docs: backfill XML documentation across 756 files

Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.S7.Tests/S7DriverCodeReviewFixTests.cs

@@ -16,6 +16,8 @@ public sealed class S7DriverCodeReviewFixTests
 {
     // ---- Driver.S7-001 — Timer/Counter tags must be rejected at init ----
 
+    /// <summary>Verifies that initialize rejects timer or counter tags with NotSupportedException.</summary>
+    /// <param name="address">The S7 Timer or Counter address to test.</param>
     [Theory]
     [InlineData("T0")]
     [InlineData("T15")]
@@ -45,6 +47,7 @@ public sealed class S7DriverCodeReviewFixTests
         health.LastError.ShouldNotBeNull();
     }
 
+    /// <summary>Verifies that initialize accepts DB and MIQ addresses without triggering the unsupported guard.</summary>
     [Fact]
     public async Task Initialize_accepts_DB_and_MIQ_addresses_without_the_unsupported_guard_tripping()
     {
@@ -71,6 +74,7 @@ public sealed class S7DriverCodeReviewFixTests
 
     // ---- Driver.S7-011 — driverConfigJson must be applied on Initialize ----
 
+    /// <summary>Verifies that initialize applies the supplied driverConfigJson over constructor options.</summary>
     [Fact]
     public async Task Initialize_applies_the_supplied_driverConfigJson_over_the_constructor_options()
     {
@@ -96,6 +100,7 @@ public sealed class S7DriverCodeReviewFixTests
             "InitializeAsync must apply the driverConfigJson timeout, not the constructor's");
     }
 
+    /// <summary>Verifies that initialize rejects a timer tag supplied only through driverConfigJson.</summary>
     [Fact]
     public async Task Initialize_rejects_a_timer_tag_supplied_only_through_driverConfigJson()
     {
@@ -114,6 +119,7 @@ public sealed class S7DriverCodeReviewFixTests
         ex.Message.ShouldContain("T5");
     }
 
+    /// <summary>Verifies that reinitialize applies a changed driverConfigJson.</summary>
     [Fact]
     public async Task Reinitialize_applies_a_changed_driverConfigJson()
     {
@@ -135,6 +141,7 @@ public sealed class S7DriverCodeReviewFixTests
 
     // ---- Driver.S7-006 — Shutdown drains probe/poll loops before disposing the gate ----
 
+    /// <summary>Verifies that shutdown completes cleanly with active subscriptions and no disposal race.</summary>
     [Fact]
     public async Task Shutdown_completes_cleanly_with_active_subscriptions_and_no_disposal_race()
     {
@@ -159,6 +166,7 @@ public sealed class S7DriverCodeReviewFixTests
         await Should.NotThrowAsync(async () => await drv.DisposeAsync());
     }
 
+    /// <summary>Verifies that dispose after subscribe does not throw ObjectDisposedException.</summary>
     [Fact]
     public async Task Dispose_after_subscribe_does_not_throw_ObjectDisposedException()
     {