fix(driver-focas-cli): resolve Low code-review findings (Driver.FOCAS.Cli-001,002,003,004; -005 deferred)

- Driver.FOCAS.Cli-001: WriteCommand.ParseValue now wraps numeric
  FormatException / OverflowException as CliFx CommandException with
  the offending value.
- Driver.FOCAS.Cli-002: SubscribeCommand's OnDataChange handler and the
  banner both take a writeLock so notification-callback and main-thread
  writes can't interleave; handler exceptions are warn-and-swallow.
- Driver.FOCAS.Cli-003: FocasCommandBase.ValidateOptions rejects
  --cnc-port outside 1..65535, non-positive --timeout-ms, and
  non-positive --interval-ms; ExecuteAsync calls it first.
- Driver.FOCAS.Cli-004: 'await using var driver' is the sole driver
  disposal path; dropped the redundant explicit await ShutdownAsync.
- Driver.FOCAS.Cli-005 (Deferred): the fix lives in
  Driver.Cli.Common.SnapshotFormatter — explicitly naming the
  status-code shortlist there benefits every driver CLI. Left as a
  Driver.Cli.Common follow-up.
- Registered the new tests/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.FOCAS.Cli.Tests
  project in ZB.MOM.WW.OtOpcUa.slnx.

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

src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.FOCAS.Cli/FocasCommandBase.cs

@@ -54,4 +54,26 @@ public abstract class FocasCommandBase : DriverCommandBase
     };
 
     protected string DriverInstanceId => $"focas-cli-{CncHost}:{CncPort}";
+
+    /// <summary>
+    ///     Driver.FOCAS.Cli-003: validate numeric option ranges at the CLI boundary so a
+    ///     zero/negative <c>--cnc-port</c>, <c>--timeout-ms</c>, or <c>--interval-ms</c>
+    ///     surfaces as a clean <see cref="CliFx.Exceptions.CommandException"/> rather than
+    ///     either an opaque downstream exception (invalid <c>focas://host:&lt;n&gt;</c> /
+    ///     zero <c>TimeSpan</c>) or a tight-spinning poll loop. The <c>--interval-ms</c>
+    ///     option is subscribe-only — pass <c>null</c> for probe/read/write so this
+    ///     helper can be a single shared validator.
+    /// </summary>
+    protected void ValidateOptions(int? intervalMs = null)
+    {
+        if (CncPort < 1 || CncPort > 65535)
+            throw new CliFx.Exceptions.CommandException(
+                $"--cnc-port must be in the range 1..65535 (got {CncPort}).");
+        if (TimeoutMs <= 0)
+            throw new CliFx.Exceptions.CommandException(
+                $"--timeout-ms must be positive (got {TimeoutMs}).");
+        if (intervalMs is { } iv && iv <= 0)
+            throw new CliFx.Exceptions.CommandException(
+                $"--interval-ms must be positive (got {iv}).");
+    }
 }