SYMBOL INDEX (5 symbols across 1 files) FILE: lint/frontmatter.py function extract_yaml_frontmatter (line 10) | def extract_yaml_frontmatter(file_path): function lint_yaml (line 34) | def lint_yaml(yaml_content): function validate_yaml_keys (line 42) | def validate_yaml_keys(yaml_content, allowed_keys): function process_files (line 72) | def process_files(path): function main (line 105) | def main(path_input):