Add nginx-like autoindex functionality with three output formats:
- HTML: styled directory listing with sortable columns
- JSON: structured API-friendly output
- XML: machine-readable format
Configuration options:
- auto_index: enable/disable directory listing
- auto_index_format: output format (html/json/xml)
- auto_index_localtime: use local time instead of GMT
- auto_index_exact_size: show exact bytes vs human-readable
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>