feat(focas): add cnc_getfigure per-axis position-figure client binding

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/IFocasClient.cs

@@ -153,6 +153,15 @@ public interface IFocasClient : IDisposable
     /// </summary>
     /// <param name="cancellationToken">The cancellation token.</param>
     Task<IReadOnlyList<int>> GetSpindleMaxRpmsAsync(CancellationToken cancellationToken);
+
+    /// <summary>
+    ///     Read the per-axis position decimal-place figure via <c>cnc_getfigure</c>. The returned
+    ///     list is parallel to <see cref="GetAxisNamesAsync"/> (index = axis). An EMPTY list means the
+    ///     CNC/backend does not report figures — the driver then falls back to the configured
+    ///     <c>PositionDecimalPlaces</c>. Values are clamped non-negative.
+    /// </summary>
+    /// <param name="cancellationToken">The cancellation token.</param>
+    Task<IReadOnlyList<int>> GetPositionFiguresAsync(CancellationToken cancellationToken);
 }
 
 /// <summary>One servo-meter entry — one axis's current load percentage.</summary>
@@ -217,8 +226,8 @@ public sealed record FocasSpindleName(string Name, string Suffix1, string Suffix
 /// <summary>
 ///     Fast-poll bundle for one axis. Position values are scaled integers; the caller
 ///     divides by <c>10^DecimalPlaces</c> to get the decimal value. DecimalPlaces is
-///     currently left to the caller to supply (via device config or a future
-///     <c>cnc_getfigure</c> path once that export lands).
+///     supplied by the caller — either via device config (<c>PositionDecimalPlaces</c>) or
+///     the per-axis <see cref="IFocasClient.GetPositionFiguresAsync"/> (<c>cnc_getfigure</c>) path.
 /// </summary>
 /// <summary>
 ///     Program + operation-mode snapshot. Name is the currently-executing