docs: complete XML doc comments via fixdocs (2757 to 131 findings)

Add missing <returns>/<param>/<summary>/<typeparam> tags and clean up
misused inheritdoc across 481 files so the documented API surface is
complete. Documentation-only (zero code lines changed). The 131 remaining
findings are inheritdoc-style warnings deliberately left to preserve
hand-written implementation rationale (plan-decision notes, race-condition
explanations).

tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Pickers/HistorianWonderwareAddressBuilderTests.cs

@@ -6,6 +6,11 @@ namespace ZB.MOM.WW.OtOpcUa.AdminUI.Tests.Pickers;
 
 public sealed class HistorianWonderwareAddressBuilderTests
 {
+    /// <summary>Verifies that Build produces the canonical address query string for various tag/mode/interval combinations.</summary>
+    /// <param name="tag">The tag name input.</param>
+    /// <param name="mode">The retrieval mode input.</param>
+    /// <param name="interval">The interval input.</param>
+    /// <param name="expected">The expected canonical address string.</param>
     [Theory]
     [InlineData("SysTimeHour", "Cyclic", 60, "SysTimeHour?mode=Cyclic&interval=60")]
     [InlineData("ReactorTemp", "Last", 1, "ReactorTemp?mode=Last&interval=1")]