Refine XML docs for historian, OPC UA, and tests

tools/opcuacli-dotnet/Commands/HistoryReadCommand.cs

@@ -9,27 +9,52 @@ namespace OpcUaCli.Commands;
 [Command("historyread", Description = "Read historical data from a node")]
 public class HistoryReadCommand : ICommand
 {
+    /// <summary>
+    /// Gets the OPC UA endpoint URL for the server that exposes the historized node.
+    /// </summary>
     [CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
     public string Url { get; init; } = default!;
 
+    /// <summary>
+    /// Gets the node identifier for the historized variable to query.
+    /// </summary>
     [CommandOption("node", 'n', Description = "Node ID (e.g. ns=1;s=TestMachine_001.TestHistoryValue)", IsRequired = true)]
     public string NodeId { get; init; } = default!;
 
+    /// <summary>
+    /// Gets the requested history start time string supplied by the operator.
+    /// </summary>
     [CommandOption("start", Description = "Start time (ISO 8601 or date string, default: 24 hours ago)")]
     public string? StartTime { get; init; }
 
+    /// <summary>
+    /// Gets the requested history end time string supplied by the operator.
+    /// </summary>
     [CommandOption("end", Description = "End time (ISO 8601 or date string, default: now)")]
     public string? EndTime { get; init; }
 
+    /// <summary>
+    /// Gets the maximum number of raw history values that should be returned to the console.
+    /// </summary>
     [CommandOption("max", Description = "Maximum number of values to return")]
     public int MaxValues { get; init; } = 1000;
 
+    /// <summary>
+    /// Gets the optional aggregate name to request when the operator wants processed history instead of raw values.
+    /// </summary>
     [CommandOption("aggregate", Description = "Aggregate function: Average, Minimum, Maximum, Count")]
     public string? Aggregate { get; init; }
 
+    /// <summary>
+    /// Gets the aggregate processing interval, in milliseconds, for processed history reads.
+    /// </summary>
     [CommandOption("interval", Description = "Processing interval in milliseconds for aggregates")]
     public double IntervalMs { get; init; } = 3600000;
 
+    /// <summary>
+    /// Connects to the target server and prints raw or aggregate historical data for the requested node.
+    /// </summary>
+    /// <param name="console">The CLI console used for output, errors, and cancellation handling.</param>
     public async ValueTask ExecuteAsync(IConsole console)
     {
         using var session = await OpcUaHelper.ConnectAsync(Url);