Iceberg troubleshooting and performance tuning for Cloud

modules/ROOT/nav.adoc

@@ -403,6 +403,8 @@
 **** xref:manage:iceberg/redpanda-topics-iceberg-snowflake-catalog.adoc[Snowflake and Open Catalog]
 *** xref:manage:iceberg/query-iceberg-topics.adoc[]
 *** xref:manage:iceberg/migrate-to-iceberg-topics.adoc[]
+*** xref:manage:iceberg/iceberg-performance-tuning.adoc[]
+*** xref:manage:iceberg/iceberg-troubleshooting.adoc[]
 ** xref:manage:schema-reg/index.adoc[Schema Registry]
 *** xref:manage:schema-reg/schema-reg-overview.adoc[]
 *** xref:manage:schema-reg/schema-reg-ui.adoc[]

modules/manage/pages/iceberg/iceberg-performance-tuning.adoc

@@ -0,0 +1,5 @@
+= Tune Performance for Iceberg Topics
+:description: Optimize query performance and translation throughput for Iceberg topics with partitioning, compaction, lag target tuning, and cluster sizing guidance.
+:page-categories: Iceberg, Management
+
+include::ROOT:manage:iceberg/iceberg-performance-tuning.adoc[tag=single-source]

modules/manage/pages/iceberg/iceberg-troubleshooting.adoc

@@ -0,0 +1,5 @@
+= Troubleshoot Iceberg Topics
+:description: Diagnose and resolve errors in Redpanda Iceberg translation, including dead-letter queue (DLQ) inspection and record reprocessing.
+:page-categories: Iceberg, Troubleshooting
+
+include::ROOT:manage:iceberg/iceberg-troubleshooting.adoc[tag=single-source]