This PR adds a spellcheck job to the lint workflow using the `typos` tool, following the same approach as [Reth](paradigmxyz/reth#17501) and [Kona](op-rs/kona#2605). ## Changes - **Added `typos` job to `.github/workflows/lint.yml`**: Uses `crate-ci/typos@v1` action to check spelling across all files in PRs - **Created `typos.toml` configuration**: Includes blockchain/Ethereum-specific terms and exclusions for: - Generated files (minified JS, build artifacts) - Hex strings and addresses common in blockchain projects - Technical terms like `asterisc`, `optimism`, `alloy`, `superchain`, etc. - **Fixed existing typos** found during implementation: - `existant` → `existent` in CSS - `rountrip` → `roundtrip` in changelog - `datas` → `data` in changelog ## Why typos? The `typos` tool is written in Rust and provides faster execution than `codespell` while offering better configuration options through regex patterns and word lists. It's specifically well-suited for Rust projects with blockchain terminology. ## Testing The configuration has been tested to ensure: - ✅ Catches actual spelling errors - ✅ Allows legitimate technical terms - ✅ Excludes generated/minified files - ✅ Integrates cleanly with existing lint workflow Fixes #584.  --- ✨ Let Copilot coding agent [set things up for you](https://github.com/alloy-rs/op-alloy/issues/new?title=✨Set+up+Copilot+instructions&body=Configure%20instructions%20for%20this%20repository%20as%20documented%20in%20%5BBest%20practices%20for%20Copilot%20coding%20agent%20in%20your%20repository%5D%28https://gh.io/copilot-coding-agent-tips%29%0A%0A%3COnboard%20this%20repo%3E&assignees=copilot) — coding agent works faster and does higher quality work when set up for your repo. --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: emhane <58548332+emhane@users.noreply.github.com>

Add spellcheck workflow #2605

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