convert StateMachine to ZPure

[keisar]

No description provided.

[Copilot]

Pull Request Overview

This PR converts the StateMachine trait from using zio.prelude.State to zio.prelude.fx.ZPure, adding a new type parameter W for write accumulation. The change updates the trait signature and propagates the type parameter throughout the codebase.

• Adds a W type parameter to StateMachine trait and all implementations
• Changes the return type of apply method from State[S, command.Response] to ZPure[W, S, S, Any, Nothing, command.Response]
• Updates all type signatures in test files and the main Raft implementation to include the new W parameter

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
raft/src/main/scala/zio/raft/StateMachine.scala	Updates trait definition to add W type parameter and changes return type to ZPure
raft/src/main/scala/zio/raft/Raft.scala	Adds W type parameter to Raft class and factory methods
raft/src/test/scala/zio/raft/TestStateMachine.scala	Updates test implementation to use ZPure with Any for W parameter
raft/src/test/scala/zio/raft/RaftSpec.scala	Updates all test helper method signatures to include W type parameter
raft/src/test/scala/zio/raft/RaftIntegrationSpec.scala	Updates integration test method signatures with new type parameter
kvstore/src/main/scala/zio/kvstore/App.scala	Updates KV store implementation to use ZPure with Any for W parameter

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[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated no new comments.

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