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.DataConnectionLayer/Adapters/MxGatewayAlarmMapper.cs

@@ -75,6 +75,8 @@ public static class MxGatewayAlarmMapper
     /// so numeric values always use '.' as the decimal separator.  Null or unset
     /// values produce an empty string.
     /// </summary>
+    /// <param name="mxVal">The gateway value union to convert, or null.</param>
+    /// <returns>The value formatted as an invariant-culture string, or an empty string if null or unset.</returns>
     internal static string MxValueToString(MxValue? mxVal)
     {
         if (mxVal is null) return "";