Docs polish for 2.6.0 (#28125)

* Plain text for back-link to classic pages instead of info box

* No info breakouts up top in the actor intro page

* No info boxes for the classic-version-of-the-page

The info box takes too much attention and space

* Re-order project info, update akka-paradox-sbt to get toggle

akka-docs/src/main/paradox/actors.md

@@ -2,9 +2,7 @@
 
 @@include[includes.md](includes.md) { #actor-api }
 
-@@project-info{ projectId="akka-actor" }
-
-## Dependency
+## Module info
 
 To use Classic Actors, add the following dependency in your project:
 
@@ -14,6 +12,8 @@ To use Classic Actors, add the following dependency in your project:
   version="$akka.version$"
 }
 
+@@project-info{ projectId="akka-actor" }
+
 ## Introduction
 
 The [Actor Model](http://en.wikipedia.org/wiki/Actor_model) provides a higher level of abstraction for writing concurrent

akka-docs/src/main/paradox/cluster-client.md

@@ -9,9 +9,7 @@ It is not advised to build new applications with Cluster Client, and existing us
 
 @@include[includes.md](includes.md) { #actor-api }
 
-@@project-info{ projectId="akka-cluster-tools" }
-
-## Dependency
+## Module info
 
 To use Cluster Client, you must add the following dependency in your project:
 
@@ -21,6 +19,8 @@ To use Cluster Client, you must add the following dependency in your project:
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-tools" }
+
 ## Introduction
 
 An actor system that is not part of the cluster can communicate with actors

akka-docs/src/main/paradox/cluster-metrics.md

@@ -1,8 +1,6 @@
 # Classic Cluster Metrics Extension
 
-@@project-info{ projectId="akka-cluster-metrics" }
-
-## Dependency
+## Module info
 
 To use Cluster Metrics Extension, you must add the following dependency in your project:
 
@@ -19,6 +17,8 @@ and add the following configuration stanza to your `application.conf`
 akka.extensions = [ "akka.cluster.metrics.ClusterMetricsExtension" ]
 ```
 
+@@project-info{ projectId="akka-cluster-metrics" }
+
 ## Introduction
 
 

akka-docs/src/main/paradox/cluster-sharding.md

@@ -3,9 +3,7 @@
 @@include[includes.md](includes.md) { #actor-api }
 For the full documentation of this feature and for new projects see @ref:[Cluster Sharding](typed/cluster-sharding.md).
 
-@@project-info{ projectId="akka-cluster-sharding" }
-
-## Dependency
+## Module info
 
 To use Cluster Sharding, you must add the following dependency in your project:
 
@@ -15,6 +13,8 @@ To use Cluster Sharding, you must add the following dependency in your project:
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-sharding" }
+
 ## Sample project
 
 You can look at the

akka-docs/src/main/paradox/cluster-singleton.md

@@ -3,9 +3,7 @@
 @@include[includes.md](includes.md) { #actor-api }
 For the full documentation of this feature and for new projects see @ref:[Cluster Singleton](typed/cluster-singleton.md).
 
-@@project-info{ projectId="akka-cluster-tools" }
-
-## Dependency
+## Module info
 
 To use Cluster Singleton, you must add the following dependency in your project:
 
@@ -15,6 +13,8 @@ To use Cluster Singleton, you must add the following dependency in your project:
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-tools" }
+
 ## Introduction
 
 For the full documentation of this feature and for new projects see @ref:[Cluster Singleton - Introduction](typed/cluster-singleton.md#introduction).

akka-docs/src/main/paradox/cluster-usage.md

@@ -19,9 +19,7 @@ recommendation if you don't have other preferences or constraints.
 
 @@@
 
-@@project-info{ projectId="akka-cluster" }
-
-## Dependency
+## Modue info
 
 To use Akka Cluster add the following dependency in your project:
 
@@ -31,6 +29,8 @@ To use Akka Cluster add the following dependency in your project:
   version="$akka.version$"
 }
 
+@@project-info{ projectId="akka-cluster" }
+
 ## Cluster samples
 
 To see what using Akka Cluster looks like in practice, see the

akka-docs/src/main/paradox/coordination.md

@@ -5,9 +5,7 @@ project.description: A distributed lock with Akka Coordination using a pluggable
 
 Akka Coordination is a set of tools for distributed coordination.
 
-@@project-info{ projectId="akka-coordination" }
-
-## Dependency
+## Module info
 
 @@dependency[sbt,Gradle,Maven] {
   group="com.typesafe.akka"
@@ -15,6 +13,8 @@ Akka Coordination is a set of tools for distributed coordination.
   version="$akka.version$"
 }
 
+@@project-info{ projectId="akka-coordination" }
+
 ## Lease
 
 The lease is a pluggable API for a distributed lock. 

akka-docs/src/main/paradox/discovery/index.md

@@ -31,9 +31,7 @@ See @ref:[Migration hints](#migrating-from-akka-management-discovery-before-1-0-
 
 @@@
 
-@@project-info{ projectId="akka-discovery" }
-
-## Dependency
+## Module info
 
 @@dependency[sbt,Gradle,Maven] {
   group="com.typesafe.akka"
@@ -41,6 +39,8 @@ See @ref:[Migration hints](#migrating-from-akka-management-discovery-before-1-0-
   version="$akka.version$"
 }
 
+@@project-info{ projectId="akka-discovery" }
+
 ## How it works
 
 Loading the extension:

akka-docs/src/main/paradox/distributed-pub-sub.md

@@ -3,9 +3,7 @@
 @@include[includes.md](includes.md) { #actor-api }
 For the new API see FIXME https://github.com/akka/akka/issues/26338.
 
-@@project-info{ projectId="akka-cluster-tools" }
-
-## Dependency
+## Module info
 
 To use Distributed Publish Subscribe you must add the following dependency in your project:
 
@@ -15,6 +13,8 @@ To use Distributed Publish Subscribe you must add the following dependency in yo
   version="$akka.version$"
 }
 
+@@project-info{ projectId="akka-cluster-tools" }
+
 ## Introduction
 
 How do I send a message to an actor without knowing which node it is running on?

akka-docs/src/main/paradox/logging.md

@@ -3,9 +3,7 @@
 @@include[includes.md](includes.md) { #actor-api }
 For the new API see @ref[Logging](typed/logging.md).
 
-@@project-info{ projectId="akka-slf4j" }
-
-## Dependency
+## Module info
 
 To use Logging, you must at least use the Akka actors dependency in your project, and will most likely want to configure logging via the SLF4J module (@ref:[see below](#slf4j)).
 
@@ -15,6 +13,8 @@ To use Logging, you must at least use the Akka actors dependency in your project
   version="$akka.version$"
 }
 
+@@project-info{ projectId="akka-slf4j" }
+
 ## Introduction
 
 Logging in Akka is not tied to a specific logging backend. By default

akka-docs/src/main/paradox/multi-node-testing.md

@@ -3,9 +3,7 @@ project.description: Multi node testing of distributed systems built with Akka.
 ---
 # Multi Node Testing
 
-@@project-info{ projectId="akka-multi-node-testkit" }
-
-## Dependency
+## Module info
 
 To use Multi Node Testing, you must add the following dependency in your project:
 
@@ -15,6 +13,8 @@ To use Multi Node Testing, you must add the following dependency in your project
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-multi-node-testkit" }
+
 ## Sample project
 
 You can look at the

akka-docs/src/main/paradox/persistence.md

@@ -6,9 +6,7 @@ project.description: Akka Persistence Classic, event sourcing with Akka, At-Leas
 @@include[includes.md](includes.md) { #actor-api }
 For the full documentation of this feature and for new projects see @ref:[persistence](typed/persistence.md).
 
-@@project-info{ projectId="akka-persistence" }
-
-## Dependency
+## Module info
 
 To use Akka Persistence, you must add the following dependency in your project:
 
@@ -21,6 +19,8 @@ To use Akka Persistence, you must add the following dependency in your project:
 You also have to select journal plugin and optionally snapshot store plugin, see 
 @ref:[Persistence Plugins](persistence-plugins.md).
 
+@@project-info{ projectId="akka-persistence" }
+
 ## Sample project
 
 You can look at the

akka-docs/src/main/paradox/remoting.md

@@ -20,9 +20,7 @@ such as [HTTP](https://doc.akka.io/docs/akka-http/current/),
 
 @@@
 
-@@project-info{ projectId="akka-remote" }
-
-## Dependency
+## Module info
 
 To use Akka Remoting, you must add the following dependency in your project:
 
@@ -32,6 +30,8 @@ To use Akka Remoting, you must add the following dependency in your project:
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-remote" }
+
 Classic remoting depends on Netty. This needs to be explicitly added as a dependency so that users
 not using classic remoting do not have to have Netty on the classpath:
 

akka-docs/src/main/paradox/stream/index.md

@@ -3,9 +3,7 @@ project.description: An intuitive and safe way to do asynchronous, non-blocking
 ---
 # Streams
 
-@@project-info{ projectId="akka-stream" }
-
-## Dependency
+## Module info
 
 To use Akka Streams, add the module to your project:
 
@@ -15,6 +13,8 @@ To use Akka Streams, add the module to your project:
   version="$akka.version$"
 }
 
+@@project-info{ projectId="akka-stream" }
+
 @@toc { depth=2 }
 
 @@@ index

akka-docs/src/main/paradox/testing.md

@@ -3,9 +3,7 @@
 @@include[includes.md](includes.md) { #actor-api }
 For the new API see @ref[testing](typed/testing.md).
 
-@@project-info{ projectId="akka-testkit" }
-
-## Dependency
+## Module info
 
 To use Akka Testkit, you must add the following dependency in your project:
 
@@ -16,6 +14,8 @@ To use Akka Testkit, you must add the following dependency in your project:
   scope="test"
 }
 
+@@project-info{ projectId="akka-testkit" }
+
 ## Introduction
 
 As with any piece of software, automated tests are a very important part of the

akka-docs/src/main/paradox/typed/actor-discovery.md

@@ -1,8 +1,6 @@
 # Actor discovery
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Actors](../actors.md#actorselection).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/actor-lifecycle.md

@@ -3,9 +3,7 @@ project.description: The Akka Actor lifecycle.
 ---
 # Actor lifecycle
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Actors](../actors.md).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/actors.md

@@ -3,19 +3,9 @@ project.description: The Actor model, managing internal state and changing behav
 ---
 # Introduction to Actors
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Actors](../actors.md).
-@@@
 
-@@@ note
-Both the Java and Scala DSLs of Akka modules bundled in the same JAR. For a smooth development experience,
-when using an IDE such as Eclipse or IntelliJ, you can disable the auto-importer from suggesting `javadsl`
-imports when working in Scala, or viceversa. See @ref:[IDE Tips](../additional/ide.md). 
-@@@
-
-@@project-info{ projectId="akka-actor-typed" }
-
-## Dependency
+## Module info
 
 To use Akka Actors, add the following dependency in your project:
 
@@ -25,6 +15,12 @@ To use Akka Actors, add the following dependency in your project:
   version=$akka.version$
 }
 
+Both the Java and Scala DSLs of Akka modules bundled in the same JAR. For a smooth development experience,
+when using an IDE such as Eclipse or IntelliJ, you can disable the auto-importer from suggesting `javadsl`
+imports when working in Scala, or viceversa. See @ref:[IDE Tips](../additional/ide.md). 
+
+@@project-info{ projectId="akka-actor-typed" }
+
 ## Akka Actors
 
 The [Actor Model](http://en.wikipedia.org/wiki/Actor_model) provides a higher level of abstraction for writing concurrent

akka-docs/src/main/paradox/typed/cluster-dc.md

@@ -1,8 +1,6 @@
 # Multi-DC Cluster
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Multi-DC Cluster](../cluster-dc.md)
-@@@
 
 This chapter describes how @ref[Akka Cluster](cluster.md) can be used across
 multiple data centers, availability zones or regions.

akka-docs/src/main/paradox/typed/cluster-sharding.md

@@ -3,13 +3,9 @@ project.description: Shard a clustered compute process across the network with l
 ---
 # Cluster Sharding
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Cluster Sharding](../cluster-sharding.md)
-@@@
 
-@@project-info{ projectId="akka-cluster-sharding-typed" }
-
-## Dependency
+## Module info
 
 To use Akka Cluster Sharding, you must add the following dependency in your project:
 
@@ -19,6 +15,8 @@ To use Akka Cluster Sharding, you must add the following dependency in your proj
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-sharding-typed" }
+
 ## Introduction
 
 Cluster sharding is useful when you need to distribute actors across several nodes in the cluster and want to

akka-docs/src/main/paradox/typed/cluster-singleton.md

@@ -1,12 +1,8 @@
 # Cluster Singleton
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Cluster Singleton](../cluster-singleton.md).
-@@@
 
-@@project-info{ projectId="akka-cluster-typed" }
-
-## Dependency
+## Module info
 
 To use Cluster Singleton, you must add the following dependency in your project:
 
@@ -16,6 +12,8 @@ To use Cluster Singleton, you must add the following dependency in your project:
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-typed" }
+
 ## Introduction
 
 For some use cases it is convenient and sometimes also mandatory to ensure that

akka-docs/src/main/paradox/typed/cluster.md

@@ -13,17 +13,13 @@ For specific documentation topics see:
 * @ref:[Rolling Updates](../additional/rolling-updates.md)
 * @ref:[Operating, Managing, Observability](../additional/operations.md)
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Cluster](../cluster-usage.md).
-@@@
 
 You have to enable @ref:[serialization](../serialization.md)  to send messages between ActorSystems (nodes) in the Cluster.
 @ref:[Serialization with Jackson](../serialization-jackson.md) is a good choice in many cases, and our
 recommendation if you don't have other preferences or constraints.
 
-@@project-info{ projectId="akka-cluster-typed" }
-
-## Dependency
+## Module info
 
 To use Akka Cluster add the following dependency in your project:
 
@@ -33,6 +29,8 @@ To use Akka Cluster add the following dependency in your project:
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-typed" }
+
 ## Cluster samples
 
 To see what using Akka Cluster looks like in practice, see the

akka-docs/src/main/paradox/typed/dispatchers.md

@@ -3,9 +3,7 @@ project.description: Akka dispatchers and how to choose the right ones.
 ---
 # Dispatchers
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Dispatchers](../dispatchers.md).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/distributed-data.md

@@ -3,13 +3,9 @@ project.description: Share data between nodes and perform updates without coordi
 ---
 # Distributed Data
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Distributed Data](../distributed-data.md).
-@@@
 
-@@project-info{ projectId="akka-cluster-typed" }
-
-## Dependency
+## Module info
 
 To use Akka Cluster Distributed Data, you must add the following dependency in your project:
 
@@ -19,6 +15,8 @@ To use Akka Cluster Distributed Data, you must add the following dependency in y
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-typed" }
+
 ## Introduction
 
 *Akka Distributed Data* is useful when you need to share data between nodes in an

akka-docs/src/main/paradox/typed/distributed-pub-sub.md

@@ -1,13 +1,9 @@
 # Distributed Publish Subscribe in Cluster
 
-@@@ note
 For the Akka Classic documentation of this feature see [Classic Distributed Publish Subscribe](../distributed-pub-sub.md).
 Classic Pub Sub can be used by leveraging the `.toClassic` adapters until @github[#26338](#26338).
-@@@
 
-@@project-info{ projectId="akka-cluster-typed" }
-
-## Dependency
+## Module info
 
 Until the new Distributed Publish Subscribe API, see @github[#26338](#26338), 
 you can use Classic Distributed Publish Subscribe 
@@ -27,6 +23,8 @@ Add the new Cluster API if you don't already have it in an existing Cluster appl
   version=$akka.version$
 }
 
+@@project-info{ projectId="akka-cluster-typed" }
+
 ## Sample project
 
 Until @github[#26338](#26338), [this simple example]($github.base_url$/akka-cluster-typed/src/test/scala/docs/akka/cluster/typed/DistributedPubSubExample.scala) shows how to use 

akka-docs/src/main/paradox/typed/fault-tolerance.md

@@ -1,8 +1,6 @@
 # Fault Tolerance
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Fault Tolerance](../fault-tolerance.md).
-@@@
 
 When an actor throws an unexpected exception, a failure, while processing a message or during initialization, the actor
 will by default be stopped.

akka-docs/src/main/paradox/typed/fsm.md

@@ -3,9 +3,7 @@ project.description: Finite State Machines (FSM) with Akka Actors.
 ---
 # Behaviors as finite state machines
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic FSM](../fsm.md).
-@@@
 
 An actor can be used to model a Finite State Machine (FSM).
 

akka-docs/src/main/paradox/typed/interaction-patterns.md

@@ -1,8 +1,6 @@
 # Interaction Patterns
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Actors](../actors.md).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/logging.md

@@ -3,9 +3,7 @@ project.description: Logging options with Akka.
 ---
 # Logging
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Logging](../logging.md).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/mailboxes.md

@@ -1,8 +1,6 @@
 # Mailboxes
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Mailboxes](../mailboxes.md).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/persistence-snapshot.md

@@ -3,9 +3,7 @@ project.description: Append only event logs, snapshots and recovery with Akka ev
 ---
 # Snapshotting
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Akka Persistence](../persistence.md).
-@@@
 
 ## Snapshots
 

akka-docs/src/main/paradox/typed/persistence.md

@@ -3,13 +3,9 @@ project.description: Event Sourcing with Akka Persistence enables actors to pers
 ---
 # Event Sourcing
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Akka Persistence](../persistence.md).
-@@@
 
-@@project-info{ projectId="akka-persistence-typed" }
-
-## Dependency
+## Module info
 
 To use Akka Persistence, add the module to your project:
 
@@ -22,6 +18,8 @@ To use Akka Persistence, add the module to your project:
 You also have to select journal plugin and optionally snapshot store plugin, see 
 @ref:[Persistence Plugins](../persistence-plugins.md).
 
+@@project-info{ projectId="akka-persistence-typed" }
+
 ## Introduction
 
 Akka Persistence enables stateful actors to persist their state so that it can be recovered when an actor

akka-docs/src/main/paradox/typed/routers.md

@@ -1,8 +1,6 @@
 # Routers
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Routing](../routing.md).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/stash.md

@@ -1,8 +1,6 @@
 # Stash
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Actors](../actors.md#stash).
-@@@
 
 ## Dependency
 

akka-docs/src/main/paradox/typed/testing-async.md

@@ -1,8 +1,6 @@
 ## Asynchronous testing
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Testing](../testing.md).
-@@@
 
 Asynchronous testing uses a real @apidoc[akka.actor.typed.ActorSystem] that allows you to test your Actors in a more realistic environment.
 

akka-docs/src/main/paradox/typed/testing-sync.md

@@ -1,8 +1,6 @@
 ## Synchronous behavior testing
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Testing](../testing.md).
-@@@
 
 The `BehaviorTestKit` provides a very nice way of unit testing a `Behavior` in a deterministic way, but it has
 some limitations to be aware of.

akka-docs/src/main/paradox/typed/testing.md

@@ -1,12 +1,8 @@
 # Testing
 
-@@@ note
 For the Akka Classic documentation of this feature see @ref:[Classic Testing](../testing.md).
-@@@
 
-@@project-info{ projectId="akka-actor-testkit-typed" }
-
-## Dependency
+## Module info
 
 To use Actor TestKit add the module to your project:
 
@@ -30,6 +26,8 @@ We recommend using Akka TestKit with ScalaTest:
 
 @@@
 
+@@project-info{ projectId="akka-actor-testkit-typed" }
+
 ## Introduction
 
 Testing can either be done asynchronously using a real @apidoc[akka.actor.typed.ActorSystem] or synchronously on the testing thread using the

project/plugins.sbt

@@ -20,7 +20,7 @@ addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.3.7")
 addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.4.1")
 addSbtPlugin("io.spray" % "sbt-boilerplate" % "0.6.1")
 addSbtPlugin("com.timushev.sbt" % "sbt-updates" % "0.4.2")
-addSbtPlugin("com.lightbend.akka" % "sbt-paradox-akka" % "0.25")
+addSbtPlugin("com.lightbend.akka" % "sbt-paradox-akka" % "0.26")
 addSbtPlugin("com.lightbend" % "sbt-whitesource" % "0.1.17")
 addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.2.0") // for maintenance of copyright file header
 addSbtPlugin("com.hpe.sbt" % "sbt-pull-request-validator" % "1.0.0")