chunking

type Configuration struct {
	Algorithm  string `json:"algorithm"`   // Content-defined chunking algorithm (e.g., "rolling-hash", "fastcdc")
	MinSize    uint32 `json:"min_size"`    // Minimum chunk size
	NormalSize uint32 `json:"normal_size"` // Expected (average) chunk size
	MaxSize    uint32 `json:"max_size"`    // Maximum chunk size
}