Replace GORM with bbolt for database operations

Migrated from GORM to bbolt for lightweight key-value storage, better aligning with project requirements. Updated repository methods to utilize bbolt's native APIs and removed dependencies associated with GORM.

main.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fyne.io/fyne/v2"
 	"git.kor-elf.net/kor-elf/gui-for-ffmpeg/convertor"
+	dberror "git.kor-elf.net/kor-elf/gui-for-ffmpeg/db"
 	error2 "git.kor-elf.net/kor-elf/gui-for-ffmpeg/error"
 	"git.kor-elf.net/kor-elf/gui-for-ffmpeg/handler"
 	"git.kor-elf.net/kor-elf/gui-for-ffmpeg/kernel"
@@ -12,10 +13,10 @@ import (
 	"git.kor-elf.net/kor-elf/gui-for-ffmpeg/migration"
 	"git.kor-elf.net/kor-elf/gui-for-ffmpeg/setting"
 	_ "github.com/mattn/go-sqlite3"
+	"go.etcd.io/bbolt"
 	"golang.org/x/text/language"
-	"gorm.io/driver/sqlite"
-	"gorm.io/gorm"
 	"os"
+	"time"
 )
 
 var application kernel.AppContract
@@ -50,20 +51,20 @@ func init() {
 
 func main() {
 	errorView := error2.NewView(application)
-	if canCreateFile("data/database") != true {
+	if canCreateFile("data/database.db") != true {
 		errorView.PanicErrorWriteDirectoryData()
 		application.GetWindow().ShowAndRun()
 		return
 	}
 
-	db, err := gorm.Open(sqlite.Open("data/database"), &gorm.Config{})
+	db, err := bbolt.Open("data/database.db", 0600, &bbolt.Options{Timeout: 3 * time.Second})
 	if err != nil {
 		errorView.PanicError(err)
 		application.GetWindow().ShowAndRun()
 		return
 	}
 
-	defer appCloseWithDb(db)
+	defer db.Close()
 
 	err = migration.Run(db)
 	if err != nil {
@@ -75,7 +76,7 @@ func main() {
 	settingRepository := setting.NewRepository(db)
 	convertorRepository := convertor.NewRepository(settingRepository)
 	pathFFmpeg, err := convertorRepository.GetPathFfmpeg()
-	if err != nil && errors.Is(err, gorm.ErrRecordNotFound) == false {
+	if err != nil && errors.Is(err, dberror.ErrRecordNotFound) == false {
 		errorView.PanicError(err)
 		application.GetWindow().ShowAndRun()
 		return
@@ -83,7 +84,7 @@ func main() {
 	ffPathUtilities.FFmpeg = pathFFmpeg
 
 	pathFFprobe, err := convertorRepository.GetPathFfprobe()
-	if err != nil && errors.Is(err, gorm.ErrRecordNotFound) == false {
+	if err != nil && errors.Is(err, dberror.ErrRecordNotFound) == false {
 		errorView.PanicError(err)
 		application.GetWindow().ShowAndRun()
 		return
@@ -108,13 +109,6 @@ func main() {
 	application.GetWindow().ShowAndRun()
 }
 
-func appCloseWithDb(db *gorm.DB) {
-	sqlDB, err := db.DB()
-	if err == nil {
-		_ = sqlDB.Close()
-	}
-}
-
 func canCreateFile(path string) bool {
 	file, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0666)
 	if err != nil {