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/S7AddressParserTests.cs

@@ -8,6 +8,12 @@ public sealed class S7AddressParserTests
 {
     // --- Data blocks ---
 
+    /// <summary>Verifies that data block addresses are parsed correctly.</summary>
+    /// <param name="input">The address string to parse.</param>
+    /// <param name="db">The expected data block number.</param>
+    /// <param name="size">The expected data size.</param>
+    /// <param name="byteOff">The expected byte offset.</param>
+    /// <param name="bitOff">The expected bit offset.</param>
     [Theory]
     [InlineData("DB1.DBX0.0", 1, S7Size.Bit, 0, 0)]
     [InlineData("DB1.DBX0.7", 1, S7Size.Bit, 0, 7)]
@@ -26,6 +32,11 @@ public sealed class S7AddressParserTests
         r.BitOffset.ShouldBe(bitOff);
     }
 
+    /// <summary>Verifies that parsing is case-insensitive and trims whitespace.</summary>
+    /// <param name="input">The address string to parse.</param>
+    /// <param name="db">The expected data block number.</param>
+    /// <param name="size">The expected data size.</param>
+    /// <param name="off">The expected byte offset.</param>
     [Theory]
     [InlineData("db1.dbw0", 1, S7Size.Word, 0)]
     [InlineData(" DB1.DBW0 ", 1, S7Size.Word, 0)]       // trim whitespace
@@ -40,6 +51,12 @@ public sealed class S7AddressParserTests
 
     // --- M / I / Q ---
 
+    /// <summary>Verifies that Memory (M), Input (I), and Output (Q) addresses are parsed correctly.</summary>
+    /// <param name="input">The address string to parse.</param>
+    /// <param name="area">The expected address area.</param>
+    /// <param name="size">The expected data size.</param>
+    /// <param name="byteOff">The expected byte offset.</param>
+    /// <param name="bitOff">The expected bit offset.</param>
     [Theory]
     [InlineData("MB0", S7Area.Memory, S7Size.Byte, 0, 0)]
     [InlineData("MW10", S7Area.Memory, S7Size.Word, 10, 0)]
@@ -65,6 +82,10 @@ public sealed class S7AddressParserTests
 
     // --- Timers / counters ---
 
+    /// <summary>Verifies that timer and counter addresses are parsed correctly.</summary>
+    /// <param name="input">The address string to parse.</param>
+    /// <param name="area">The expected address area.</param>
+    /// <param name="number">The expected timer or counter number.</param>
     [Theory]
     [InlineData("T0", S7Area.Timer, 0)]
     [InlineData("T15", S7Area.Timer, 15)]
@@ -80,6 +101,8 @@ public sealed class S7AddressParserTests
 
     // --- Reject garbage ---
 
+    /// <summary>Verifies that invalid addresses are rejected with FormatException.</summary>
+    /// <param name="bad">The invalid address string to test.</param>
     [Theory]
     [InlineData("")]
     [InlineData("   ")]
@@ -102,6 +125,7 @@ public sealed class S7AddressParserTests
     public void Parse_rejects_invalid(string bad)
         => Should.Throw<FormatException>(() => S7AddressParser.Parse(bad));
 
+    /// <summary>Verifies that TryParse returns false for invalid input without throwing.</summary>
     [Fact]
     public void TryParse_returns_false_for_garbage_without_throwing()
     {
@@ -109,6 +133,7 @@ public sealed class S7AddressParserTests
         r.ShouldBe(default);
     }
 
+    /// <summary>Verifies that TryParse returns true for a valid address.</summary>
     [Fact]
     public void TryParse_returns_true_for_valid_address()
     {