Update ListPermEntries to return entry field instead of ip and
sort results by created_at. Update the handler in auth.go to call
ListPermEntries instead of ListTempEntries for the whitelist endpoint.
- Add GET /api/whitelist/perm/list to list permanent whitelisted entries
- Implement permWhitelistListHandler with API key verification
- Rename permanent_whitelist table to perm_whitelist for consistency
- Update default DB path from ./data to /data
- Comment out build job in CI/CD workflow
- Migrate IP-based temporary whitelisting from file to SQLite storage
- Add REST API endpoints for managing temporary and permanent whitelists
- Create `.env.example` with required environment variables
- Document API endpoints in README.md and docs/api.md
- Add new dependency `modernc.org/sqlite` for SQLite support
- Update deployment and security documentation
