feat: add comprehensive diagnostic logging subsystem and UI controls

main.go

@@ -11,10 +11,11 @@ import (
 	languageService "g-launcher/internal/language-service"
 
 	"g-launcher/pkg/constant"
+	"g-launcher/pkg/logger"
 	"fmt"
-	"log"
 	"os"
 	"path/filepath"
+	"runtime"
 
 	"github.com/wailsapp/wails/v3/pkg/application"
 	"github.com/wailsapp/wails/v3/pkg/events"
@@ -45,12 +46,23 @@ func extractFile(embedPath, outPath string) error {
 }
 
 func main() {
+	_, err := logger.Init()
+	if err != nil {
+		fmt.Printf("failed to initialize logger: %v\n", err)
+	}
+
+	logger.Info("G-Launcher starting up (Version: %s, OS: %s, Arch: %s, Go: %s)", constant.CurrentLauncherVersion, runtime.GOOS, runtime.GOARCH, runtime.Version())
+	cwd, _ := os.Getwd()
+	logger.Info("Current Working Directory: %s", cwd)
+
 	// Extract required files
 	for outPath, embedPath := range constant.RequiredFiles {
 		if !fileExists(outPath.String()) {
 			err := extractFile(embedPath, outPath.String())
 			if err != nil {
-				fmt.Println("can't copy file:", err)
+				logger.Error("Can't extract file %s: %v", outPath, err)
+			} else {
+				logger.Info("Extracted embedded asset: %s", outPath)
 			}
 		}
 	}
@@ -62,8 +74,8 @@ func main() {
 		base := filepath.Base(exePath)
 		oldPath := filepath.Join(dir, "."+base+".old")
 
-		fmt.Println("Old executable path:", oldPath)
-		os.Remove(oldPath)
+		logger.Info("Checking for old executable: %s", oldPath)
+		_ = os.Remove(oldPath)
 	}
 	// Create application
 	app := application.New(application.Options{
@@ -124,6 +136,6 @@ func main() {
 
 	err = app.Run()
 	if err != nil {
-		log.Fatal(err)
+		logger.Error("Application fatal error: %v", err)
 	}
 }