implement progress bar

app/misc.go

@@ -1,6 +1,19 @@
 package main
 
+import (
+	"fmt"
+	"strings"
+)
+
 // Helper function to create string pointer
 func ptr(s string) *string {
 	return &s
 }
+
+const progressBarLength = 20
+
+func renderProgressBar(percent float64) string {
+	filled := int(float64(progressBarLength) * percent / 100)
+	bar := strings.Repeat("█", filled) + strings.Repeat(" ", progressBarLength-filled)
+	return fmt.Sprintf("[%s] %.0f%%", bar, percent)
+}