Add batch distributor notification config

internal/config/validate.go

@@ -148,10 +148,56 @@ func validateDistributorNotify(cfg DistributorNotifyConfig) error {
 	if _, err := RenderDistributorReportPaths(cfg.ReportPathTemplates, values); err != nil {
 		return err
 	}
+	if err := validateDistributorBatchNotify(cfg.Batch); err != nil {
+		return err
+	}
 
 	return nil
 }
 
+func validateDistributorBatchNotify(cfg DistributorBatchNotifyConfig) error {
+	if !cfg.Enabled {
+		return nil
+	}
+	if cfg.PipelineIDTemplate == "" {
+		return fmt.Errorf("notify.distributor.batch.pipeline_id_template is required when enabled")
+	}
+	if err := validateDistributorBatchTemplate("notify.distributor.batch.pipeline_id_template", cfg.PipelineIDTemplate, distributorBatchPipelineTemplateVariables); err != nil {
+		return err
+	}
+	if cfg.BundleIDTemplate == "" {
+		return fmt.Errorf("notify.distributor.batch.bundle_id_template is required when enabled")
+	}
+	if err := validateDistributorBatchTemplate("notify.distributor.batch.bundle_id_template", cfg.BundleIDTemplate, distributorBatchTemplateVariables); err != nil {
+		return err
+	}
+	if cfg.IdempotencyKeyTemplate == "" {
+		return fmt.Errorf("notify.distributor.batch.idempotency_key_template is required when enabled")
+	}
+	if err := validateDistributorBatchTemplate("notify.distributor.batch.idempotency_key_template", cfg.IdempotencyKeyTemplate, distributorBatchIdempotencyTemplateVariables); err != nil {
+		return err
+	}
+
+	values := DistributorBatchTemplateValues{
+		LocationID:       "location",
+		Batch:            "morning",
+		BatchRunID:       "20260529T100000.000000000Z_morning",
+		BatchStartedDate: "2026-05-29",
+	}
+	bundleID, err := RenderDistributorBatchBundleID(cfg.BundleIDTemplate, values)
+	if err != nil {
+		return err
+	}
+	values.BundleID = bundleID
+	if _, err := RenderDistributorBatchPipelineID(cfg.PipelineIDTemplate, values); err != nil {
+		return err
+	}
+	if _, err := RenderDistributorBatchIdempotencyKey(cfg.IdempotencyKeyTemplate, values); err != nil {
+		return err
+	}
+	return nil
+}
+
 func validatePolicy(name string, policy MissingSourcePolicy) error {
 	switch policy {
 	case MissingSourceError, MissingSourceWarn, MissingSourceNone: