- Add `select_all` option to recursively add directory contents
- Implement `select_all_files_and_dirs` for file traversal
- Rework prompt building with file tree and content formatters
- Improve `get_file_extension` to handle dotfiles and special files
- Update prompt template to use new structured data model
- Introduce sessions and workspaces for managing context
- Allow adding directories and selecting files
- Generate structured prompts with file maps and content
- Add example script and a prompt template
- Define core data models like `HeropromptWorkspace`