- Add stegasoo.conf.example with all configurable options
- setup.sh: Add -h/--help, load config from /etc and ~/.config
- setup.sh: Support STEGASOO_BRANCH for non-main branches
- sanitize-for-image.sh: Add -h/--help with usage examples
Config files are loaded in order:
1. /etc/stegasoo.conf (system-wide)
2. ~/.config/stegasoo/stegasoo.conf (per-user)
3. Environment variables (highest priority)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>