UPDATE: Add ldiff

pkg/firefly/loader.go

@@ -0,0 +1,66 @@
+package firefly
+
+import (
+	"bufio"
+	"firefly-launcher/pkg/firefly/pb"
+	"io"
+	"os"
+
+	"github.com/klauspost/compress/zstd"
+	"google.golang.org/protobuf/proto"
+)
+
+func LoadChunkProto(path string) (*pb.ChunkProto, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	reader := bufio.NewReader(file)
+	decoder, err := zstd.NewReader(reader)
+	if err != nil {
+		return nil, err
+	}
+	defer decoder.Close()
+
+	data, err := io.ReadAll(decoder)
+	if err != nil {
+		return nil, err
+	}
+
+	var chunk pb.ChunkProto
+	if err := proto.Unmarshal(data, &chunk); err != nil {
+		return nil, err
+	}
+
+	return &chunk, nil
+}
+
+// Load ManifestProto từ file Zstd + Protobuf
+func LoadManifestProto(path string) (*pb.ManifestProto, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	reader := bufio.NewReader(file)
+	decoder, err := zstd.NewReader(reader)
+	if err != nil {
+		return nil, err
+	}
+	defer decoder.Close()
+
+	data, err := io.ReadAll(decoder)
+	if err != nil {
+		return nil, err
+	}
+
+	var manifest pb.ManifestProto
+	if err := proto.Unmarshal(data, &manifest); err != nil {
+		return nil, err
+	}
+
+	return &manifest, nil
+}