New features in v3.3.0:
- audit.go: Security audit logging with JSON/text format, log rotation
- validation.go: Magic bytes content validation with wildcard patterns
- quota.go: Per-user storage quotas with Redis/memory tracking
- admin.go: Admin API for stats, file management, user quotas, bans
Integration:
- Updated main.go with feature initialization and handler integration
- Added audit logging for auth success/failure, uploads, downloads
- Added quota checking before upload, tracking after successful upload
- Added content validation with magic bytes detection
Config:
- New template: config-enhanced-features.toml with all new options
- Updated README.md with feature documentation
