docs(xmldoc): fill missing XML docs + strip tracking-ID comments across src

Adds <summary>/<param>/<returns>/<inheritdoc> where missing and removes
project bookkeeping IDs (task/tracking refs) from shipped code comments,
so the docs read cleanly and CommentChecker is quiet except for known
false positives (PLC/protocol terms, event/IEqualityComparer inheritdoc).
Doc/comment-only; no logic changed; solution builds clean.

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy/Health/HostConnectivityForwarder.cs

@@ -13,7 +13,7 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Health;
 /// </summary>
 /// <remarks>
 ///     The eventual production source for this signal is the gateway's <c>StreamSessionHealth</c>
-///     RPC (mxaccessgw issue gw-6). Until that ships, the driver-side reconnect supervisor
+///     RPC. Until that ships, the driver-side reconnect supervisor
 ///     (PR 4.5) calls <see cref="SetTransport"/> on transport state transitions:
 ///     <see cref="HostState.Running"/> when the gw session re-Registers, <see cref="HostState.Stopped"/>
 ///     when the supervisor moves to <c>TransportLost</c>. The forwarder is intentionally
@@ -57,7 +57,7 @@ public sealed class HostConnectivityForwarder : IDisposable
     /// <summary>Disposes the forwarder and marks it as disposed.</summary>
     public void Dispose()
     {
-        // No-op today; reserved for the eventual gw-6 StreamSessionHealth consumer that
+        // No-op today; reserved for the eventual StreamSessionHealth consumer that
         // will own a long-running task this method tears down.
         _disposed = true;
     }