docs(xml): fill missing XML doc comments + strip task-tracking refs across src (fixdocs)

Add missing <summary>/<param>/<returns>/<typeparam> tags and switch
interface implementations to <inheritdoc/> across 106 files; strip
project bookkeeping identifiers (Task NN, #05-TNN, PLAN-04, StoreAndForward-0NN)
from shipped code comments while preserving the descriptive rationale.
Comment-only: zero code-logic lines changed; solution builds 0/0.

Claude-Session: https://claude.ai/code/session_01MtdgwpEeCUn6cUA5f1LMPj

src/ZB.MOM.WW.ScadaBridge.CentralUI/Services/PollGate.cs

@@ -6,6 +6,12 @@ namespace ZB.MOM.WW.ScadaBridge.CentralUI.Services;
 public sealed class PollGate
 {
     private int _inFlight;
+
+    /// <summary>Attempts to enter the gate for a new poll tick.</summary>
+    /// <returns><see langword="true"/> if no refresh is currently in flight and the caller
+    /// may proceed; <see langword="false"/> if a previous refresh is still running.</returns>
     public bool TryEnter() => Interlocked.CompareExchange(ref _inFlight, 1, 0) == 0;
+
+    /// <summary>Releases the gate after a poll tick's refresh has completed.</summary>
     public void Exit() => Volatile.Write(ref _inFlight, 0);
 }