Legit-code: Support other AI assistants (Cursor, Windsurf, etc.)

[martin-lysk]

Feature Request: Multi-Assistant Support

Summary

legit-code currently requires the Anthropic Claude CLI. This issue tracks adding support for other AI-powered development assistants.

Current Behavior

When the Claude CLI is not installed, users receive:

❌ Error: Claude CLI not found.

legit-code currently requires the Claude CLI to be installed.

Please install Claude first:
   https://claude.ai/download