feat: Add automatic PR creation after push

[Tsopic]

Summary

This PR adds automatic pull request creation functionality to Claude Squad when pushing changes with the 'p' command. If the environment supports it (GitHub repository with authenticated GitHub CLI), a PR to the main branch will be created automatically after a successful push.

Changes

• Added createPullRequestIfPossible() method to handle PR creation logic
• Integrated PR creation into the existing PushChanges() workflow
• Implemented smart detection to skip PR creation when:
  • Already on main/master branch
  • Not in a GitHub repository
  • GitHub CLI is not available or authenticated
  • PR already exists for the branch

Key Features

• Automatic PR Creation: After pushing with 'p', a PR is automatically created if possible
• Graceful Degradation: Works seamlessly in non-GitHub environments by skipping PR creation
• Duplicate Prevention: Detects existing PRs and avoids creating duplicates
• Clear Logging: Provides informative log messages for successful creation and skip scenarios
• Zero Configuration: Works out-of-the-box with existing GitHub CLI authentication

Testing

• All existing tests pass
• Manual testing recommended following the test plan in the implementation

This enhancement streamlines the workflow for Claude Squad users by reducing the manual steps needed to create pull requests after pushing changes.

🤖 Generated with Claude Code

Co-Authored-By: Claude [email protected]

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[Tsopic]

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