Replace individual seed parameters with line_index system to provide more predictable wildcard selection. This aligns with TextFileLoader's behavior and allows both random selection (when line_index=-1) and specific line selection. The global_seed parameter is renamed to seed for clarity.
Introduce new node supporting template mode with {filename.txt} syntax and slots mode with individual seed control. Includes real-time preview and error handling. Update version to 1.5.0 and add example wildcard files for expressions, poses, clothing, and scenarios.
Update example workflows to demonstrate new functionality and improve README with node documentation.
gmorks