test(l1): add reorg testing framework

[MegaRedHand]

Motivation

Hive tests are good for wide coverage, but having our own suite will let us iterate faster, adding our own regression tests or even fuzzing.

Description

This PR adds a new crate under tooling/reorgs with a reorgs testing framework. The README of the crate includes instructions on how to run:

First, compile the ethrex binary if you haven't already:

cargo build --workspace --bin ethrex

Then, run the reorg tests using:

cargo run

You can run a custom binary by specifying the path:

cargo run -- /path/to/your/binary

The package already includes a simple reorg test with two chains and a node going back and forth between the two, and another test similar to the reorg tests in Hive's "ethereum/engine" simulation, which does a reorg multiple blocks deep without sending all of the side-chain blocks to the node under test.

[github-actions]

Lines of code report

Total lines added: 507
Total lines removed: 0
Total lines changed: 507

Detailed view

+----------------------------------------+-------+------+
| File                                   | Lines | Diff |
+----------------------------------------+-------+------+
| ethrex/tooling/reorgs/src/main.rs      | 148   | +148 |
+----------------------------------------+-------+------+
| ethrex/tooling/reorgs/src/simulator.rs | 359   | +359 |
+----------------------------------------+-------+------+

To fix the problem, we should explicitly set a permissions block in the workflow to restrict the GITHUB_TOKEN permissions to the minimum needed. This can be set either at the workflow root or for individual jobs. As the workflow doesn't appear to require any write permissions (e.g., none of the steps push code, modify issues, or interact with pull requests), the safest minimal starting point is contents: read. This should be added at the top level of the workflow YAML file (immediately after the name and on sections, before jobs:), which will apply to all jobs that do not specify their own permissions block.

No additional imports, methods, or definitions are needed for this YAML change.

[Copilot]

Pull Request Overview

This PR introduces a comprehensive reorg testing framework for the L1 chain, providing infrastructure to test chain reorganization scenarios. The implementation includes a simulator that can spawn multiple nodes, orchestrate blockchain operations, and verify reorg behavior.

Key changes:

• Adds a complete reorg testing framework with node simulation capabilities
• Implements chain manipulation tools for testing fork scenarios
• Integrates reorg tests into the CI pipeline for automated testing

Reviewed Changes

Copilot reviewed 9 out of 11 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tooling/reorgs/src/simulator.rs	Core simulator implementation with node management and chain utilities
tooling/reorgs/src/main.rs	Main test runner with specific reorg test scenarios
tooling/reorgs/README.md	Documentation for running the reorg tests
tooling/reorgs/Cargo.toml	Package configuration and dependencies
crates/networking/rpc/types/payload.rs	Adds PartialEq and Eq traits to PayloadValidationStatus
crates/networking/rpc/types/fork_choice.rs	Adds Clone and Copy traits to ForkChoiceState
cmd/ethrex/cli.rs	Adds Clone trait to Options struct
Cargo.toml	Includes new reorgs package in workspace
.github/workflows/pr-main_l1.yaml	Adds reorg tests to CI pipeline

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}