- Add _get_file_content() helper method to detect and follow symlinks
- Update _extract_readme() to use new helper
- Update _extract_changelog() to use new helper
- Add 7 comprehensive tests for symlink handling
- All 29 GitHub scraper tests passing
Fixes#225
When README.md or CHANGELOG.md are symlinks (like in vercel/ai repo),
PyGithub returns ContentFile with type='symlink' and encoding=None.
Direct access to decoded_content throws AssertionError.
Solution: Detect symlink type, follow target path, then decode actual file.
Handles edge cases: broken symlinks, missing targets, encoding errors.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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