feat(ui): Add distinct color for Remux format

- Added ColorRemux (#06B6D4 cyan-glow) to semantic color system
- Remux formats now display with distinct color from regular MKV
- buildFormatBadge checks for "Remux" in label and applies special color
- Differentiates lossless remux from transcoded formats

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

internal/ui/colors.go

@@ -12,6 +12,7 @@ import (
 // Container / Format Colors (File Wrapper)
 var (
 	ColorMKV    = utils.MustHex("#00B3B3") // Teal / Cyan - Neutral, modern, flexible container
+	ColorRemux  = utils.MustHex("#06B6D4") // Cyan-Glow - Lossless remux (no re-encoding)
 	ColorMP4    = utils.MustHex("#3B82F6") // Blue - Widely recognised, consumer-friendly
 	ColorMOV    = utils.MustHex("#6366F1") // Indigo - Pro / Apple / QuickTime lineage
 	ColorAVI    = utils.MustHex("#64748B") // Grey-Blue - Legacy container

main.go

@@ -6238,8 +6238,13 @@ func buildFormatBadge(formatLabel string) fyne.CanvasObject {
 
 	containerName := strings.ToLower(strings.TrimSpace(parts[0]))
 
-	// Get container color
-	badgeColor := ui.GetContainerColor(containerName)
+	// Get container color - use special color for Remux
+	var badgeColor color.Color
+	if strings.Contains(strings.ToLower(formatLabel), "remux") {
+		badgeColor = ui.ColorRemux
+	} else {
+		badgeColor = ui.GetContainerColor(containerName)
+	}
 	
 	// Create colored background
 	bg := canvas.NewRectangle(badgeColor)