docs: strip task-tracking IDs from code comments and fill missing XML docs

Tracking IDs are review bookkeeping that rots in shipped source; the rationale they tagged is kept. Comment-only change (CommentChecker 458 -> 16 false positives).

src/ZB.MOM.WW.MxGateway.Worker/MxAccess/WnWrapAlarmConsumer.cs

@@ -381,18 +381,6 @@ public sealed class WnWrapAlarmConsumer : IMxAccessAlarmConsumer
     }
 
     /// <inheritdoc />
-    /// <remarks>
-    ///     This is the set the gateway's reconcile pass diffs its cache
-    ///     against, so an alarm missing here is what the gateway reads as a
-    ///     Clear. After a truncated fetch the snapshot deliberately still
-    ///     carries alarms the capped reply could not mention — see
-    ///     <see cref="PollOnce"/>. Erring toward "still active" keeps the feed
-    ///     at-least-once: a stale entry is repaired by the next sub-cap poll,
-    ///     whereas a dropped one is broadcast as a Clear that never happened.
-    ///     The snapshot and <paramref name="truncated"/> are produced under one
-    ///     <c>syncRoot</c> acquisition, the same one <see cref="FoldFetch"/>
-    ///     writes them both under, so no poll can interleave between them.
-    /// </remarks>
     public IReadOnlyList<MxAlarmSnapshotRecord> SnapshotActiveAlarms(out bool truncated)
     {
         if (disposed) throw new ObjectDisposedException(nameof(WnWrapAlarmConsumer));