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templates/stellaops-plugin-scheduler/MyJobOptionsValidator.cs

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+using StellaOps.DependencyInjection.Validation;
+
+namespace StellaOps.Plugin.MyJob;
+
+/// <summary>
+/// Validates <see cref="MyJobOptions"/> configuration.
+/// </summary>
+public sealed class MyJobOptionsValidator : OptionsValidatorBase<MyJobOptions>
+{
+    protected override string SectionPrefix => MyJobOptions.SectionName;
+
+    protected override void ValidateOptions(MyJobOptions options, ValidationContext context)
+    {
+        context
+            .RequireNotEmpty(options.CronSchedule, nameof(options.CronSchedule))
+            .RequirePositive(options.MaxExecutionMinutes, nameof(options.MaxExecutionMinutes))
+            .RequirePositive(options.BatchSize, nameof(options.BatchSize))
+            .RequireInRange(options.MaxExecutionMinutes, nameof(options.MaxExecutionMinutes), 1, 1440)
+            .RequireInRange(options.BatchSize, nameof(options.BatchSize), 1, 10000);
+
+        // Validate cron expression format (basic check)
+        if (!string.IsNullOrWhiteSpace(options.CronSchedule))
+        {
+            var parts = options.CronSchedule.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+            if (parts.Length < 5 || parts.Length > 6)
+            {
+                context.AddError(nameof(options.CronSchedule), "must be a valid cron expression with 5 or 6 fields.");
+            }
+        }
+    }
+}