Add smart session matching and GitHub Actions release workflow

- Implement intelligent path matching for export across different machines
- Match sessions by directory basename when exact path doesn't match
- Validate matches using git remote URL for same repository
- Add GitHub Actions workflow for automated multi-platform releases

This fixes the issue where sessions weren't recognized on different laptops
due to different absolute paths, while maintaining backward compatibility
with exact path matching.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>