Phase 0 — mechanical rename ZB.MOM.WW.LmxOpcUa.* → ZB.MOM.WW.OtOpcUa.*

Renames all 11 projects (5 src + 6 tests), the .slnx solution file, all source-file namespaces, all axaml namespace references, and all v1 documentation references in CLAUDE.md and docs/*.md (excluding docs/v2/ which is already in OtOpcUa form). Also updates the TopShelf service registration name from "LmxOpcUa" to "OtOpcUa" per Phase 0 Task 0.6.

Preserves runtime identifiers per Phase 0 Out-of-Scope rules to avoid breaking v1/v2 client trust during coexistence: OPC UA `ApplicationUri` defaults (`urn:{GalaxyName}:LmxOpcUa`), server `EndpointPath` (`/LmxOpcUa`), `ServerName` default (feeds cert subject CN), `MxAccessConfiguration.ClientName` default (defensive — stays "LmxOpcUa" for MxAccess audit-trail consistency), client OPC UA identifiers (`ApplicationName = "LmxOpcUaClient"`, `ApplicationUri = "urn:localhost:LmxOpcUaClient"`, cert directory `%LocalAppData%\LmxOpcUaClient\pki\`), and the `LmxOpcUaServer` class name (class rename out of Phase 0 scope per Task 0.5 sed pattern; happens in Phase 1 alongside `LmxNodeManager → GenericDriverNodeManager` Core extraction). 23 LmxOpcUa references retained, all enumerated and justified in `docs/v2/implementation/exit-gate-phase-0.md`.

Build clean: 0 errors, 30 warnings (lower than baseline 167). Tests at strict improvement over baseline: 821 passing / 1 failing vs baseline 820 / 2 (one flaky pre-existing failure passed this run; the other still fails — both pre-existing and unrelated to the rename). `Client.UI.Tests`, `Historian.Aveva.Tests`, `Client.Shared.Tests`, `IntegrationTests` all match baseline exactly. Exit gate compliance results recorded in `docs/v2/implementation/exit-gate-phase-0.md` with all 7 checks PASS or DEFERRED-to-PR-review (#7 service install verification needs Windows service permissions on the reviewer's box).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/ZB.MOM.WW.OtOpcUa.Host/Domain/Quality.cs

@@ -0,0 +1,122 @@
+namespace ZB.MOM.WW.OtOpcUa.Host.Domain
+{
+    /// <summary>
+    ///     OPC DA quality codes mapped from MXAccess quality values. (MXA-009, OPC-005)
+    /// </summary>
+    public enum Quality : byte
+    {
+        // Bad family (0-63)
+        /// <summary>
+        ///     No valid process value is available.
+        /// </summary>
+        Bad = 0,
+
+        /// <summary>
+        ///     The value is invalid because the Galaxy attribute definition or mapping is wrong.
+        /// </summary>
+        BadConfigError = 4,
+
+        /// <summary>
+        ///     The bridge is not currently connected to the Galaxy runtime.
+        /// </summary>
+        BadNotConnected = 8,
+
+        /// <summary>
+        ///     The runtime device or adapter failed while obtaining the value.
+        /// </summary>
+        BadDeviceFailure = 12,
+
+        /// <summary>
+        ///     The underlying field source reported a bad sensor condition.
+        /// </summary>
+        BadSensorFailure = 16,
+
+        /// <summary>
+        ///     Communication with the runtime failed while retrieving the value.
+        /// </summary>
+        BadCommFailure = 20,
+
+        /// <summary>
+        ///     The attribute is intentionally unavailable for service, such as a locked or unwritable value.
+        /// </summary>
+        BadOutOfService = 24,
+
+        /// <summary>
+        ///     The bridge is still waiting for the first usable value after startup or resubscription.
+        /// </summary>
+        BadWaitingForInitialData = 32,
+
+        // Uncertain family (64-191)
+        /// <summary>
+        ///     A value is available, but it should be treated cautiously.
+        /// </summary>
+        Uncertain = 64,
+
+        /// <summary>
+        ///     The last usable value is being repeated because a newer one is unavailable.
+        /// </summary>
+        UncertainLastUsable = 68,
+
+        /// <summary>
+        ///     The sensor or source is providing a value with reduced accuracy.
+        /// </summary>
+        UncertainSensorNotAccurate = 80,
+
+        /// <summary>
+        ///     The value exceeds its engineered limits.
+        /// </summary>
+        UncertainEuExceeded = 84,
+
+        /// <summary>
+        ///     The source is operating in a degraded or subnormal state.
+        /// </summary>
+        UncertainSubNormal = 88,
+
+        // Good family (192+)
+        /// <summary>
+        ///     The value is current and suitable for normal client use.
+        /// </summary>
+        Good = 192,
+
+        /// <summary>
+        ///     The value is good but currently overridden locally rather than flowing from the live source.
+        /// </summary>
+        GoodLocalOverride = 216
+    }
+
+    /// <summary>
+    ///     Helper methods for reasoning about OPC quality families used by the bridge.
+    /// </summary>
+    public static class QualityExtensions
+    {
+        /// <summary>
+        ///     Determines whether the quality represents a good runtime value that can be trusted by OPC UA clients.
+        /// </summary>
+        /// <param name="q">The quality code to inspect.</param>
+        /// <returns><see langword="true" /> when the value is in the good quality range; otherwise, <see langword="false" />.</returns>
+        public static bool IsGood(this Quality q)
+        {
+            return (byte)q >= 192;
+        }
+
+        /// <summary>
+        ///     Determines whether the quality represents an uncertain runtime value that should be treated cautiously.
+        /// </summary>
+        /// <param name="q">The quality code to inspect.</param>
+        /// <returns><see langword="true" /> when the value is in the uncertain range; otherwise, <see langword="false" />.</returns>
+        public static bool IsUncertain(this Quality q)
+        {
+            return (byte)q >= 64 && (byte)q < 192;
+        }
+
+        /// <summary>
+        ///     Determines whether the quality represents a bad runtime value that should not be used as valid process data.
+        /// </summary>
+        /// <param name="q">The quality code to inspect.</param>
+        /// <returns><see langword="true" /> when the value is in the bad range; otherwise, <see langword="false" />.</returns>
+        public static bool IsBad(this Quality q)
+        {
+            return (byte)q < 64;
+        }
+    }
+}