feat: add Rslint as optional tool

[chenjiahan]

Marked as experimental: https://github.com/web-infra-dev/rslint

[chatgpt-codex-connector]

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[Copilot]

Pull request overview

Adds Rslint as an (experimental) optional/built-in tool that can be selected via --tools and scaffolded into generated projects, with corresponding template files and test coverage.

Changes:

• Expose rslint in the built-in tools list and interactive tools prompt.
• Add a new template-rslint/ tool template (config, package.json, AGENTS docs).
• Update/extend CLI + help tests to validate rslint help output and scaffolding behavior.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/index.ts	Adds rslint to built-in tools and exposes it in the tools prompt.
template-rslint/rslint.config.ts	Provides the scaffolded Rslint configuration file.
template-rslint/package.json	Adds @rslint/core + lint script for scaffolded projects.
template-rslint/AGENTS.md	Documents how to run the Rslint tool in generated projects.
test/cli.test.ts	Adds a test verifying Rslint scaffolding output + package.json merge.
test/help.test.ts	Updates help output expectations to include the new built-in tool.
package.json	Adjusts nano-staged commands formatting (split into separate steps).
.vscode/settings.json	Adds rslint to cSpell dictionary.

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