Added a new crawl_local_files() function that mimics the interface of crawl_github_files()
Modified the FetchRepo node to handle both cases
Project name is now derived from either:
The repository name (from GitHub URL)
The directory name (from local path)
Or can be manually specified with -n/--name
The tool will use the same file pattern matching and size limits for both sources. All other functionality (generating abstractions, relationships, chapters, etc.) remains unchanged since they work with the same file list format.