refactor(l2): use Url instead of String in EthClient

[ManuelBilbao]

Motivation

Url is the correct type for the EthClient

Description

Replace all String uses with Url when used for EthClient

[Copilot]

Pull Request Overview

This PR refactors the EthClient to use Url type instead of String for RPC URLs, improving type safety and making the API more explicit about expecting valid URLs.

Key Changes:

• Updated EthClient::new() and related constructors to accept Url instead of &str/String
• Removed internal URL parsing logic from EthClient::new_with_config() since URLs are now pre-validated
• Updated all call sites across the codebase to parse URLs before passing to EthClient

Reviewed Changes

Copilot reviewed 21 out of 22 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
crates/networking/rpc/clients/eth/mod.rs	Modified EthClient constructors to accept Url type and removed internal URL parsing
crates/l2/sequencer/configs.rs	Changed EthConfig.rpc_url field type from Vec<String> to Vec<Url>
cmd/ethrex/l2/options.rs	Updated EthOptions.rpc_url to Vec<Url> and modified default initialization
cmd/ethrex/l2/deployer.rs	Changed DeployerOptions.rpc_url to Url type
cmd/ethrex/l2/initializers.rs	Added URL parsing when creating L2 RPC URL from address and port
crates/l2/sequencer/*.rs	Updated multiple sequencer components to work with Url type
crates/l2/tests/*.rs	Added URL parsing for test client initialization
tooling//src/.rs	Updated tooling code to parse URLs before creating EthClient
*/Cargo.toml	Added url workspace dependency where needed

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The error message 'Error parsing RPC URL' should include the actual URL that failed to parse for easier debugging. Consider using unwrap_or_else to include the formatted URL in the panic message.

Suggested change

	Url::parse(&format!("http://{}:{}", opts.http_addr, opts.http_port))
	.expect("Error parsing RPC URL")
	let url_str = format!("http://{}:{}", opts.http_addr, opts.http_port);
	Url::parse(&url_str).unwrap_or_else(|e| panic!("Error parsing RPC URL '{}': {}", url_str, e))

[github-actions]

Lines of code report

Total lines added: 27
Total lines removed: 7
Total lines changed: 34

Detailed view

+-------------------------------------------------+-------+------+
| File                                            | Lines | Diff |
+-------------------------------------------------+-------+------+
| ethrex/cmd/ethrex/l2/deployer.rs                | 1080  | +2   |
+-------------------------------------------------+-------+------+
| ethrex/cmd/ethrex/l2/initializers.rs            | 368   | +2   |
+-------------------------------------------------+-------+------+
| ethrex/cmd/ethrex/l2/options.rs                 | 1028  | +2   |
+-------------------------------------------------+-------+------+
| ethrex/crates/l2/monitor/app.rs                 | 496   | +10  |
+-------------------------------------------------+-------+------+
| ethrex/crates/l2/sequencer/l1_watcher.rs        | 422   | +4   |
+-------------------------------------------------+-------+------+
| ethrex/crates/l2/sequencer/metrics.rs           | 165   | +1   |
+-------------------------------------------------+-------+------+
| ethrex/crates/l2/sequencer/mod.rs               | 235   | +2   |
+-------------------------------------------------+-------+------+
| ethrex/crates/l2/sequencer/utils.rs             | 186   | +1   |
+-------------------------------------------------+-------+------+
| ethrex/crates/networking/rpc/clients/eth/mod.rs | 608   | -7   |
+-------------------------------------------------+-------+------+
| ethrex/tooling/load_test/src/main.rs            | 358   | +1   |
+-------------------------------------------------+-------+------+
| ethrex/tooling/reorgs/src/simulator.rs          | 470   | +2   |
+-------------------------------------------------+-------+------+