Add issue CLI command to open GitHub new-issue page

[Copilot]

This PR adds a first-class issue command so users can open the repository’s GitHub issue creation page directly from LazyShell. It addresses the missing workflow for quickly reporting problems without manually navigating to GitHub.

• CLI: new issue subcommand

  • Adds lazyshell issue to the command registry.
  • Opens https://github.com/bernoussama/lazyshell/issues/new in the default browser.

• Platform-aware browser launch

  • Uses OS-specific commands via execFile:
    • macOS: open
    • Windows: cmd /c start
    • Linux: xdg-open
  • Avoids shell interpolation for safer process invocation.

• User-facing behavior

  • Prints a clear success message when launch is triggered.
  • Surfaces a contextual error message if the browser command fails.

• Docs update

  • Adds lazyshell issue to README command examples.

program
  .command('issue')
  .description('Open browser to create a new GitHub issue')
  .action(async () => {
    await openIssuePage();
  });

[Copilot]

Pull request overview

This PR adds a new lazyshell issue CLI subcommand that opens the project’s GitHub “new issue” page in the user’s default browser, with a small README update to document the command.

Changes:

• Added issue subcommand to the Commander CLI registry in src/index.ts.
• Implemented OS-specific browser launching via execFile (macOS open, Windows cmd /c start, Linux xdg-open).
• Documented the new command in README.md.

Reviewed changes

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

File	Description
src/index.ts	Adds openIssuePage() and registers the new issue CLI subcommand.
README.md	Documents lazyshell issue in the command examples section.

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[bernoussama]

Nightly review — lazyshell#147 (Add issue CLI command)

Verdict: LGTM with a nit. execFile + platform switch is the right way (no shell interpolation; URL is a constant so the cmd /c start "" empty-title quirk is handled correctly).

Nit: on headless boxes / WSL without wslu, xdg-open doesn't exist and the command hard-fails with exit 1. Print the URL as a fallback so the user can still copy it:

console.log(chalk.blue('Open manually:'), issueUrl);