GithubFetcher

The project is written in Rust, which offers strong memory safety. Input parameters are deserialized using `serde` and `schemars`, helping to prevent malformed input from causing issues. GitHub API calls are made via `reqwest`, and file content decoding uses `base64`, both standard and generally safe libraries. Secrets (GitHub token) are handled via environment variables or CLI arguments, not hardcoded. The `--api-base` flag allows overriding the GitHub API endpoint, which could be a risk if pointed to a malicious server, but this is a configuration choice for enterprise or testing purposes, not a vulnerability in the default setup. No 'eval' or similar dangerous dynamic code execution patterns were found.