Improve folder structure

Author: sbernauer

modules/ROOT/partials/release-notes/release-23.1.adoc

@@ -37,7 +37,7 @@ These options are described in more detail xref:contributor:adr/ADR023-product-i
 Component activity within the platform is logged in a way that makes it difficult to find, persist and consolidate this information.
 Log configuration is also a challenge.
 To address these two issues a logging framework has been added to the platform, offering a consistent custom resource configuration and a separate, persisted sink (the current implementation support OpenSearch).
-This is discussed in more detail xref:contributor:adr/ADR025-logging_architecture.adoc[in this ADR] and xref:concepts:logging.adoc[on this concepts page].
+This is discussed in more detail xref:contributor:adr/ADR025-logging_architecture.adoc[in this ADR] and xref:concepts:observability/logging.adoc[on this concepts page].
 
 In this release this has been added to the following components:
 

modules/ROOT/partials/release-notes/release-23.4.adoc

@@ -54,7 +54,7 @@ See this xref:contributor:adr/ADR026-affinities.adoc[ADR] for more information.
 
 The logging framework (added to the platform in Release 23.1) offers a consistent custom resource configuration and a separate, persisted sink (defaulting to OpenSearch).
 This has now been rolled out across all products.
-See this xref:contributor:adr/adr025-logging_architecture[ADR] and this xref:concepts:logging.adoc[concepts page] for more information.
+See this xref:contributor:adr/adr025-logging_architecture[ADR] and this xref:concepts:observability/logging.adoc[concepts page] for more information.
 
 ===== Service Type
 

modules/ROOT/partials/release-notes/release-25.3.adoc

@@ -34,7 +34,7 @@ Released on 2025-03-21.
 
 ===== Observability
 
-Products now log information about their xref:concepts:containerdebug.adoc[container environment], on startup and on an interval after that.
+Products now log information about their xref:concepts:observability/containerdebug.adoc[container environment], on startup and on an interval after that.
 
 ===== NiFi
 

modules/concepts/nav.adoc

@@ -22,8 +22,8 @@
 *** xref:operations/graceful_shutdown.adoc[]
 *** xref:operations/temporary_credentials_lifetime.adoc[]
 ** Observability
-*** xref:labels.adoc[Labels]
-*** xref:logging.adoc[Logging]
-*** xref:containerdebug.adoc[Container environment]
+*** xref:observability/labels.adoc[Labels]
+*** xref:observability/logging.adoc[Logging]
+*** xref:observability/containerdebug.adoc[Container environment]
 *** xref:observability/telemetry.adoc[Telemetry]
 ** xref:container-images.adoc[]

modules/concepts/pages/index.adoc

@@ -34,5 +34,5 @@ It covers xref:operations/cluster_operations.adoc[starting, stopping and restart
 
 == Observability
 
-Learn about which xref:labels.adoc[labels] are attached to the operators and the stacklets and the resources that get created by the operator.
-Also learn about xref:logging.adoc[].
+Learn about which xref:observability/labels.adoc[labels] are attached to the operators and the stacklets and the resources that get created by the operator.
+Also learn about xref:observability/logging.adoc[].

modules/concepts/pages/containerdebug.adoc renamed to modules/concepts/pages/observability/containerdebug.adoc

@@ -17,7 +17,7 @@ main product container.
 == Output
 
 The collected information is logged to the Kubernetes pod logs (readable via `kubectl logs <pod>`)
-and to the xref:logging.adoc#architecture[shared Stackable log dir]
+and to the xref:observability/logging.adoc#architecture[shared Stackable log dir]
 (for pickup by the Vector log agent).
 
 Additionally, it is written as JSON to `/stackable/log/containerdebug-state.json`.

modules/concepts/pages/labels.adoc renamed to modules/concepts/pages/observability/labels.adoc

@@ -1,4 +1,5 @@
 = Logging
+:page-aliases: logging.adoc
 :description: A conceptual explanation of the logging architecture of the Stackable Data Platform, and how it is configured.
 :keywords: logging, observability, log aggregation, Kubernetes, k8s, Vector, Elasticsearch, OpenSearch
 :vector: https://vector.dev/

modules/concepts/pages/logging.adoc renamed to modules/concepts/pages/observability/logging.adoc

@@ -4,7 +4,7 @@
 
 = Implementing log aggregation
 
-For a conceptual overview of logging aggregation, consult the xref:concepts:logging.adoc[logging concept page].
+For a conceptual overview of logging aggregation, consult the xref:concepts:observability/logging.adoc[logging concept page].
 
 == Overview
 

modules/contributor/pages/guidelines/logging.adoc

@@ -67,7 +67,7 @@ and apply it:
 [source,bash]
 include::example$logging-aggregator/main.sh[tag=zk]
 
-TIP: You can learn more about how to configure logging in a product at the xref:concepts:logging.adoc[logging concept documentation].
+TIP: You can learn more about how to configure logging in a product at the xref:concepts:observability/logging.adoc[logging concept documentation].
 
 == Watch the logs
 
@@ -112,4 +112,4 @@ Congratulations, this concludes the tutorial!
 
 == What's next?
 
-Look into different sink configurations which are more suited to production use in the https://vector.dev/docs/reference/configuration/sinks/[sinks overview documetation] or learn more about how logging works on the platform in the xref:concepts:logging.adoc[concepts documentation].
+Look into different sink configurations which are more suited to production use in the https://vector.dev/docs/reference/configuration/sinks/[sinks overview documetation] or learn more about how logging works on the platform in the xref:concepts:observability/logging.adoc[concepts documentation].