v3(b1-opcuaclient): re-key OpcUaClient resolution to RawPath via RawTags

NamespaceMap now carries a RawPath -> upstream node id table built from the
deployed RawTagEntry list (reads each tag's TagConfig.nodeId, threads
WriteIdempotent). Under v3 the read/write/subscribe/history reference handed to
the driver is the tag's RawPath identity; the driver resolves it in two stages:
RawPath -> nodeId string (instance TryResolve) -> live NodeId re-bound against
the session (static TryResolve). Alarm ConditionId + event-history sourceName
stay on the direct session parse (they are upstream node ids, not RawPaths).

- Options: add IReadOnlyList<RawTagEntry> RawTags (Contracts now refs Core.Abstractions).
- Factory: RawTags binds straight into options (no separate DTO); EndpointUrl kept.
- Browser: unchanged (emits neutral BrowseNode DTOs, no TagConfig FullName key).
- Tests: 138 green; new RawPath resolution + factory-binding coverage; migrated
  the stale-session ReadRaw test to author a resolving RawTag.

Contracts + Driver + Browser build clean (0 warn). Wave C wires endpoint->DeviceConfig
and the deploy artifact that populates RawTags.

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Tests/OpcUaClientDriverFactoryTests.cs

@@ -33,4 +33,46 @@ public class OpcUaClientDriverFactoryTests
     public void CreateInstance_throws_on_null_json_deserialisation()
         => Should.Throw<System.InvalidOperationException>(
             () => OpcUaClientDriverFactoryExtensions.CreateInstance("drv-1", "null", NullLoggerFactory.Instance));
+
+    private const string RawTagsConfig =
+        """
+        {
+          "EndpointUrl": "opc.tcp://host:4840",
+          "RawTags": [
+            { "rawPath": "Plant/Line1/Temp", "tagConfig": "{\"nodeId\":\"ns=2;s=Temperature\"}", "writeIdempotent": false },
+            { "rawPath": "Plant/Line1/Speed", "tagConfig": "{\"nodeId\":\"ns=2;s=Speed\"}", "writeIdempotent": true }
+          ]
+        }
+        """;
+
+    /// <summary>
+    ///     Verifies the v3 authored <c>RawTags</c> (RawPath + TagConfig blob + WriteIdempotent) bind
+    ///     through the DriverConfig deserialiser directly onto <see cref="OpcUaClientDriverOptions"/> —
+    ///     the OpcUaClient driver has no separate DTO, so the factory's direct-into-options path must
+    ///     populate the RawPath resolution list.
+    /// </summary>
+    [Fact]
+    public void CreateInstance_binds_rawtags_from_driverconfig()
+    {
+        var driver = OpcUaClientDriverFactoryExtensions.CreateInstance("drv-raw", RawTagsConfig, NullLoggerFactory.Instance);
+        // The factory succeeds and identity is intact — the deserialiser tolerated + bound the RawTags array.
+        driver.DriverType.ShouldBe("OpcUaClient");
+        driver.DriverInstanceId.ShouldBe("drv-raw");
+
+        // Assert the actual binding: deserialise the same DriverConfig into public options with the
+        // factory's serialiser settings (case-insensitive + string enums) and confirm RawTags populated.
+        var opts = System.Text.Json.JsonSerializer.Deserialize<OpcUaClientDriverOptions>(
+            RawTagsConfig,
+            new System.Text.Json.JsonSerializerOptions
+            {
+                PropertyNameCaseInsensitive = true,
+                Converters = { new System.Text.Json.Serialization.JsonStringEnumConverter() },
+            });
+        opts.ShouldNotBeNull();
+        opts!.RawTags.Count.ShouldBe(2);
+        opts.RawTags[0].RawPath.ShouldBe("Plant/Line1/Temp");
+        opts.RawTags[0].TagConfig.ShouldContain("ns=2;s=Temperature");
+        opts.RawTags[0].WriteIdempotent.ShouldBeFalse();
+        opts.RawTags[1].WriteIdempotent.ShouldBeTrue();
+    }
 }