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.Server/Workers/WorkerFrameReader.cs

@@ -19,7 +19,7 @@ public sealed class WorkerFrameReader
     private readonly WorkerFrameProtocolOptions _options;
     private readonly Stream _stream;
 
-    // Reused across frames rather than allocated per read (GWC-30). Safe because ReadAsync is
+    // Reused across frames rather than allocated per read. Safe because ReadAsync is
     // single-consumer by construction; the prefix is fully overwritten by every read.
     private readonly byte[] _lengthPrefix = new byte[sizeof(uint)];
 
@@ -61,8 +61,8 @@ public sealed class WorkerFrameReader
         }
 
         // Rent the payload buffer from the shared pool rather than allocating a fresh byte[] per
-        // frame; large event frames near the cap would otherwise allocate an LOH buffer each time
-        // (IPC-14). ParseFrom copies whatever it needs into the parsed message, so the rented buffer
+        // frame; large event frames near the cap would otherwise allocate an LOH buffer each time.
+        // ParseFrom copies whatever it needs into the parsed message, so the rented buffer
         // can be returned as soon as parsing completes without the envelope aliasing it. The rented
         // buffer may be larger than requested, so the read and parse are bounded to length.
         int length = checked((int)payloadLength);