fix: standardize error messages to lowercase for consistency

Author: shyim

internal/system/node.go

@@ -13,7 +13,7 @@ func GetInstalledNodeVersion() (string, error) {
 	// Check if Node.js is installed
 	nodePath, err := exec.LookPath("node")
 	if err != nil {
-		return "", fmt.Errorf("Node.js is not installed: %w", err)
+		return "", fmt.Errorf("node.js is not installed: %w", err)
 	}
 
 	// Get the Node.js version

internal/verifier/embed.go

@@ -36,13 +36,13 @@ func SetupTools(ctx context.Context, currentVersion string) error {
 	if ok, err := system.IsPHPVersionAtLeast("8.2.0"); err != nil {
 		return fmt.Errorf("failed to check installed PHP version: %w", err)
 	} else if !ok {
-		return fmt.Errorf("PHP version must be at least 8.2.0 to use this. Update your PHP version or use the shopware-cli docker image")
+		return fmt.Errorf("php version must be at least 8.2.0 to use this. Update your PHP version or use the shopware-cli docker image")
 	}
 
 	if ok, err := system.IsNodeVersionAtLeast("22.0.0"); err != nil {
 		return fmt.Errorf("failed to check installed Node.js version: %w", err)
 	} else if !ok {
-		return fmt.Errorf("Node.js version must be at least 22.0.0 to use this. Update your Node.js version or use the shopware-cli docker image")
+		return fmt.Errorf("node.js version must be at least 22.0.0 to use this. Update your Node.js version or use the shopware-cli docker image")
 	}
 
 	logging.FromContext(ctx).Debugf("Using tool directory: %s", toolsDir)