feat(historian): #674 HistoryUpdate posture — future-skew bound, Primary gate, SqlServer v1 accepted, QuestDB TTL pin

- HistoryUpdate items with SourceTimestamp > now + ServerHistorian:HistoryUpdateMaxFutureSkew
  (default 1 day, <=0 disables) => BadOutOfRange in the node manager (every backend, never sent);
  clock injected via OtOpcUaNodeManager.Clock (host TimeProvider).
- HistoryUpdate is Primary-only: off-Primary => BadInvalidState per node, after authorization,
  same IDriverPrimaryRoleSource verdict as the native-ack gate; HistoryRead ungated.
- SqlServer: base schema requirement back to v1; SupportsModifiedTrail (v>=2). On v1 with
  AutoCreateSchema=false: writes/reads/events/retention work, modified reads + HistoryUpdate =>
  BadHistoryOperationUnsupported with nothing sent, retention skips SampleModified, one Warning per boot.
- QuestDB integration test pinning wall-clock TTL (far-future row evicts only partitions older
  than the TTL by the wall clock), with a positive control.
- Docs: Historian.md, Configuration.md, security.md, CLAUDE.md (incl. QuestDB retry duplicates,
  #674.4 anonymous-readable trail with ACL off, #674.5 not implemented).

Co-Authored-By: Claude <noreply@anthropic.com>

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Historian.SqlServer/SqlServerHistorianOptions.cs

@@ -18,8 +18,10 @@ public sealed partial class SqlServerHistorianOptions
 
     /// <summary>
     ///     <c>true</c> creates the schema and applies missing scripts on first use; <c>false</c> only verifies
-    ///     that the required schema version (<c>SqlServerSchemaBootstrapper.RequiredVersion</c>, currently 2) exists and
-    ///     fails every historian call with a clear error otherwise.
+    ///     that the base schema version (<c>SqlServerSchemaBootstrapper.RequiredVersion</c>, 1) exists and fails every
+    ///     historian call with a clear error otherwise. A verified v1 schema (no Part 11 modification trail, script 002
+    ///     not applied) is served with modified reads and HistoryUpdate refused <c>BadHistoryOperationUnsupported</c>
+    ///     and one Warning per boot (Gitea #674).
     /// </summary>
     public bool AutoCreateSchema { get; set; } = true;