Clone Integration - Clone repositories directly from TUI/CLI

[shreeshjha]

Feature Description

Implement repository cloning functionality directly from RepoScout, completing the workflow from search to local development.

Priority

High - Completes the core user workflow

Effort Estimate

Easy - ~2-3 hours

User Stories

As a developer, I want to:

• Clone a repository with a single keypress in TUI
• Clone from CLI without switching to my shell
• Choose between SSH and HTTPS clone URLs
• Configure a default clone directory
• See clone progress in real-time
• Optionally open the cloned repo in my editor

Acceptance Criteria

CLI Commands

• reposcout clone <repo> - Clone repository to current/default directory
• reposcout clone <repo> --path <dir> - Clone to specific directory
• reposcout clone <repo> --ssh - Use SSH URL instead of HTTPS
• reposcout clone <repo> --open - Open in default editor after clone
• Show progress indicator during clone operation
• Handle errors gracefully (network, permissions, existing directory)

TUI Integration

• Press `c` to clone selected repository
• Show modal dialog with clone options:
  • Destination directory (with default)
  • Protocol selection (SSH/HTTPS)
  • Open in editor checkbox
• Show progress indicator during clone
• Display success/error message
• Return to results list after completion

Configuration Support

• `clone.default_directory` - Default clone location (e.g., ~/Projects)
• `clone.protocol` - Default protocol (ssh/https)
• `clone.editor_command` - Command to open editor (e.g., `code`, `nvim`)
• Config via `~/.config/reposcout/config.toml`

Edge Cases

• Directory already exists - prompt or error
• Network failure - retry logic
• Insufficient disk space - clear error message
• SSH key not configured - fallback to HTTPS or clear error
• Private repositories - handle authentication

Testing Checklist

• Clone public GitHub repository (HTTPS)
• Clone public GitLab repository (HTTPS)
• Clone with SSH protocol
• Clone to custom directory
• Clone and open in editor
• Handle existing directory error
• Cancel clone operation mid-transfer
• Clone with network interruption

UI/UX Considerations

• Keep clone operation async/non-blocking in TUI
• Show estimated time remaining if possible
• Provide clear feedback on success/failure
• Allow user to continue browsing while cloning