fix(driver-abcip-cli): resolve Low code-review findings (Driver.AbCip.Cli-003,004,005,006,007,008)

- Driver.AbCip.Cli-003: SubscribeCommand prints the 'Subscribed' banner
  BEFORE wiring OnDataChange so the main thread can't interleave its
  write with the poll-thread handler.
- Driver.AbCip.Cli-004: AbCipCommandBase.Timeout and SubscribeCommand
  validate TimeoutMs / IntervalMs and throw CommandException on
  non-positive values.
- Driver.AbCip.Cli-005: every command now calls FlushLogging() in its
  finally block.
- Driver.AbCip.Cli-006: Timeout init throws NotSupportedException with a
  pointer at TimeoutMs instead of silently swallowing assignments.
- Driver.AbCip.Cli-007: added AbCipCommandBaseTests covering BuildOptions
  shape, probe / controller-browse / alarm toggles, host address, family
  selection, tag list passthrough.
- Driver.AbCip.Cli-008: rewrote the opening paragraph in
  docs/Driver.AbCip.Cli.md to credit the six-CLI roster with a pointer
  at docs/DriverClis.md.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Cli.Tests/SubscribeCommandIntervalTests.cs

@@ -0,0 +1,34 @@
+using Shouldly;
+using Xunit;
+using ZB.MOM.WW.OtOpcUa.Driver.AbCip.Cli.Commands;
+
+namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.Cli.Tests;
+
+/// <summary>
+///     Covers <see cref="SubscribeCommand.ValidateInterval(int)"/> — the guard that
+///     stops a zero / negative <c>--interval-ms</c> from reaching <c>SubscribeAsync</c>
+///     as a non-positive <see cref="TimeSpan"/>.
+/// </summary>
+[Trait("Category", "Unit")]
+public sealed class SubscribeCommandIntervalTests
+{
+    [Theory]
+    [InlineData(0)]
+    [InlineData(-1)]
+    [InlineData(-500)]
+    public void ValidateInterval_rejects_non_positive(int badMs)
+    {
+        var ex = Should.Throw<CliFx.Exceptions.CommandException>(
+            () => SubscribeCommand.ValidateInterval(badMs));
+        ex.Message.ShouldContain("--interval-ms");
+    }
+
+    [Theory]
+    [InlineData(1)]
+    [InlineData(250)]
+    [InlineData(60_000)]
+    public void ValidateInterval_accepts_positive(int goodMs)
+    {
+        Should.NotThrow(() => SubscribeCommand.ValidateInterval(goodMs));
+    }
+}