistorian:QuestDb</c> section (shared by the registry and the validator).</summary>
+    public static QuestDbHistorianOptions BindQuestDb(IConfiguration configuration)
+    {
+        var o = new QuestDbHistorianOptions();
+        configuration.GetSection($"{ServerHistorianOptions.SectionName}:QuestDb").Bind(o);
+        return o;
+    }
+
     private static readonly IReadOnlyDictionary<string, Func<ServerHistorianOptions, IConfiguration, IHistorianBackendProvider>> Factories =
         new Dictionary<string, Func<ServerHistorianOptions, IConfiguration, IHistorianBackendProvider>>(StringComparer.OrdinalIgnoreCase)
         {
             [ServerHistorianOptions.GatewayBackendName] = (o, _) => new GatewayHistorianProvider(o),
             [SqlServerBackendName] = (_, c) => new SqlServerHistorianProvider(BindSqlServer(c)),
+            [QuestDbBackendName] = (_, c) => new QuestDbHistorianProvider(BindQuestDb(c)),
         };
 
     /// <summary>The registered backend names, for validation messages.</summary>

src/Server/ZB.MOM.WW.OtOpcUa.Host/Configuration/ServerHistorianOptionsValidator.cs

@@ -78,6 +78,13 @@ public sealed class ServerHistorianOptionsValidator : OptionsValidatorBase<Serve
             return;
         }
 
+        if (string.Equals(options.Backend?.Trim(), HistorianBackendRegistry.QuestDbBackendName, StringComparison.OrdinalIgnoreCase))
+        {
+            foreach (var error in HistorianBackendRegistry.BindQuestDb(_configuration).Validate())
+                builder.RequireThat(false, error);
+            return;
+        }
+
         if (!options.IsGatewayBackend) return;
 
         var endpointValid = Uri.TryCreate(options.Endpoint, UriKind.Absolute, out var uri)

src/Server/ZB.MOM.WW.OtOpcUa.Host/ZB.MOM.WW.OtOpcUa.Host.csproj

@@ -81,6 +81,7 @@
         <ProjectReference Include="..\..\Drivers\ZB.MOM.WW.OtOpcUa.Driver.Galaxy\ZB.MOM.WW.OtOpcUa.Driver.Galaxy.csproj"/>
         <ProjectReference Include="..\..\Drivers\ZB.MOM.WW.OtOpcUa.Driver.Historian.Gateway\ZB.MOM.WW.OtOpcUa.Driver.Historian.Gateway.csproj"/>
         <ProjectReference Include="..\..\Drivers\ZB.MOM.WW.OtOpcUa.Driver.Historian.SqlServer\ZB.MOM.WW.OtOpcUa.Driver.Historian.SqlServer.csproj"/>
+        <ProjectReference Include="..\..\Drivers\ZB.MOM.WW.OtOpcUa.Driver.Historian.QuestDb\ZB.MOM.WW.OtOpcUa.Driver.Historian.QuestDb.csproj"/>
         <ProjectReference Include="..\..\Drivers\ZB.MOM.WW.OtOpcUa.Driver.Modbus\ZB.MOM.WW.OtOpcUa.Driver.Modbus.csproj"/>
         <ProjectReference Include="..\..\Drivers\ZB.MOM.WW.OtOpcUa.Driver.Mqtt\ZB.MOM.WW.OtOpcUa.Driver.Mqtt.csproj"/>
         <ProjectReference Include="..\..\Drivers\ZB.MOM.WW.OtOpcUa.Driver.MTConnect\ZB.MOM.WW.OtOpcUa.Driver.MTConnect.csproj"/>